William F. Waite
Junbong Jang
Timothy S. Collett
Pushpendra Kumar
2018
Physical Properties of Sediment Collected during India's National Gas Hydrate Program NGHP-02 Expedition in the Krishna-Godavari Basin Offshore Eastern India, 2015
1.0
Comma-separated values (CSV)
data release
DOI:10.5066/P97RL4X4
Reston, VA
U.S. Geological Survey
Suggested citation: Waite, W.F., Jang, J., Collett, T.S., and Kumar, P., 2018, Physical properties of sediment collected during India's National Gas Hydrate Program NGHP-02 expedition in the Krishna-Godavari Basin offshore eastern India, 2015: U.S. Geological Survey data release, https://doi.org/10.5066/P97RL4X4.
This dataset supports the following publications:
Jang, J., Waite, W.F., Stern, L.A., Collett, T.S., and Kumar, P., 2018. Physical property characteristics of gas hydrate-bearing reservoir and associated seal sediments collected during NGHP-02 in the Krishna-Godavari Basin, in the offshore of India: Marine and Petroleum Geology, https://doi.org/10.1016/j.marpetgeo.2018.09.027.
Waite, W.F., Jang, J., Collett, T.S., and Kumar, P., 2018, Downhole physical property-based description of a gas hydrate petroleum system in NGHP-02 Area C — A channel, levee, fan complex in the Krishna-Godavari Basin offshore eastern India: Marine and Petroleum Geology, https://doi.org/10.1016/j.marpetgeo.2018.05.021.
https://doi.org/10.5066/P97RL4X4
https://www.sciencebase.gov/catalog/item/5b0415b5e4b0da30c1c36710
During the spring and summer of 2015, the U.S. Geological Survey participated in India’s National Gas Hydrate Program NGHP-02 expedition in the Krishna-Godavari Basin offshore eastern India. The expedition included conventional and pressure coring of sediment, samples of which were transferred to the U.S. Geological Survey in Woods Hole, MA for post-cruise testing. This data release contains measurement results for physical properties measured on recovered core material, including measurements on gas-hydrate-bearing sediment preserved in pressure cores, and physical properties of gas hydrate-free sediment recovered from conventional cores. This work is part of an international NGHP-02 collaboration culminating in a comprehensive collection of publications in a special volume of the journal Marine and Petroleum Geology.
The coring sites chosen for NGHP-02 target a range of subsurface geologic settings in the Krishna-Godavari Basin offshore eastern India. Previous research has indicated a connection between the sediment grain size distribution and the capacity for that sediment to host gas hydrates. The grain size data in this data release are used to advance the understanding of lithological controls on the distribution and concentration of gas hydrate within the geologic framework established by the NGHP-02 sites. As shown in the browse graphic, gas hydrate occurs primarily in the low clay-content sediment (1-4R), not the coarsest sediment (e.g. 1I, 3I).
In addition to funding from the U.S. Geological Survey’s Gas Hydrate Project, this work is sponsored in part by the Department of Energy through an interagency agreement (DE-FE0026166). For more information on the NGHP-02 expedition results, see the special volume of Marine and Petroleum Geology. This work is also part of the NGHP-02 expedition. Links to related data and publications within the NGHP-02 project are collected in the USGS Field Activity Report 2015-023-FA, found at: https://cmgds.marine.usgs.gov/fan_info.php?fan=2015-023-FA.
20150304
20150731
ground condition of the field activity when the samples were collected
None planned.
81.26213167
84.2285450
17.4971983
15.4462300
USGS Metadata Identifier
USGS:5b0415b5e4b0da30c1c36710
None
U.S. Geological Survey
USGS
Woods Hole Coastal and Marine Science Center
WHCMSC
Coastal and Marine Geology Program
CMGP
grain-size analysis
ISO 19115 Topic Category
oceans
geoscientificInformation
USGS Thesaurus
grain-size analysis
marine geology
drilling and coring
core analysis
sedimentology
None
Indian Ocean
Bay of Bengal
Krishna-Godavari Basin
None.
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of the dataset.
U.S. Geological Survey
William F. Waite
Research Geophysicist
mailing
384 Woods Hole Road
Woods Hole
Massachusetts
02543-1598
USA
508-548-8700 x2346
508-457-2310
wwaite@usgs.gov
https://www.sciencebase.gov/catalog/file/get/5b0415b5e4b0da30c1c36710?name=NGHP02_GrainSize_BrowseGraphic.png
Image showing grain size distribution (A) and clay content (B) for NGHP-02 Site 05 sediment specimens. Gas hydrate occurs primarily in the low clay-content sediment (1-4R), not the coarsest sediment (e.g. 1I, 3I).
PNG
Grain size specimens were all collected, stored in sealed plastic bags and refrigerated aboard the D/V Chikyu. Specimens were all stored at refrigerated conditions at the U.S. Geological Survey in Woods Hole, MA subsampled and shipped together to the U.S. Geological Survey’s Pacific Coastal and Marine Science Center (PCMSC) in Santa Cruz, CA. Grain-size processing, using a combination of sieve and laser particle-size analyzer techniques, was carried out uniformly for all specimens, and checked via duplicate analyses run on selected specimens for each NGHP-02 site. All grain-size analyses were performed according to procedures standardized by PCMSC sediment lab, and modified from those described in Folk (1974) Carver (1971):
Carver, R.E., 1971, Procedures in Sedimentary Petrology, New York: Wiley.
Folk, R.L., 1974, Petrology of Sedimentary Rocks, Hemphill, Austin, TX, pp. 1-159.
This data set represents a total of 210 grain size analyses, including the duplicate runs on selected specimens. Additional shipboard grain-size analyses were completed during NGHP-02 using the same make and model of the particle size analyzer used at PCMSC. The shipboard results are included graphically in the related journal articles listed in “Other Citation Details” (Jang and others, 2018; Waite and others, 2018), but are neither owned nor curated by a United States entity.
Horizontal position was determined by GPS satellite data, which provided guidance information for the dynamic positioning system (DPS) utilized by the D/V Chikyu. The DPS also utilizes inputs from tidal, wind and wave data to control six azimuthal thrusters beneath the ship’s hull. The thrusters are capable of 360° adjustment. Given the DPS capabilities, borehole locations for the D/V Chikyu are considered to be accurate to a radius of 15 meters. Details are provided in: Chikyu Hakken – Earth Discovery, Volume 1, Spring 2005, published by JAMSTEC’s Center for Deep Earth Exploration: https://www.jamstec.go.jp/chikyu/e/magazine/backnum/pdf/hk_01_e.pdf
Coring depth measurements used on the D/V Chikyu during NGHP-02 followed standard International Ocean Drilling Program (IODP) protocols. Assessment of these protocols by IODP had determined the vertical position accuracy is on the order of centimeters to meters. Additional information about the depth conventions and accuracy are on pages 8 and 9 of the IODP report “IODP Depth Scales Terminology”:
http://www.iodp.org/policies-and-guidelines/142-iodp-depth-scales-terminology-april-2011/file. Depth resolution ranges from 0.01 to 1 meter.
