Thomas D. Lorenson
Ray W. Sliter
James E. Conrad
Antoinette G. Papesh
Jonathan A. Warrick
2021
Sediment grain-size data from vibracore samples collected offshore San Francisco, California, during field activity 2019-649-FA from 2019-10-11 to 2019-10-18
comma-delimited text
data release
DOI:10.5066/P9LBG9H5
Pacific Coastal and Marine Science Center, Santa Cruz, California
U.S. Geological Survey
https://doi.org/10.5066/P9LBG9H5
Ray W. Sliter
James E. Conrad
Thomas D. Lorenson
Antoinette G. Papesh
Alicia F. Balster-Gee
Jonathan A. Warrick
2021
Geophysical and core sample data collected offshore San Francisco, California, during field activity 2019-649-FA from 2019-10-11 to 2019-10-18
data release
DOI:10.5066/P9LBG9H5
Pacific Coastal and Marine Science Center, Santa Cruz, CA
U.S. Geological Survey
https://doi.org/10.5066/P9LBG9H5
This section of the data release contains grain-size and total organic carbon (TOC) analyses of 132 samples taken from vibracores that were collected aboard the R/V Bold Horizon in 2019 on U.S. Geological Survey Field Activity 2019-649-FA offshore San Francisco, California. The samples were analyzed for percent weight of grain size and total organic carbon. The samples were taken at approx. 50 cm intervals from (and including) the core-catcher, which represents the bottom of the core.
The U.S. Geological Survey (USGS) analyzed grain size from samples taken from vibracores collected in 2019 offshore San Francisco, California. Samples were used to assess sand and gravel resources in Federal and State waters for potential use in future beach nourishment projects along stretches of the coast where critical erosion hotspots have been identified. This cruise was funded through partnerships with the Bureau of Ocean Energy Management (BOEM) and the State of California Ocean Protection Council (OPC).
Additional information about the field activity from which these data were derived is available online at:
https://cmgds.marine.usgs.gov/fan_info.php?fan=2019-649-FA
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
20191102
ground condition at time data were collected
As needed
-122.87083
-122.39324
38.01347
37.49665
USGS Metadata Identifier
USGS:dc2057ba-2f8d-4437-b31b-2f293d0a7458
ISO 19115 Topic Category
oceans
geoscientificInformation
Data Categories for Marine Planning
Material Resources
Assessments
USGS Thesaurus
vibracoring
marine geology
grain-size analysis
sea-floor characteristics
Marine Realms Information Bank (MRIB) keywords
geology
None
U.S. Geological Survey
USGS
Coastal and Marine Hazards and Resources Program
CMHRP
Pacific Coastal and Marine Science Center
PCMSC
Geographic Names Information System (GNIS)
Pacific Ocean
State of California
San Francisco
Bolinas
Ocean Beach
NGA GEOnet Names Server (GNS)
North Pacific Ocean
None
USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey (USGS, the Bureau of Ocean Energy Management (BOEM), and the California Geological Survey (CGS) as the originator(s) of the dataset and in products derived from these data.
U.S. Geological Survey, Pacific Coastal and Marine Science Center
PCMSC Science Data Coordinator
mailing and physical
2885 Mission Street
Santa Cruz
CA
95060
831-427-4747
pcmsc_data@usgs.gov
2019-649-FA_tracks_and_cores.png
Map showing locations of vibracore sites (purple dots) and tracklines (blue) along which chirp seismic data were collected.
PNG
comma separated file
Identified as best available version
Sediment samples were collected in the lab from vibracores collected during USGS cruise 2019-649-FA using a P-5 Rossfelder vibracorer. The samples were taken at regular intervals, bagged, and labeled. Quality control was conducted during the sample collection process.
Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details.
Position data were provided by a Hemisphere V100 Global Positioning System using L1, C/A code and carrier phase smoothing with a stated accuracy of 60 centimeters.
34 cores were collected on cruise 2019-649-FA with a Rossfelder P-5 vibracorer.
20191017
132 sediment samples were collected from 34 cores. The samples were taken at approx. 50 cm intervals from (and including) the core-catcher, which represents the bottom of the core. Core data: hi-resolution photos, Core logging: whole core P-wave velocity, gamma density and magnetic susceptibility. Core Description - visual core inspection and description.
