U.S. Geological Survey
20161104
Grainsize and Mineralogy Data of Sediments Samples Collected at Crocker Reef, Florida, 2013-2014
first
tabular digital data
U.S. Geological Survey Data Release
doi:10.5066/F7V40SBR
St. Petersburg, FL
U.S. Geological Survey
https://doi.org/10.5066/F7V40SBR
Understanding the processes that govern whether a coral reef is accreting (growing) or dissolving are fundamental to questions of reef health and resiliency. A total of 52 surficial sediment samples were collected within a 1-km x 1-km area around Crocker Reef in the Florida Keys, USA, between 2013 and 2014. Samples 1-35 were collected in July 2013 and samples 36-52 were collected in July 2014. The samples were processed using conventional, published techniques (see process step 2) to yield grain size and mineralogical data. The dataset, CRKR2013-2014_SEDIMENT_Mineralogy.zip contains a spreadsheet with mineralogical data for each sample. The dataset, CRKR2013-2014_SEDIMENT_GrainSize.zip contains a spreadsheet with grain size data for each sample.
Sediment data were collected to support the Reefscape Characterization task of the USGS Coral Reef Ecosystem Studies project (http://coastal.er.usgs.gov/crest/), which is focused on geochemical, geologic, and metabolic processes that affect carbonate precipitation and dissolution of coral reefs. Benthic composition, topographic relief, areal extent, and temporal stability are critical factors that contribute to the value of a given marine habitat. To provide context for the data collected in the other tasks, the focus of this task is to characterize physical aspects of the project study sites. Characterizations of the Crocker Reef study area include a habitat classification map, sediment distribution, and vertical temperature profiles. Sediment samples were acquired during USGS field activity number 13CRE02 in 2013 and 2014-315-FA in 2014.
Sediment analyses, except for mineralogy, were performed at the Eckerd College Sedimentology Laboratory by Christopher S. Moore under the guidance of Eckerd College professor Dr. Gregg Brooks (see Poppe et al., Gibbs 1974, Folk 1965, Milliman 1974, and Dean 1974 listed in Cross Reference section). Mineralogical analyses, including photomicrographs, were performed under the direction of Dr. William Benzel at the USGS Central Minerals and Environmental Resources Science Center, located in Denver, Colorado. The data were collected under Florida Keys National Marine Sanctuary permit FKNMS-2013-097.
20130720
20140712
ground condition
None planned
-80.5359189100
-80.5209581100
24.9167055000
24.9033566400
USGS Metadata Identifier
USGS:d4f1672b-b287-4446-9ff5-3362a1c99a65
ISO 19115 Topic Category
oceans
USGS Thesaurus
aquatic biology
marine geology
remote sensing
None
sediment samples
sediment images
seafloor
coral reef
Global Change Master Science Directory
OCEAN > MARINE SEDIMENTS > SEDIMENT COMPOSITION
OCEAN > COASTAL PROCESSES > CORAL REEFS
DOI/USGS/CMG > COASTAL AND MARINE GEOLOGY, U.S. GEOLOGICAL SURVEY, U.S. DEPARTMENT OF INTERIOR
GCMD Instrument
EARTH REMOTE SENSING INSTRUMENTS > PASSIVE REMOTE SENSING > PHOTON/OPTICAL DETECTORS > CAMERAS > CAMERAS
Geographic Names Information System
Crocker Reef
Florida Keys
Florida
Oregon Geospatial Enterprise Office (GEO) Stratum Keyword
epipelagic
none
2013-2014
None
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. The U.S. Geological Survey requests to be acknowledged as originator of these data in future products or derivative research.
David Zawada
U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL
Research Oceanographer
mailing and physical address
600 4th Street South
St. Petersburg
FL
33701
USA
727 502-8132
727 502-8181
dzawada@usgs.gov
M-F, 9:00-5:00 ET
Acknowledgment of the U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, as a data source would be appreciated in products developed from these data, and such acknowledgment as is standard for citation and legal practices for data source is expected. Sharing of new data layers developed directly from these data would also be appreciated by the U.S. Geological Survey staff. Users should be aware that comparisons with other datasets for the same area from other periods may be inaccurate because of inconsistencies resulting from changes in photointerpretation, mapping conventions, and digital processes over time. These data are not legal documents and are not to be used as such.
Unclassified
Unclassified
None
Microsoft Windows 7 Enterprise Service Pack 1; Esri ArcCatalog 10.4.1
Poppe, L.J., Eliason, A.H., Fredericks, J.J., Rendigs, R.R., Blackwood, D., and Polloni, C.F.
2000
Chapter 1: Grain-Size Analysis of Marine Sediments-Methodology and Data Processing
U.S. Geological Survey Open-File Report
00-358
http://pubs.usgs.gov/of/2000/of00-358/index.htm
Dean, W.E.