Deployment sample collection: All specimens were collected from the working half of split cores collected from 20150428 – 20150731. Specimens were stored in heat-sealed plastic specimen bags and refrigerated during the expedition. Depth below seafloor was determined from centimeter scales running alongside the cores during processing, then tied to the continuous downhole depth log using both the IODP standard depth terminologies, which are each based on drilling records of the drill pipe length: CSF-A (total depth from seafloor to target sediment, including gas expansion gaps in the core, if present) and CSF-B (total depth from seafloor to target sediment, after all gas expansion gaps have been removed). The seafloor depth reference (mudline) determined from a combination of noting when the drill string contacts the seafloor and increases the measured weight-on-bit, and visual verification of the drill bit position using an ROV.
20150731
U.S. Geological Survey
William F. Waite
Research Geophysicist
mailing
384 Woods Hole Road
Woods Hole
Massachusetts
02543-1598
USA
508-548-8700 x2346
wwaite@usgs.gov
After the specimens were shipped in coolers with cold packs to the WHCMSC, they were subsampled for grain size. Specimens of ~20 grams were sealed in plastic specimen bags and shipped to PCMSC for analysis.
20151209
U.S. Geological Survey
William F. Waite
Research Geophysicist
mailing
384 Woods Hole Road
Woods Hole
Massachusetts
02543-1598
USA
508-548-8700 x2346
wwaite@usgs.gov
Samples used for particle size determination were placed into a 1000 ml beaker filled with 200-500 ml of deionized water. Organics were removed by adding 5-10 ml of 30weight percent hydrogen peroxide and allowing the sample to oxidize overnight. Following the oxidation the samples were heated to drive off excess hydrogen peroxide. Samples were than washed twice via centrifugation in order to remove all solubles and excess organic material. Following washing the samples were wet sieved to segregate them into three broad size fractions: Coarse/Gravel (greater than 2mm); Intermediate/Sand (2.00 mm - 0.063mm); and Mud (silt and clay) composed of the material greater than 0.063mm.
The gravel fraction was sized with sieves binned at 1/4phi intervals. The sand and mud fractions were sized with a Beckman Coulter LS 13-320 laser diffraction particle size analyzer at 1/4 phi size intervals. The particle size data were then combined and processed with the PCMSC proprietary software called pcSDSZ. The pcSDSZ software determines the particle size distribution according to graphical statistics using the formulas of Folk (1966, 1974); Folk and Ward (1957), Inman (1952), and Trask (1930, 1932), as well as Moment Measures (Collias and others 1963; Jaquet J.-M., Vernet J.-P., 1976).
Collias, E.E., Rona, M.R., McManus, D.A., and Creager, J.S., 1963, Machine processing of geological data: Univ. Washington Tech. Rept. 87, 119 pp.
Folk, R.L., 1966, A review of grain-size parameters, Sedimentology, 6, p. 73-93.
Folk, R.L., 1974, Petrology of Sedimentary Rocks, Hemphill, Austin, TX, p. 1-159.
Folk, R.L., and Ward, W.C., 1957, Brazos River bar - a study in the significance of grain size parameters: Journal Sedimentary Petrology, 27, p. 3-26.
Inman, D.L., 1952, Measures for describing the size distribution of sediments: Journal of Sedimentary Petrology, 22, p. 125-145.
Jaquet J.-M., Vernet J.-P., 1976, Moment and graphic size parameters in sediments of Lake Geneva (Switzerland): Journal of Sedimentary Petrology, 46, p. 305–312.
Trask, P.D., 1930, Mechanical analysis of sediments by centrifuge: Economic Geology, 25, p. 581-599.
Trask P.D., 1932, Origin and Environment of Source Sediments of Petroleum: Gulf Publishing Company, Houston, Texas, 323 pp.
Wentworth, C.K., 1922, A scale of grade and class terms for clastic sediments: Journal of Geology, v. 30, p. 377-392.
20160318
U.S. Geological Survey
Angela Tan
Physical Scientist
mailing
400 Natural Bridges Drive
Santa Cruz
California
95060
USA
831-460-7409
atan@usgs.gov
Data archiving: Microsoft Excel version 15.33 was used to gather all data in a spreadsheet. Specimen locations (latitude/longitude) and depth below seafloor is added to the compiled tabular results spreadsheet. Results spreadsheet is exported to a comma-separated values (csv) file format.
20171230
U.S. Geological Survey
William F. Waite
Research Geophysicist
mailing
384 Woods Hole Road
Woods Hole
Massachusetts
02543-1598
USA
508-548-8700 x2346
wwaite@usgs.gov
Added keywords section with USGS persistent identifier as theme keyword.
20200806
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
Mailing and Physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
Point
Point
210
0.0000001
0.0000001
decimal degrees
D_WGS_1984
WGS_1984
6378137.000000
298.257224
Meters below seafloor
1
meters
Attribute values
NGHP-02_Grain_Size_Data
Grain size distribution and statistics data for sediment specimens collected during India’s National Gas Hydrate Program NGHP-02 expedition in the Krishna Godavari Basin offshore eastern India.
U.S. Geological Survey
Site
Site: NGHP-02 site name designation. Format is: Expedition Name (NGHP-02)-Site Number and Hole Designation Letter. Hole A was used only for logging-while-drilling (no core recovery). Holes B and C were used for coring.
U.S. Geological Survey
Character set (text).
J-CORES sample ID
sampleID:Unique, sequential identifier given at the time of collection to any shipboard subsample taken for any measurement type. Specimens were collected on the D/V Chikyu, so each ID begins with CKY.
Shipboard science party, D/V Chikyu
Character set (text).
USGS Lab ID
USGS_LabID: Unique, sequential identifier given by the USGS PCMSC Sediment Lab at the time of the grain size analysis.
U.S. Geological Survey
Character set (text).
Latitude
Latitude: Latitude coordinate, in degrees (°) minutes (’) decimal seconds (”), of the sample’s location. North latitude recorded as positive values.