20191102
The grain-size distributions of sediment samples were determined in the USGS Pacific Coastal and Marine Science Center (PCMSC) sediment lab. Approximately 20g of sediment was sub-sampled and 10mL of 35 percent hydrogen peroxide was added to sit overnight to remove organics. The sample was heated at 250 degree C to remove any remaining hydrogen peroxide and was placed in an ultrasonic bath to liberate the mud (silt and clay) fraction. Subsequently the sample was centrifuged for 1/2 hour and 1 hour to remove soluble salts. Samples were funneled through a 2mm and a 63um sieve to separate the gravel (>2mm), sand (63um to 2mm), and mud (<63um). Both sand and gravel fractions were dried in an 80 degree C oven and weighed. 5mL of 10 percent sodium hexametaphosphate was added to the mud fraction cylinder and distilled water was added to total the volume to 1L. The mud and calgon solution sat overnight to ensure removal of the negative charges from the mud particles. Subsequently, a 20mL aliquot was taken from the 1L mud fraction to determine the weight of the mud. The particle size distribution of the mud and sand fractions were analyzed separately via the Beckman Coulter LS 13 320 aqueous liquid module. The gravel fraction particle size was analyzed via dry sieving. The gravel, sand, and mud grain-size data were all reincorporated back together using the pcSDSZ program in the PCMSC sediment lab and the grain size data was reported in percent 1/4-phi size intervals.
20191215
Angela Tan
U.S. Geological Survey, Pacific Coastal and Marine Science Center
lab technician
mailing and physical
2885 Mission Street
Santa Cruz
CA
95060
831-427-4747
atan@usgs.gov
Performed minor edits to the metadata to correct typos. No data were changed
20211013
U.S. Geological Survey
Susan A. Cochran
Geologist
Mailing and Physical
2885 Mission Street
Santa Cruz
CA
95060
831-460-7545
scochran@usgs.gov
Edits were made to correct spelling in author name. No data were changed. The metadata available from a harvester may supersede metadata bundled within a download file. Users are advised to compare the metadata date of this file to any similar file to ensure they are using the most recent version. (scochran@usgs.gov)
20230516
Point
Point
132
WGS 1984 UTM Zone 11N
0.9996
-117.0
0.0
500000.0
0.0
coordinate pair
0.0001
0.0001
Meter
D WGS 1984
WGS 1984
6378137.0
298.257223563
Attribute table
Table containing attribute information associated with the dataset
Producer defined
FAN ID
Unique U.S. Geological Survey field activity identifier
producer defined
Unique identifier for the U.S. Geological Survey field activity
Sample ID
Name of sample
producer defined
Unique identifier for the sample used given in the field
Lab ID
Name of sample identifier in YY-FFFFF-XX format, where YY is the 2-digit year (for example 16=2016, 99=1999), FFFFF is the 5-digit field-activity-number (FAN) ID code, and XX is a sequential number given to the sample in the lab.
Producer defined
Unique identifier for the sample given during analysis in the lab
Date Collected
Date of sample collection in mm/dd/yyyy format
producer defined
10/12/2019
10/17/2019
Dates in mm/dd/yyyy format
Latitude
Latitude of sample in decimal degrees
producer defined
37.57416
37.87461
decimal degrees
Longitude
Longitude of sample in decimal degrees
producer defined
-122.67767
-122.54202
decimal degrees
Water Depth m
water depth at sample site
producer defined
16
45
meters
Sample Depth cm
sample depth from top of core
producer defined
9
178
centimeters
Wt. percent in -4.00 phi bin or 16 mm bin
Weight percent of sample with grain diameter greater than -4.00 phi, or 16 mm.
producer defined
0
100
percentage
Wt. percent in -3.75 phi bin or 13.5 mm bin
Weight percent of sample with grain diameter between -4.00 and -3.75 phi, or 13.5 and 16 mm.
producer defined
0
100
percentage
Wt. percent in -3.50 phi bin or 11.2 mm bin
Weight percent of sample with grain diameter between -3.75 and -3.50 phi, or 11.2 and 13.5 mm.
producer defined
0
100
percentage
Wt. percent in -3.25 phi bin or 9.51 mm bin
Weight percent of sample with grain diameter between -3.50 and -3.25 phi, or 9.51 and 11.2 mm.