Shipboard science party, D/V Chikyu
15°26'46.428"
17°29'50.946"
degrees (°) minutes (’) decimal seconds (”)
Longitude
Longitude: Longitude coordinate, in degrees (°) minutes (’) decimal seconds (”), of the sample’s location. East longitude is recorded as positive values.
Shipboard science party, D/V Chikyu
81°15'43.674"
84°13'42.762"
degrees (°) minutes (’) decimal seconds (”)
Latitude (decimal degrees)
Lat_DD: Latitude coordinate, in decimal-degrees, of sample’s location. North latitude recorded as positive values.
U.S. Geological Survey
15.4462300
17.497485
decimal degrees
Longitude (decimal degrees)
Long_DD: Longitude coordinate, in decimal degrees, of the sample’s location. East longitude is recorded as positive values.
U.S. Geological Survey
81.26213167
84.2285450
decimal degrees
Average Depth (m CSF-A), mbsf
CSFA_Depth_mbsf: Depth of sample in meters below the seafloor (mbsf), using the CSF-A convention in which gas expansion gaps, if present, are included in the depth.
Shipboard science party, D/V Chikyu
20.33
505.05
meters
Average Depth (m CSF-B), mbsf
CSFB_Depth_mbsf: Depth of sample in meters below the seafloor (mbsf), using the CSF-B convention in which gas expansion gaps, if present at the time of core recovery, have been removed.
Shipboard science party, D/V Chikyu
20.33
505.05
meters
MM, Phi Bin
MM_ PhiBin: “MM” indicates that the upper value for the next 65 column headers represents the particles size, in millimeters, for one of the given “bins” or size ranges used by the Beckman Coulter LS 13-320 laser diffraction particle size analyzer (for grain sizes less than 2 mm) and sieves (for grain sizes greater than 2 mm). “Phi Bin” represents the same grain size as the “MM” listing, but in units of sieve mesh size, or “phi.” The grain size relationship between millimeters and phi is: 2(-phi) = particle diameter in millimeters (MM or mm). This column separates the sample identification and location information in the first nine columns from the next 65 columns showing the percentage of the specimen with grain sizes in the bin range around the particle size given in each column’s header. This column contains only the text “Bin weight percent.”
U.S. Geological Survey
Character set (text).
16, -4
16_-4: Percentage of the specimen that has a size in the bin defined as 16 mm in diameter, or (equivalently) a sieve mesh of phi = -4.
U.S. Geological Survey
0
0
weight percent
13.5, -3.75
13.5_-3.75: Percentage of the specimen that has a size in the bin defined as 13.5 mm in diameter, or (equivalently) a sieve mesh of phi = -3.75.
U.S. Geological Survey
0
0
weight percent
11.2, -3.5
11.2_-3.5: Percentage of the specimen that has a size in the bin defined as 11.2 mm in diameter, or (equivalently) a sieve mesh of phi = -3.5.
U.S. Geological Survey
0
0
weight percent
9.51, -3.25
9.51_-3.25: Percentage of the specimen that has a size in the bin defined as 9.51 mm in diameter, or (equivalently) a sieve mesh of phi = -3.25.
U.S. Geological Survey
0
12.462652
weight percent
8, -3
8_-3: Percentage of the specimen that has a size in the bin defined as 8 mm in diameter, or (equivalently) a sieve mesh of phi = -3.
U.S. Geological Survey
0
6.846801
weight percent
6.73, -2.75
6.73_-2.75: Percentage of the specimen that has a size in the bin defined as 6.73 mm in diameter, or (equivalently) a sieve mesh of phi = -2.75.
U.S. Geological Survey
0
11.133954
weight percent
5.66, -2.5
5.66_-2.5: Percentage of the specimen that has a size in the bin defined as 5.66 mm in diameter, or (equivalently) a sieve mesh of phi = -2.5.
U.S. Geological Survey
0
12.882171
weight percent
4.76, -2.25
4.76_-2.25: Percentage of the specimen that has a size in the bin defined as 4.76 mm in diameter, or (equivalently) a sieve mesh of phi = -2.25.
U.S. Geological Survey
0
5.434673
weight percent
4, -2
4_-2: Percentage of the specimen that has a size in the bin defined as 4 mm in diameter, or (equivalently) a sieve mesh of phi = -2.
U.S. Geological Survey
0
5.583842
weight percent
3.36, -1.75
3.36_-1.75: Percentage of the specimen that has a size in the bin defined as 3.36 mm in diameter, or (equivalently) a sieve mesh of phi = -1.75.
U.S. Geological Survey
0
3.464989
weight percent
2.83, -1.5
2.83_-1.5: Percentage of the specimen that has a size in the bin defined as 2.83 mm in diameter, or (equivalently) a sieve mesh of phi = -1.5.
U.S. Geological Survey
0
4.771016
weight percent
2.38, -1.25
2.38_-1.25: Percentage of the specimen that has a size in the bin defined as 2.38 mm in diameter, or (equivalently) a sieve mesh of phi = -1.25.
U.S. Geological Survey
0
5.367096
weight percent
2, -1
2_-1: Percentage of the specimen that has a size in the bin defined as 2 mm in diameter, or (equivalently) a sieve mesh of phi = -1.
U.S. Geological Survey
0
5.507127
weight percent
1.68, -0.75
1.68_-0.75: Percentage of the specimen that has a size in the bin defined as 1.68 mm in diameter, or (equivalently) a sieve mesh of phi = -0.75.
U.S. Geological Survey
0
14.743784
weight percent
1.41, -0.5
1.41_-0.5: Percentage of the specimen that has a size in the bin defined as 1.41 mm in diameter, or (equivalently) a sieve mesh of phi = -0.5.
U.S. Geological Survey
0
16.539501
weight percent
1.19, -0.25
1.19_-0.25: Percentage of the specimen that has a size in the bin defined as 1.19 mm in diameter, or (equivalently) a sieve mesh of phi = -0.25.
U.S. Geological Survey
0
17.579127
weight percent
1, 0
1_0: Percentage of the specimen that has a size in the bin defined as 1 mm in diameter, or (equivalently) a sieve mesh of phi = 0.
U.S. Geological Survey
0
15.972432
weight percent
0.8409, 0.249994
0.8409_0.249994: Percentage of the specimen that has a size in the bin defined as 0.8409 mm in diameter, or (equivalently) a sieve mesh of phi = 0.249994.
U.S. Geological Survey
0
17.240005
weight percent
0.7071, 0.499993
0.7071_0.499993: Percentage of the specimen that has a size in the bin defined as 0.7071 mm in diameter, or (equivalently) a sieve mesh of phi = 0.499993.
U.S. Geological Survey
0
20.509661
weight percent
0.5946, 0.750009
0.5946_0.750009: Percentage of the specimen that has a size in the bin defined as 0.5946 mm in diameter, or (equivalently) a sieve mesh of phi = 0.750009.
U.S. Geological Survey
0
23.407749
weight percent
0.5, 1
0.5_1: Percentage of the specimen that has a size in the bin defined as 0.5 mm in diameter, or (equivalently) a sieve mesh of phi = 1.
U.S. Geological Survey
0
27.192832
weight percent
0.4204, 1.249994
0.4204_1.249994: Percentage of the specimen that has a size in the bin defined as 0.4204 mm in diameter, or (equivalently) a sieve mesh of phi = 1.249994.
U.S. Geological Survey
0
24.116356
weight percent
0.3536, 1.500014
0.3536_1.500014: Percentage of the specimen that has a size in the bin defined as 0.3536 mm in diameter, or (equivalently) a sieve mesh of phi = 1.500014.
U.S. Geological Survey
0
28.086127
weight percent
0.2973, 1.750009
0.2973_1.750009: Percentage of the specimen that has a size in the bin defined as 0.2973 mm in diameter, or (equivalently) a sieve mesh of phi = 1.750009.
U.S. Geological Survey
0
21.139028
weight percent
0.25, 2
0.25_2: Percentage of the specimen that has a size in the bin defined as 0.25 mm in diameter, or (equivalently) a sieve mesh of phi = 2.
U.S. Geological Survey
0
10.152635
weight percent
0.2102, 2.250028
0.2102_2.250028: Percentage of the specimen that has a size in the bin defined as 0.2102 mm in diameter, or (equivalently) a sieve mesh of phi = 2.250028.
U.S. Geological Survey
0
12.231874
weight percent
0.1768, 2.499973
0.1768_2.499973: Percentage of the specimen that has a size in the bin defined as 0.1768 mm in diameter, or (equivalently) a sieve mesh of phi = 2.499973.
U.S. Geological Survey
0
14.312349
weight percent
0.1487, 2.750009
0.1487_2.750009: Percentage of the specimen that has a size in the bin defined as 0.1487 mm in diameter, or (equivalently) a sieve mesh of phi = 2.750009.
U.S. Geological Survey
0
17.334723
weight percent
0.125, 3
0.125_3: Percentage of the specimen that has a size in the bin defined as 0.125 mm in diameter, or (equivalently) a sieve mesh of phi = 3.
U.S. Geological Survey
0
16.988591
weight percent
0.1051, 3.250028
0.1051_3.250028: Percentage of the specimen that has a size in the bin defined as 0.1051 mm in diameter, or (equivalently) a sieve mesh of phi = 3.250028.
U.S. Geological Survey
0
13.513298
weight percent
0.088388, 3.499973
0.088388_3.499973: Percentage of the specimen that has a size in the bin defined as 0.088388 mm in diameter, or (equivalently) a sieve mesh of phi = 3.499973.
U.S. Geological Survey
0
10.356153
weight percent
0.074325, 3.749912
0.074325_3.749912: Percentage of the specimen that has a size in the bin defined as 0.074325 mm in diameter, or (equivalently) a sieve mesh of phi = 3.749912.
U.S. Geological Survey
0
13.317421
weight percent
0.0625, 4
0.0625_4: Percentage of the specimen that has a size in the bin defined as 0.0625 mm in diameter, or (equivalently) a sieve mesh of phi = 4.
U.S. Geological Survey
0
15.091822
weight percent
0.052556, 4.249891
0.052556_4.249891: Percentage of the specimen that has a size in the bin defined as 0.052556 mm in diameter, or (equivalently) a sieve mesh of phi = 4.249891.
U.S. Geological Survey
0
13.437862
weight percent
0.044194, 4.500136
0.044194_4.500136: Percentage of the specimen that has a size in the bin defined as 0.044194 mm in diameter, or (equivalently) a sieve mesh of phi = 4.500136.
U.S. Geological Survey
0.00008
11.431551
weight percent
0.037163, 4.750106
0.037163_4.750106: Percentage of the specimen that has a size in the bin defined as 0.037163 mm in diameter, or (equivalently) a sieve mesh of phi = 4.750106.
U.S. Geological Survey
0.003206
12.352013
weight percent
0.03125, 5
0.03125_5: Percentage of the specimen that has a size in the bin defined as 0.03125 mm in diameter, or (equivalently) a sieve mesh of phi = 5.
U.S. Geological Survey
0.005444
11.643937
weight percent
0.026278, 5.249891
0.026278_5.249891: Percentage of the specimen that has a size in the bin defined as 0.026278 mm in diameter, or (equivalently) a sieve mesh of phi = 5.249891.
U.S. Geological Survey
0.004198
9.654765
weight percent
0.022097, 5.49981
0.022097_5.49981: Percentage of the specimen that has a size in the bin defined as 0.022097 mm in diameter, or (equivalently) a sieve mesh of phi = 5.49981.
U.S. Geological Survey
0.005552
7.724933
weight percent
0.018581, 5.750106
0.018581_5.750106: Percentage of the specimen that has a size in the bin defined as 0.018581 mm in diameter, or (equivalently) a sieve mesh of phi = 5.750106.
U.S. Geological Survey
0.006305
6.974966
weight percent
0.015625, 5.999538
0.015625_5.999538: Percentage of the specimen that has a size in the bin defined as 0.015625 mm in diameter, or (equivalently) a sieve mesh of phi = 5.999538.
U.S. Geological Survey
0.005658
6.911431
weight percent
0.013139, 6.249891
0.013139_6.249891: Percentage of the specimen that has a size in the bin defined as 0.013139 mm in diameter, or (equivalently) a sieve mesh of phi = 6.249891.
U.S. Geological Survey
0.005173
7.201491
weight percent
0.011049, 6.49981
0.011049_6.49981: Percentage of the specimen that has a size in the bin defined as 0.011049 mm in diameter, or (equivalently) a sieve mesh of phi = 6.49981.
U.S. Geological Survey
0.004607
7.05146
weight percent
0.009291, 6.750106
0.009291_6.750106: Percentage of the specimen that has a size in the bin defined as 0.009291 mm in diameter, or (equivalently) a sieve mesh of phi = 6.750106.