producer defined
0
100
percentage
Wt. percent in -3.00 phi bin or 8 mm bin
Weight percent of sample with grain diameter between -3.25 and -3.00 phi, or 8 and 9.51 mm.
producer defined
0
100
percentage
Wt. percent in -2.75 phi bin or 6.73 mm bin
Weight percent of sample with grain diameter between -3.00 and -2.75 phi, or 6.73 and 8 mm.
producer defined
0
100
percentage
Wt. percent in -2.50 phi bin or 5.66 mm bin
Weight percent of sample with grain diameter between -2.75 and -2.50 phi, or 5.66 and 6.73 mm.
producer defined
0
100
percentage
Wt. percent in -2.25 phi bin or 4.76 mm bin
Weight percent of sample with grain diameter between -2.50 and -2.25 phi, or 4.76 and 5.66 mm.
producer defined
0
100
percentage
Wt. percent in -2.25 phi bin or 4.76 mm bin
Weight percent of sample with grain diameter between -2.50 and -2.25 phi, or 4.76 and 5.66 mm.
producer defined
0
100
percentage
Wt. percent in -2.00 phi bin or 4 mm bin
Weight percent of sample with grain diameter between -2.25 and -2.00 phi, or 4 and 4.76 mm.
producer defined
0
100
percentage
Wt. percent in -1.75 phi bin or 3.36 mm bin
Weight percent of sample with grain diameter between -2.00 and -1.75 phi, or 3.36 and 4 mm.
producer defined
0
100
percentage
Wt. percent in -1.50 phi bin or 2.83 mm bin
Weight percent of sample with grain diameter between -1.75 and -1.50 phi, or 2.83 and 3.36 mm.
producer defined
0
100
percentage
Wt. percent in -1.25 phi bin or 2.38 mm bin
Weight percent of sample with grain diameter between -1.50 and -1.25 phi, or 2.38 and 2.83 mm.
producer defined
0
100
percentage
Wt. percent in -1.00 phi bin or 2 mm bin
Weight percent of sample with grain diameter between -1.25 and -1.00 phi, or 2 and 2.38 mm.
producer defined
0
100
percentage
Wt. percent in -0.75 phi bin or 1.68 mm bin
Weight percent of sample with grain diameter between -1.00 and -0.75 phi, or 1.68 and 2 mm.
producer defined
0
100
percentage
Wt. percent in -0.50 phi bin or 1.41 mm bin
Weight percent of sample with grain diameter between -0.75 and -0.50 phi, or 1.41 and 1.68 mm.
producer defined
0
100
percentage
Wt. percent in -0.25 phi bin or 1.19 mm bin
Weight percent of sample with grain diameter between -0.50 and -0.25 phi, or 1.19 and 1.41 mm.
producer defined
0
100
percentage
Wt. percent in 0.00 phi bin or 1 mm bin
Weight percent of sample with grain diameter between -0.25 and 0.00 phi, or 1 and 1.19 mm.
producer defined
0
100
percentage
Wt. percent in 0.25 phi bin or 0.8409 mm bin
Weight percent of sample with grain diameter between 0.00 and 0.25 phi, or 0.8409 and 1 mm.
producer defined
0
100
percentage
Wt. percent in 0.50 phi bin or 0.7071 mm bin
Weight percent of sample with grain diameter between 0.25 and 0.50 phi, or 0.7071 and 0.8409 mm.
producer defined
0
100
percentage
Wt. percent in 0.75 phi bin or 0.5946 mm bin
Weight percent of sample with grain diameter between 0.50 and 0.75 phi, or 0.5946 and 0.7071 mm.
producer defined
0
100
percentage
Wt. percent in 1.00 phi bin or 0.5 mm bin
Weight percent of sample with grain diameter between 0.75 and 1.00 phi, or 0.5 and 0.5946 mm.
producer defined
0
100
percentage
Wt. percent in 1.25 phi bin or 0.4204 mm bin
Weight percent of sample with grain diameter between 1.00 and 1.25 phi, or 0.4204 and 0.5 mm.