U.S. Geological Survey
0.004042
6.671381
weight percent
0.007813, 7.000462
0.007813_7.000462: Percentage of the specimen that has a size in the bin defined as 0.007813 mm in diameter, or (equivalently) a sieve mesh of phi = 7.000462.
U.S. Geological Survey
0.003637
6.514717
weight percent
0.00657, 7.249891
0.00657_7.249891: Percentage of the specimen that has a size in the bin defined as 0.00657 mm in diameter, or (equivalently) a sieve mesh of phi = 7.249891.
U.S. Geological Survey
0.003395
6.773668
weight percent
0.005524, 7.501116
0.005524_7.501116: Percentage of the specimen that has a size in the bin defined as 0.005524 mm in diameter, or (equivalently) a sieve mesh of phi = 7.501116.
U.S. Geological Survey
0.003152
6.891276
weight percent
0.004645, 7.748554
0.004645_7.748554: Percentage of the specimen that has a size in the bin defined as 0.004645 mm in diameter, or (equivalently) a sieve mesh of phi = 7.748554.
U.S. Geological Survey
0.002748
6.655581
weight percent
0.003906, 7.998616
0.003906_7.998616: Percentage of the specimen that has a size in the bin defined as 0.003906 mm in diameter, or (equivalently) a sieve mesh of phi = 7.998616.
U.S. Geological Survey
0.002344
6.4757
weight percent
0.003285, 8.252088
0.003285_8.252088: Percentage of the specimen that has a size in the bin defined as 0.003285 mm in diameter, or (equivalently) a sieve mesh of phi = 8.252088.
U.S. Geological Survey
0.00194
6.105946
weight percent
0.002762, 8.501116
0.002762_8.501116: Percentage of the specimen that has a size in the bin defined as 0.002762 mm in diameter, or (equivalently) a sieve mesh of phi = 8.501116.
U.S. Geological Survey
0.001697
5.456377
weight percent
0.002323, 8.751659
0.002323_8.751659: Percentage of the specimen that has a size in the bin defined as 0.002323 mm in diameter, or (equivalently) a sieve mesh of phi = 8.751659.
U.S. Geological Survey
0.008153
4.906742
weight percent
0.001953, 9.00231
0.001953_9.00231: Percentage of the specimen that has a size in the bin defined as 0.001953 mm in diameter, or (equivalently) a sieve mesh of phi = 9.00231.
U.S. Geological Survey
0.010758
4.689858
weight percent
0.001642, 9.252088
0.001642_9.252088: Percentage of the specimen that has a size in the bin defined as 0.001642 mm in diameter, or (equivalently) a sieve mesh of phi = 9.252088.
U.S. Geological Survey
0.010086
4.490981
weight percent
0.001381, 9.501116
0.001381_9.501116: Percentage of the specimen that has a size in the bin defined as 0.001381 mm in diameter, or (equivalently) a sieve mesh of phi = 9.501116.
U.S. Geological Survey
0.00947
4.302106
weight percent
0.001161, 9.751659
0.001161_9.751659: Percentage of the specimen that has a size in the bin defined as 0.001161 mm in diameter, or (equivalently) a sieve mesh of phi = 9.751659.
U.S. Geological Survey
0.009021
4.277098
weight percent
0.000983, 9.994931
0.000983_9.994931: Percentage of the specimen that has a size in the bin defined as 0.000983 mm in diameter, or (equivalently) a sieve mesh of phi = 9.994931.
U.S. Geological Survey
0.008012
4.064211
weight percent
0.000821, 10.252088
0.000821_10.252088: Percentage of the specimen that has a size in the bin defined as 0.000821 mm in diameter, or (equivalently) a sieve mesh of phi = 10.252088.
U.S. Geological Survey
0.00747
4.035181
weight percent
0.000691, 10.501116
0.000691_10.501116: Percentage of the specimen that has a size in the bin defined as 0.000691 mm in diameter, or (equivalently) a sieve mesh of phi = 10.501116.
U.S. Geological Survey
0.006696
3.435226
weight percent
0.000581, 10.751659
0.000581_10.751659: Percentage of the specimen that has a size in the bin defined as 0.000581 mm in diameter, or (equivalently) a sieve mesh of phi = 10.751659.
U.S. Geological Survey
0.005463
2.806241
weight percent
0.000492, 10.994831
0.000492_10.994931: Percentage of the specimen that has a size in the bin defined as 0.000492 mm in diameter, or (equivalently) a sieve mesh of phi = 10.994831.
U.S. Geological Survey
0.003838
1.974045
weight percent
0.000411, 11.25209
0.000411_11.252088: Percentage of the specimen that has a size in the bin defined as 0.000411 mm in diameter, or (equivalently) a sieve mesh of phi = 11.25209.
U.S. Geological Survey
0.002185
1.122496
weight percent
0.000035, 11.480357
0.00035_11.480357: Percentage of the specimen that has a size in the bin defined as 0.000035 mm in diameter, or (equivalently) a sieve mesh of phi = 11.480357.
U.S. Geological Survey
0.000504
0.263718
weight percent
0.0000241, 12.024678
0.000241_12.024678: Percentage of the specimen that has a size in the bin defined as 0.0000241 mm in diameter, or (equivalently) a sieve mesh of phi = 12.024678.
U.S. Geological Survey
0.0
0.0
weight percent
0.000012, 13.024678
0.00012_13.024678: Percentage of the specimen that has a size in the bin defined as 0.000012 mm in diameter, or (equivalently) a sieve mesh of phi = 13.024678.
U.S. Geological Survey
0.0
0.0
weight percent
weight percent Gravel
Percent_Gravel: Percentage of the specimen that has a grain size greater than 2 mm, which is defined as “Gravel." (Wentworth, C.K., 1922, A scale of grade and class terms for clastic sediments: Journal of Geology, v. 30, p. 377-392)
U.S. Geological Survey
0.0
47.506835
weight percent
weight percent Sand
Percent_Sand: Percentage of the specimen that has a grain size between 63 micrometers and 2 mm, which is defined as “Sand.” (Wentworth, C.K., 1922, A scale of grade and class terms for clastic sediments: Journal of Geology, v. 30, p. 377-392)
U.S. Geological Survey
0.022305
99.677169
weight percent
weight percent Silt
Percent_Silt: Percentage of the specimen that has a grain size between 3.9 micrometers and 63 micrometers, which is defined as “Silt.” (Wentworth, C.K., 1922, A scale of grade and class terms for clastic sediments: Journal of Geology, v. 30, p. 377-392)
U.S. Geological Survey
0.113004
79.019207
weight percent
weight percent Clay
Percent_Clay: Percentage of the specimen that has a grain size less than 3.9 micrometers, which is defined as “Clay.” (Wentworth, C.K., 1922, A scale of grade and class terms for clastic sediments: Journal of Geology, v. 30, p. 377-392)
U.S. Geological Survey
0.110665
48.130925
weight percent
weight percent Mud
Percent_Mud: Percentage of the specimen that has a grain size less than 63 micrometers, which is the sum of the Clay and Silt contributions and defined as “Mud.”
U.S. Geological Survey
0.322831
99.977695
weight percent
Gravel/Sand
Gravel_Sand: The ratio of Gravel to Sand in the specimen
U.S. Geological Survey
0
1.162
unitless
Sand/Silt
Sand_Silt: The ratio of Sand to Silt in the specimen
U.S. Geological Survey
0
714.449
unitless
Silt/Clay
Silt_Clay: The ratio of Silt to Clay in the specimen
U.S. Geological Survey
0.445
14.188
unitless
Sand/Clay
Sand_Clay: The ratio of Sand to Clay in the specimen
U.S. Geological Survey
0.001
900.713
unitless
Sand/Mud
Sand_Mud: The ratio of Sand to Mud in the specimen
U.S. Geological Survey
0
308.759
unitless
Gravel/Mud
Gravel_Mud: The ratio of Gravel to Mud in the specimen
U.S. Geological Survey
0
51.534
unitless
D5 Phi
D5Phi: Particle diameter representing the 5 weight percent cumulative percentile value (5 weight percent of the particles in the sediment are finer than the d5 grain size) in units of phi.
U.S. Geological Survey
-2.33
5.464
phi
D10 Phi
D10Phi: Particle diameter representing the 10 weight percent cumulative percentile value (10 weight percent of the particles in the sediment are finer than the d10 grain size) in units of phi.
U.S. Geological Survey
-2.821
6.031
phi
D16 Phi
D16Phi: Particle diameter representing the 16 weight percent cumulative percentile value (16 weight percent of the particles in the sediment are finer than the d16 grain size) in units of phi.
U.S. Geological Survey
-2.648
6.429
phi
D25 Phi
D25Phi: Particle diameter representing the 25 weight percent cumulative percentile value (25 weight percent of the particles in the sediment are finer than the d25 grain size) in units of phi.
U.S. Geological Survey
-2.456
6.835
phi
D50 Phi
D50Phi: Particle diameter representing the 50 weight percent cumulative percentile value (50 weight percent of the particles in the sediment are finer than the d50 grain size) in units of phi.
U.S. Geological Survey
-0.761
7.914
D75 Phi
D75Phi: Particle diameter representing the 75 weight percent cumulative percentile value (75 weight percent of the particles in the sediment are finer than the d75 grain size) in units of phi.
U.S. Geological Survey
0.132
9.324
phi
D84 Phi
D84Phi: Particle diameter representing the 84 weight percent cumulative percentile value (84 weight percent of the particles in the sediment are finer than the d84 grain size) in units of phi.
U.S. Geological Survey
0.37
9.854
phi
D90 Phi
D90Phi: Particle diameter representing the 90 weight percent cumulative percentile value (90 weight percent of the particles in the sediment are finer than the d90 grain size) in units of phi.
U.S. Geological Survey
0.65
10.227
D95 Phi
D95Phi: Particle diameter representing the 95 weight percent cumulative percentile value (95 weight percent of the particles in the sediment are finer than the d75 grain size) in units of phi.
U.S. Geological Survey
1.05
10.603
phi
D5 mm
D5mm: Particle diameter representing the 5 weight percent cumulative percentile value (5 weight percent of the particles in the sediment are finer than the d5 grain size) in units of mm.
U.S. Geological Survey
0.0006
0.483
mm
D10 mm
D10mm: Particle diameter representing the 10 weight percent cumulative percentile value (10 weight percent of the particles in the sediment are finer than the d10 grain size) in units of mm.
U.S. Geological Survey
0.0008
0.6375
mm
D16 mm
D16mm: Particle diameter representing the 16 weight percent cumulative percentile value (16 weight percent of the particles in the sediment are finer than the d16 grain size) in units of mm.
U.S. Geological Survey
0.0011
0.7736
mm
D25 mm
D25mm: Particle diameter representing the 25 weight percent cumulative percentile value (25 weight percent of the particles in the sediment are finer than the d25 grain size) in units of mm.
U.S. Geological Survey
0.0016
0.9123
mm
D50 mm
D50mm: Particle diameter representing the 50 weight percent cumulative percentile value (50 weight percent of the particles in the sediment are finer than the d50 grain size) in units of mm.
U.S. Geological Survey
0.0041
1.6952
mm
D75 mm
D75mm: Particle diameter representing the 75 weight percent cumulative percentile value (75 weight percent of the particles in the sediment are finer than the d75 grain size) in units of mm.
U.S. Geological Survey
0.0088
5.4862
mm
D84 mm
D84mm: Particle diameter representing the 84 weight percent cumulative percentile value (84 weight percent of the particles in the sediment are finer than the d84 grain size) in units of mm.
U.S. Geological Survey
0.0116
6.2682
mm
D90 mm
D90mm: Particle diameter representing the 90 weight percent cumulative percentile value (90 weight percent of the particles in the sediment are finer than the d90 grain size) in units of mm.
U.S. Geological Survey
0.0153
7.0651
mm
D95 mm
D95mm: Particle diameter representing the 95 weight percent cumulative percentile value (95 weight percent of the particles in the sediment are finer than the d95 grain size) in units of mm.
U.S. Geological Survey
0.0227
5.0281
mm
F-W Median
F-WMedian: Particle diameter representing the 50 weight percent cumulative percentile value (50 weight percent of the particles in the sediment are finer than the F-W Median grain size) in units of phi. This is equivalent to d50 grain size in units of phi. F-W is short for the 1957 publication by Folk and Ward: Folk, R.L., and Ward, W.C., 1957, Brazos River bar - a study in the significance of grain size parameters: Journal Sedimentary Petrology, 27, p. 3-26.
U.S. Geological Survey
-0.761484
7.914291
phi
F-W Mean
F-WMean: The Folk and Ward mean (average) grain size, given by:
F-W Mean = (d16 phi + d50 phi + d84 phi)/3, in units of phi. F-W is short for the 1957 publication by Folk and Ward: Folk, R.L., and Ward, W.C., 1957, Brazos River bar - a study in the significance of grain size parameters: Journal Sedimentary Petrology, 27, p. 3-26.