producer defined
0
100
percentage
Wt. percent in 1.50 phi bin or 0.3536 mm bin
Weight percent of sample with grain diameter between 1.25 and 1.50 phi, or 0.3536 and 0.4204 mm.
producer defined
0
100
percentage
Wt. percent in 1.75 phi bin or 0.2973 mm bin
Weight percent of sample with grain diameter between 1.50 and 1.75 phi, or 0.2973 and 0.3536 mm.
producer defined
0
100
percentage
Wt. percent in 2.00 phi bin or 0.25 mm bin
Weight percent of sample with grain diameter between 1.75 and 2.00 phi, or 0.25 and 0.2973 mm.
producer defined
0
100
percentage
Wt. percent in 2.25 phi bin or 0.2102 mm bin
Weight percent of sample with grain diameter between 2.00 and 2.25 phi, or 0.2102 and 0.25 mm.
producer defined
0
100
percentage
Wt. percent in 2.50 phi bin or 0.1768 mm bin
Weight percent of sample with grain diameter between 2.25 and 2.50 phi, or 0.1768 and 0.2102 mm.
producer defined
0
100
percentage
Wt. percent in 2.75 phi bin or 0.1487 mm bin
Weight percent of sample with grain diameter between 2.50 and 2.75 phi, or 0.1487 and 0.1768 mm.
producer defined
0
100
percentage
Wt. percent in 3.00 phi bin or 0.125 mm bin
Weight percent of sample with grain diameter between 2.75 and 3.00 phi, or 0.125 and 0.1487 mm.
producer defined
0
100
percentage
Wt. percent in 3.25 phi bin or 0.1051 mm bin
Weight percent of sample with grain diameter between 3.00 and 3.25 phi, or 0.1051 and 0.125 mm.
producer defined
0
100
percentage
Wt. percent in 3.50 phi bin or 0.08839 mm bin
Weight percent of sample with grain diameter between 3.25 and 3.50 phi, or 0.08839 and 0.1051 mm.
producer defined
0
100
percentage
Wt. percent in 3.75 phi bin or 0.07433 mm bin
Weight percent of sample with grain diameter between 3.50 and 3.75 phi, or 0.07433 and 0.08839 mm.
producer defined
0
100
percentage
Wt. percent in 3.75 phi bin or 0.07433 mm bin
Weight percent of sample with grain diameter between 3.50 and 3.75 phi, or 0.07433 and 0.08839 mm.
producer defined
0
100
percentage
Wt. percent in 4.00 phi bin or 0.0625 mm bin
Weight percent of sample with grain diameter between 3.75 and 4.00 phi, or 0.0625 and 0.07433 mm.
producer defined
0
100
percentage
Wt. percent in 4.25 phi bin or 0.052556 mm bin
Weight percent of sample with grain diameter between 4.00 and 4.25 phi, or 0.052556 and 0.0625 mm.
producer defined
0
100
percentage
Wt. percent in 4.50 phi bin or 0.044194 mm bin
Weight percent of sample with grain diameter between 4.25 and 4.50 phi, or 0.044194 and 0.052556 mm.
producer defined
0
100
percentage
Wt. percent in 4.75 phi bin or 0.037163 mm bin
Weight percent of sample with grain diameter between 4.50 and 4.75 phi, or 0.037163 and 0.044194 mm.
producer defined
0
100
percentage
Wt. percent in 5.00 phi bin or 0.03125 mm bin
Weight percent of sample with grain diameter between 4.75 and 5.00 phi, or 0.03125 and 0.037163 mm.
producer defined
0
100
percentage
Wt. percent in 5.25 phi bin or 0.02628 mm bin
Weight percent of sample with grain diameter between 5.00 and 5.25 phi, or 0.02628 and 0.03125 mm.
producer defined
0
100
percentage
Wt. percent in 5.50 phi bin or 0.0221 mm bin
Weight percent of sample with grain diameter between 5.25 and 5.50 phi, or 0.0221 and 0.02628 mm.
producer defined
0
100
percentage
Wt. percent in 5.75 phi bin or 0.01858 mm bin
Weight percent of sample with grain diameter between 5.50 and 5.75 phi, or 0.01858 and 0.0221 mm.
producer defined
0
100
percentage
Wt. percent in 6.00 phi bin or 0.01563 mm bin
Weight percent of sample with grain diameter between 5.75 and 6.00 phi, or 0.01563 and 0.01858 mm.