U.S. Geological Survey
-0.32858
7.92277
phi
F-W Sorting
F-WSorting: The Folk and Ward measure of the variation in grain sizes within the specimen, given by:
F-W Sorting = ((d84 phi – d16 phi)/4) + ((d95 phi – d5 phi)/6.6), in units of phi. F-W is short for the 1957 publication by Folk and Ward: Folk, R.L., and Ward, W.C., 1957, Brazos River bar - a study in the significance of grain size parameters: Journal Sedimentary Petrology, 27, p. 3-26.
U.S. Geological Survey
0.327524
4.277035
phi
F-W Skewness
F-WSkewness: The Folk and Ward measure of the grain size symmetry around the median grain size within the specimen, given by:
F-W Skewness = ((d16 phi + d84 phi – 2·d50 phi)/(2·(d84 phi – d16 phi))) +…
((d5 phi + d95 phi – 2·d50 phi)/(2·(d95 phi – d5 phi))). F-W is short for the 1957 publication by Folk and Ward: Folk, R.L., and Ward, W.C., 1957, Brazos River bar - a study in the significance of grain size parameters: Journal Sedimentary Petrology, 27, p. 3-26.
U.S. Geological Survey
-0.326719
0.695002
unitless
F-W Kurtosis
F-WKurtosis: The Folk and Ward measure of how peaked the grain size distribution is within the specimen, given by:
F-W Kurtosis = ((d95 phi – d5 phi)/(2.44·(d75 phi – d25 phi))). F-W is short for the 1957 publication by Folk and Ward: Folk, R.L., and Ward, W.C., 1957, Brazos River bar - a study in the significance of grain size parameters: Journal Sedimentary Petrology, 27, p. 3-26.
U.S. Geological Survey
0.617483
2.783692
unitless
Inman Median
InmanMedian: Particle diameter representing the 50 weight percent cumulative percentile value (50 weight percent of the particles in the sediment are finer than the Inman Median grain size) in units of phi. This is equivalent to d50 grain size in units of phi. Inman is short for his 1952 publication: Inman, D.L., 1952, Measures for describing the size distribution of sediments: Journal of Sedimentary Petrology, 22, p. 125-145.
U.S. Geological Survey
-0.761484
7.914291
phi
Inman Mean
InmanMean: The Inman mean (average) grain size, given by:
Inman Mean = (d16 phi + d84 phi)/2, in units of phi. Inman is short for his 1952 publication: Inman, D.L., 1952, Measures for describing the size distribution of sediments: Journal of Sedimentary Petrology, 22, p. 125-145.
U.S. Geological Survey
-0.313088
7.966812
phi
Inman Sorting
InmanSorting: The Inman measure of the variation in grain sizes within the specimen, given by:
Inman Sorting = (d84 phi – d16 phi)/2, in units of phi. Inman is short for his 1952 publication: Inman, D.L., 1952, Measures for describing the size distribution of sediments: Journal of Sedimentary Petrology, 22, p. 125-145.
U.S. Geological Survey
0.341693
4.852055
phi
Inman Skewness 16-84
InmanSkew_16-84: One of the two Inman measures of the grain size symmetry around the median grain size within the specimen, given by:
Inman Skewness = (((d16 phi + d84 phi)/2) – d50 phi)/((d84 phi – d16 phi)/2). Inman is short for his 1952 publication: Inman, D.L., 1952, Measures for describing the size distribution of sediments: Journal of Sedimentary Petrology, 22, p. 125-145.
U.S. Geological Survey
-0.346899
0.691765
unitless
Inman Skewness 05-95
InmanSkew_05-95: One of the two Inman measures of the grain size symmetry around the median grain size within the specimen, given by:
Inman Skewness = (((d05 phi + d95 phi)/2) – d50 phi)/((d84 phi – d16 phi)/2). Inman is short for his 1952 publication: Inman, D.L., 1952, Measures for describing the size distribution of sediments: Journal of Sedimentary Petrology, 22, p. 125-145.
U.S. Geological Survey
-0.795402
2.275478
unitless
Inman Kurtosis
InmanKurtosis: The Inman measure of how peaked the grain size distribution is within the specimen, given by:
Inman Kurtosis = (((d95 phi – d05 phi)/2) – ((d84 phi – d16 phi)/2))/((d84 phi – d16 phi)/2). Inman is short for his 1952 publication: Inman, D.L., 1952, Measures for describing the size distribution of sediments: Journal of Sedimentary Petrology, 22, p. 125-145.
U.S. Geological Survey
0.258915
2.937238
unitless
Trask Median
TraskMedian: Particle diameter representing the 50 weight percent cumulative percentile value (50 weight percent of the particles in the sediment are finer than the Trask Median grain size) in units of mm. This is equivalent to d50 grain size in units of mm. Trask is short for the 1930 publication by Trask: Trask, P.D., 1930, Mechanical analysis of sediments by centrifuge: Economic Geology, 25, p. 581-599.
U.S. Geological Survey
0.004145
1.695234
mm
Trask Mean
TraskMean: The Trask mean (average) grain size, given by:
Trask Mean = (d25 mm + d75 mm)/2, in units of mm. Trask is short for the 1930 publication by Trask: Trask, P.D., 1930, Mechanical analysis of sediments by centrifuge: Economic Geology, 25, p. 581-599.
U.S. Geological Survey
0.005409
2.967741
mm
Trask Sorting
TraskSorting: The Trask measure of the variation in grain sizes within the specimen, given by:
Trask Sorting = square root(d25 mm/d75 mm). Trask is short for the 1930 publication by Trask: Trask, P.D., 1930, Mechanical analysis of sediments by centrifuge: Economic Geology, 25, p. 581-599.
U.S. Geological Survey
1.174995
16.612805
unitless
Trask Skewness
TraskSkewness: The Trask measure of the grain size symmetry around the median grain size within the specimen, given by:
Trask Skewness = (d25 mm·d75 mm)/d50 mm. Trask is short for the 1930 publication by Trask: Trask, P.D., 1930, Mechanical analysis of sediments by centrifuge: Economic Geology, 25, p. 581-599.
U.S. Geological Survey
0.064724
4.615582
unitless
Trask Kurtosis
TraskKurtosis: The Trask measure of how peaked the grain size distribution is within the specimen, given by:
Trask Kurtosis = (d75 mm – d25 mm)/(2·(d90 mm – d10 mm)). Trask is short for the 1930 publication by Trask: Trask, P.D., 1930, Mechanical analysis of sediments by centrifuge: Economic Geology, 25, p. 581-599.