producer defined
0
100
percentage
Wt. percent in 6.25 phi bin or 0.01314 mm bin
Weight percent of sample with grain diameter between 6.00 and 6.25 phi, or 0.01314 and 0.01563 mm.
producer defined
0
100
percentage
Wt. percent in 6.50 phi bin or 0.01105 mm bin
Weight percent of sample with grain diameter between 6.25 and 6.50 phi, or 0.01105 and 0.01314 mm.
producer defined
0
100
percentage
Wt. percent in 6.75 phi bin or 0.00929 mm bin
Weight percent of sample with grain diameter between 6.50 and 6.75 phi, or 0.00929 and 0.01105 mm.
producer defined
0
100
percentage
Wt. percent in 7.00 phi bin or 0.00781 mm bin
Weight percent of sample with grain diameter between 6.75 and 7.00 phi, or 0.00781 and 0.00929 mm.
producer defined
0
100
percentage
Wt. percent in 7.25 phi bin or 0.00657 mm bin
Weight percent of sample with grain diameter between 7.00 and 7.25 phi, or 0.00657 and 0.00781 mm.
producer defined
0
100
percentage
Wt. percent in 7.50 phi bin or 0.00552 mm bin
Weight percent of sample with grain diameter between 7.25 and 7.50 phi, or 0.00552 and 0.00657 mm.
producer defined
0
100
percentage
Wt. percent in 7.75 phi bin or 0.00465 mm bin
Weight percent of sample with grain diameter between 7.50 and 7.75 phi, or 0.00465 and 0.00552 mm.
producer defined
0
100
percentage
Wt. percent in 8.00 phi bin or 0.00391 mm bin
Weight percent of sample with grain diameter between 7.75 and 8.00 phi, or 0.00391 and 0.00465 mm.
producer defined
0
100
percentage
Wt. percent in 8.25 phi bin or 0.00329 mm bin
Weight percent of sample with grain diameter between 8.00 and 8.25 phi, or 0.00329 and 0.00391 mm.
producer defined
0
100
percentage
Wt. percent in 8.50 phi bin or 0.00276 mm bin
Weight percent of sample with grain diameter between 8.25 and 8.50 phi, or 0.00276 and 0.00329 mm.
producer defined
0
100
percentage
Wt. percent in 8.75 phi bin or 0.00232 mm bin
Weight percent of sample with grain diameter between 8.50 and 8.75 phi, or 0.00232 and 0.00276 mm.
producer defined
0
100
percentage
Wt. percent in 9.00 phi bin or 0.00195 mm bin
Weight percent of sample with grain diameter between 8.75 and 9.00 phi, or 0.00195 and 0.00232 mm.
producer defined
0
100
percentage
Wt. percent in 9.25 phi bin or 0.00164 mm bin
Weight percent of sample with grain diameter between 9.00 and 9.25 phi, or 0.00164 and 0.00195 mm.
producer defined
0
100
percentage
Wt. percent in 9.50 phi bin or 0.00138 mm bin
Weight percent of sample with grain diameter between 9.25 and 9.50 phi, or 0.00138 and 0.00164 mm.
producer defined
0
100
percentage
Wt. percent in 9.75 phi bin or 0.00116 mm bin
Weight percent of sample with grain diameter between 9.50 and 9.75 phi, or 0.00116 and 0.00138 mm.
producer defined
0
100
percentage
Wt. percent in 9.99 phi bin or 0.00098 mm bin
Weight percent of sample with grain diameter between 9.75 and 9.99 phi, or 0.00098 and 0.00116 mm.
producer defined
0
100
percentage
Wt. percent in 10.25 phi bin or 0.00082 mm bin
Weight percent of sample with grain diameter between 9.99 and 10.25 phi, or 0.00082 and 0.00098 mm.
producer defined
0
100
percentage
Wt. percent in 10.50 phi bin or 0.00069 mm bin
Weight percent of sample with grain diameter between 10.25 and 10.50 phi, or 0.00069 and 0.00082 mm.
producer defined
0
100
percentage
Wt. percent in 10.75 phi bin or 0.00058 mm bin
Weight percent of sample with grain diameter between 10.50 and 10.75 phi, or 0.00058 and 0.00069 mm.