U.S. Geological Survey
0.028421
0.449355
unitless
1st Moment, Mean Phi
1stmoment_ MeanPhi: The mean (average) grain size, given by:
1st Moment, Mean Phi = (1/100)·(sum over all Bins(Bin weight percent·BinSize phi)), in units of phi. Bin weight percent is assumed to be in units of weight percent, and the bin grain size (BinSize) is taken to be the midpoint phi size within that bin. The sum of the Bin weight percent values for the entire distribution is assumed to be 100. For further information, see: Collias, E.E., Rona, M.R., McManus, D.A., and Creager, J.S., 1963, Machine processing of geological data, Univ. Washington Tech. Rept. 87, 119 pp.
U.S. Geological Survey
-0.298688
7.882774
phi
1st Moment, Mean mm
1stmoment_ Mean_mm: The mean (average) grain size, given by:
1st Moment, Mean mm = (1/100)·(sum over all Bins(Bin weight percent·BinSize mm)), in units of mm. Bin weight percent is assumed to be in units of weight percent, and the bin grain size (BinSize) is taken to be the midpoint mm size within that bin. The sum of the Bin weight percent values for the entire distribution is assumed to be 100. For further information, see: Collias, E.E., Rona, M.R., McManus, D.A., and Creager, J.S., 1963, Machine processing of geological data, Univ. Washington Tech. Rept. 87, 119 pp.
U.S. Geological Survey
0.004237
1.230025
mm
2nd Moment, Variance
2ndmoment_ Variance: The spread, or variance in the grain size distribution, given by:
2nd Moment, Variance = (1/100)·(sum over all Bins(Bin weight percent·(BinSize phi – Mean phi)2), in units of phi2. Bin weight percent is assumed to be in units of weight percent, and the bin grain size (BinSize) is taken to be the midpoint phi size within that bin. The sum of the Bin weight percent values for the entire distribution is assumed to be 100. For further information, see: Collias, E.E., Rona, M.R., McManus, D.A., and Creager, J.S., 1963, Machine processing of geological data, Univ. Washington Tech. Rept. 87, 119 pp.
U.S. Geological Survey
0.297155
18.193229
phi2
2nd Moment, Std. Dev.
2ndmoment_ StdDev: The standard deviation of the grain size distribution, given by:
2nd Moment, Std. Dev. = square root(Variance), in units of phi. For further information, see: Collias, E.E., Rona, M.R., McManus, D.A., and Creager, J.S., 1963, Machine processing of geological data, Univ. Washington Tech. Rept. 87, 119 pp.
U.S. Geological Survey
0.545119
4.265352
phi
3rd Moment, Skewness
3rdmoment_ Skewness: The Moment Method measure of the grain size symmetry around the median grain size within the specimen, given by:
3rd Moment, Skewness =…
(Standard Deviation-3)· (1/100)·(sum over all Bins(Bin weight percent·(BinSize phi – Mean phi)3), assuming the Bin weight percent is in units of weight percent, and the bin grain size (BinSize) is taken to be the midpoint phi size within that bin. The sum of the Bin weight percent values for the entire distribution is assumed to be 100. For further information, see: Collias, E.E., Rona, M.R., McManus, D.A., and Creager, J.S., 1963, Machine processing of geological data, Univ. Washington Tech. Rept. 87, 119 pp.
U.S. Geological Survey
-1.184709
8.106059
unitless
4th Moment, Kurtosis
4thmoment_ Kurtosis: The Moment Method measure of how peaked the grain size distribution is within the specimen, given by:
4th Moment, Kurtosis =…
(Standard Deviation-4)· (1/100)·(sum over all Bins(Bin weight percent·(BinSize phi – Mean phi)4), assuming the Bin weight percent is in units of weight percent, and the bin grain size (BinSize) is taken to be the midpoint phi size within that bin. The sum of the Bin weight percent values for the entire distribution is assumed to be 100. For further information, see: Collias, E.E., Rona, M.R., McManus, D.A., and Creager, J.S., 1963, Machine processing of geological data, Univ. Washington Tech. Rept. 87, 119 pp.
U.S. Geological Survey
1.511481
93.246556
unitless
These data are available in a Microsoft Excel XLSX as well as a CSV format. The first two lines in the XLSX are header lines, where the second line is an abbreviated column label intended for software packages that are unable to cope with longer labels available in the first row of the XLSX file. The first part of the attribute definition (before the colon) indicates the abbreviated column label. The first row of the CSV file is a header line and is the same as the abbreviated column label on the second row of the XLSX file.
U.S. Geological Survey
U.S. Geological Survey - ScienceBase
mailing and physical address
Denver Federal Center, Building 810, Mail Stop 302
Denver
CO
80225
USA
1-888-275-8747
sciencebase@usgs.gov
The dataset includes the following files: NGHP02_GrainSize_Data.xlsx (data in an Excel spreadsheet), NGHP02_GrainSize_Data.csv (same data in a comma-separated text file), NGHP02_GrainSize_BrowseGraphic.png (browse graphic), and FGDC CSDGM metadata in XML format.
Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
XLXS
Microsoft Excel version 15.33
The dataset contains the XLSX, CSV, browse graphic and associated metadata.
1
https://www.sciencebase.gov/catalog/file/get/5b0415b5e4b0da30c1c36710
https://www.sciencebase.gov/catalog/item/5b0415b5e4b0da30c1c36710
https://doi.org/10.5066/P97RL4X4
The first link downloads all the files on the landing page in a zip file, the second link is to the landing page itself where files can be downloaded individually, and the third link is the same as the second, just in the DOI format.
CSV
Microsoft Excel version 15.33
Comma-Separated Values exported from Excel
The dataset contains the XLSX, CSV, browse graphic and associated metadata.
1
https://www.sciencebase.gov/catalog/file/get/5b0415b5e4b0da30c1c36710
https://www.sciencebase.gov/catalog/item/5b0415b5e4b0da30c1c36710
https://doi.org/10.5066/P97RL4X4
The first link downloads all the files on the landing page in a zip file, the second link is to the landing page itself where files can be downloaded individually, and the third link is the same as the second, just in the DOI format.
None.
If the zip file download option was used, the user must have software capable of uncompressing the zip file and reading the data formats.
20200806
U.S. Geological Survey
William F. Waite
Geophysicist
Mailing and Physical
384 Woods Hole Rd.
Woods Hole
MA
02543-1598
508-548-8700 x2346
508-457-2310
wwaite@usgs.gov
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998