producer defined
0
100
percentage
Wt. percent in 10.99 phi bin or 0.00049 mm bin
Weight percent of sample with grain diameter between 10.75 and 10.99 phi, or 0.00049 and 0.00058 mm.
producer defined
0
100
percentage
Wt. percent in 11.25 phi bin or 0.0004 mm bin
Weight percent of sample with grain diameter between 10.99 and 11.25 phi, or 0.0004 and 0.00049 mm.
producer defined
0
100
percentage
Wt. percent in 11.48 phi bin or 0.00035 mm bin
Weight percent of sample with grain diameter between 11.25 and 11.48 phi, or 0.00035 and 0.0004 mm.
producer defined
0
100
percentage
Wt. percent in 12.02 phi bin or 0.000241 mm bin
Weight percent of sample with grain diameter between 11.48 and 12.02 phi, or 0.000241 and 0.00035 mm.
producer defined
0
100
percentage
Wt. percent in 13.02 phi bin or 0.00012 mm bin
Weight percent of sample with grain diameter between 12.02 and 13.02 phi, or 0.00012 and 0.000241 mm.
producer defined
0
100
percentage
Percent Gravel
percent of sample greater than 2 mm.
producer defined
0
100
percentage
Percent Sand
percent of sample less than 2 mm and greater than 63 microns.
producer defined
0
100
percentage
Percent Silt
percent of sample less than 63 microns and greater than 4 microns.
producer defined
0
100
percentage
Percent Clay
percent of sample less than 4 microns.
producer defined
0
100
percentage
Percent Mud
percent of sample less than 63 microns.
producer defined
0
100
percentage
Gravel to Sand Ratio
ratio of percent gravel in sample to percent sand.
producer defined
0
100
no unit
Sand to Silt Ratio
ratio of percent sand in sample to percent silt.
producer defined
0
100
no unit
Silt to Clay Ratio
ratio of percent silt in sample to percent clay.
producer defined
0
100
no unit
Sand to Clay Ratio
ratio of percent sand in sample to percent clay.
producer defined
0
100
no unit
Sand to Mud Ratio
ratio of percent sand in sample to percent mud.
producer defined
0
100
no unit
Gravel to Mud Ratio
ratio of percent gravel in sample to percent mud.
producer defined
0
100
no unit
D5 Phi
Phi size at D5 for sample.
producer defined
10
-8
Phi size
D10 Phi
Phi size at D10 for sample.
producer defined
10
-8
Phi size
D16 Phi
Phi size at D16 for sample.
producer defined
10
-8
Phi size
D25 Phi
Phi size at D25 for sample.
producer defined
10
-8
Phi size
D50 Phi
Phi size at D50 for sample.
producer defined
10
-8
Phi size
D75 Phi
Phi size at D75 for sample.
producer defined
10
-8
Phi size
D84 Phi
Phi size at D84 for sample.
producer defined
10
-8
Phi size
D90 Phi
Phi size at D90 for sample.
producer defined
10
-8
Phi size
D95 Phi
Phi size at D95 for sample.
producer defined
10
-8
Phi size
D5 mm
mm size at D5 for sample.
producer defined
0.00098
256
millimeters
D10 mm
mm size at D10 for sample.
producer defined
0.00098
256
millimeters
D16 mm
mm size at D16 for sample.
producer defined
0.00098
256
millimeters
D25 mm
mm size at D25 for sample.
producer defined
0.00098
256
millimeters
D50 mm
mm size at D50 for sample.
producer defined
0.00098
256
millimeters
D75 mm
mm size at D75 for sample.
producer defined
0.00098
256
millimeters
D84 mm
mm size at D84 for sample.
producer defined
0.00098
256
millimeters
D90 mm
mm size at D90 for sample.
producer defined
0.00098
256
millimeters
D95 mm
mm size at D95 for sample.
producer defined
0.00098
256
millimeters
F-W Median Phi
Phi size median for sample by Folk and Ward (1957) method.
producer defined
10
-8
Phi size
F-W Mean Phi
Phi size mean for sample by Folk and Ward (1957) method.
producer defined
10
-8
Phi size
F-W Sorting Phi
sorting for sample by Folk and Ward (1957) method.
producer defined
10
-8
Phi size
F-W Skewness Phi
skewness for sample by Folk and Ward (1957) method.
producer defined
10
-8
Phi size
F-W Kurtosis Phi
kurtosis for sample by Folk and Ward (1957) method.
producer defined
10
-8
Phi size
Inman Median Phi
Phi size median for sample by Inman (1952) method.
producer defined
10
-8
Phi size
Inman Mean Phi
Phi size mean for sample by Inman (1952) method.
producer defined
10
-8
Phi size
Inman Sorting Phi
sorting for sample by Inman (1952) method.
producer defined
10
-8
Phi size
Inman Skew 16-84 Phi
skewness for sample (D16-D84) by Inman (1952) method.
producer defined
10
-8
Phi size
Inman Skew 05-95 Phi
skewness for sample (D05-D95) by Inman (1952) method.
producer defined
10
-8
Phi size
Inman Kurtosis Phi
kurtosis for sample by Inman (1952) method.
producer defined
10
-8
Phi size
Trask Median mm
mm size median for sample by Trask (mm) method.
producer defined
0.00098
256
millimeters
Trask Mean mm
mm size mean for sample by Trask (mm) method.
producer defined
0.00098
256
millimeters
Trask Sorting mm
sorting for sample by Trask (mm) method.
producer defined
0.00098
256
millimeters
Trask Skewness mm
skewness for sample by Trask (mm) method.
producer defined
10
-8
millimeters
Trask Kurtosis mm
kurtosis for sample by Trask (mm) method.
producer defined
10
-8
millimeters
Mean Phi
phi size mean for sample.
producer defined
10
-8
Phi size
Mean mm
mm size mean for sample.
producer defined
10
-8
millimeters
Variance Phi
variance for sample.
producer defined
10
-8
Phi size
Std. Dev. Phi
standard deviation for sample.
producer defined
10
-8
Phi size
Skewness Phi
skewness for sample.
producer defined
10
-8
Phi size
Kurtosis Phi
kurtosis for sample.
producer defined
10
-8
Phi size
Wt. percent total carbon
total weight percentage of carbon for sample.
producer defined
0.022
1.835
percent
Wt. percent total organic carbon
total weight percentage of organic carbon for sample.
producer defined
0.009
1.792
percent
Wt. percent total inorganic carbon
total weight percentage of inorganic carbon for sample.
producer defined
0.0
0.832
percent
Wt. percent calcium carbonate
weight percentage of calcium carbonate for sample.
producer defined
0.0
6.931
percent
The first line of the csv file is a header line.
U.S. Geological Survey
U.S. Geological Survey Pacific Coastal and Marine Science Center
mailing and physical
2885 Mission Street
Santa Cruz
CA
95060
1-831-427-4747
pcmsc_data@usgs.gov
2019-649-FA_grainsize.csv contains grain size data for samples collected during PCMSC field activity 2019-649-FA. Supplemental files include 2019-649-FA_core_locations.csv and 2019-649-FA_core_locations_shapefile.zip.
Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
comma-delimited text
20210113
csv table
0.1196
https://doi.org/10.5066/P9LBG9H5
Data can be downloaded using the Network_Resource_Name link, then scroll down to the Sampling Data/Sediment grain size data section.
shapefile
20210430
2019-649-FA_core_locations_shapefile.zip is a shapefile of vibracore locations
Winzip, 7-zip, or Winrar are free software that will open .zip files
0.003
https://doi.org/10.5066/P9690BEK
Data can be downloaded using the Network_Resource_Name link, then scroll down to the Sampling Data/Sediment grain size data section.
comma-delimited text
20210430
2019-649-FA_core_locations.csv is a text file containing vibracore locations
no compression used
0.000935
https://doi.org/10.5066/P9690BEK
Data can be downloaded using the Network_Resource_Name link, then scroll down to the Sampling Data/Sediment grain size data section.
None.
These data can be viewed with Microsoft Excel software.
20230516
U.S. Geological Survey, Pacific Coastal and Marine Science Center
PCMSC Science Data Coordinator
mailing and physical
2885 Mission Street
Santa Cruz
CA
95060
831-427-4747
pcmsc_data@usgs.gov
Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998