1974
Determination of carbonate and organic matter in calcareous sediments and sedimentary rocks by loss on ignition: comparison with other methods
Journal of Sedimentary Petrology
v. 44, no. 1, p. 242-248
https://doi.org/10.1306/74D729D2-2B21-11D7-8648000102C1865D
Folk, R.L.
1965
Petrology of Sedimentary Rocks
Hemphill Publishing Company Austin
p. 37-38
Gibbs, R.J.
1974
A settling tube for sand-sized analysis
Journal of Sedimentary Petrology
v. 44, no.2, 583-588
Milliman, J.D.
1974
Marine Carbonates
Recent sedimentary carbonates, pt. 1
N/A
New York, NY
Springer
Williams, S.J., Arsenault, M.A., Buczkowski, B.J., Reid, J.A., Flocks, J.G., Kulp, M.A., Penland, S., and Jenkins, C.J.
2006
Surficial sediment character of the Louisiana offshore Continental Shelf region: a GIS Compilation
U.S. Geological Survey Open-File Report 2006-1195
N/A
http://pubs.usgs.gov/of/2006/1195/htmldocs/images/chart.pdf
GPS positional data were collected with a Garmin GPSMAP 1040xs receiver. Manufacturer specifies an accuracy to within 15 meters 95% of the time and within 5 to 10 meters (16 to 33 feet) under normal conditions.
Data cover area specified for this project without known issues.
All collected sediment samples were analyzed and results reported in this data release. In the Minerology spreadsheet, CRKR2013-2014_SEDIMENT_Mineralogy.xlsx, a "-" means undetectable.
Within 15 m
A formal accuracy assessment of the vertical positional information in the dataset has either not been conducted, or is not applicable
Samples were collected by hand while SCUBA diving and placed in sealable, 1-gallon-sized plastic bags. Wet samples were dehydrated to remove water and salts within 6 hours of collection by rinsing with 95% denatured alcohol, allowing samples to settle, decanting the alcohol, and repeating this process two additional times. Samples were then allowed to air dry prior to analysis for grain size and mineral composition.
20130720
Dave Zawada
U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL
Research Oceanographer
mailing and physical address
600 4th Street South
St. Petersburg
FL
33701
USA
727 502-8132
dzawada@usgs.gov
M-F, 9:00-5:00 ET
Grain size was measured via settling-tube for sand-sized fractions (Gibbs, 1974), and pipette for mud-sized fractions (Folk, 1965). Each day's settling tube operations were compared to known laboratory standards at the Eckerd College sedimentary lab. Calcium carbonate content was determined by the acid leaching method (Milliman, 1974). Total organic matter (TOM) was measured by loss on ignition (LOI) at 550 degrees Celsius for > 2.5 hours (Dean, 1974).
20130807
Kimberly Yates
U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL
Research Oceanographer
mailing and physical address
600 4th Street South
St. Petersburg
FL
33701
USA
727 502-8059
kyates@usgs.gov
M-F, 10:00-6:00 ET
X-ray diffraction (XRD) analysis was used to determine the mineralogy of the sediment samples. Photomicrographs were also taken of each sample.
20140301
William Benzel
U.S. Geological Survey, Denver Federal Center, Denver, CO
Physical Scientist
mailing and physical address
Bldg. 810, Entrance E-11, MS - 973
Denver
CO
80225
USA
303 236-2444
wbenzel@usgs.gov
M-F, 9:00-5:00 MT
Additional Exif header information was added to images using ExifTool by Phil Harvey (http://www.sno.phy.queensu.ca/~phil.exiftool). A Java program was developed by USGS staff to make the Exif header editing process faster and more automated. The tags used to populate the headers are: GPSLatitude, GPSLongitude, GPSDateStamp, GPSLatitudeRef, GPSLongitudeRef, Artist, Copyright, Comment, CopyrightNotice, Credit, Contact, Keywords, and Caption
20160916
Dave Zawada
U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL
Research Oceanographer
mailing and physical address
600 4th Street South
St. Petersburg
FL
33701
USA
727 502-8132
dzawada@usgs.gov
M-F, 9:00-5:00 ET
Metadata created in Notepad++.
20161003
Dave Zawada
U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL
Research Oceanographer
mailing and physical address
600 4th Street South
St. Petersburg
FL
33701
USA
727 502-8132
dzawada@usgs.gov
M-F, 9:00-5:00 ET
Added keywords section with USGS persistent identifier as theme keyword.
20201013
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
0.000001
0.000001
Decimal degrees
North American Datum of 1983 (2011)
Geodetic Reference System 80
6378137.0
298.257222101
CRKR2013-2014_SEDIMENT_GrainSize.xlsx
Spreadsheet containing grain size information for sediment samples collected at Crocker Reef, Florida. Grain size data were reported on a percent-weight basis for phi (Φ) sizes ranging from >-2 to 12.
USGS
Sample ID
Sediment sample identification number
USGS
Sample IDs begin with the USGS field activity number (FAN) followed by sequential, unique integer numbers. FANs were 13CRE02 for samples collected in 2013 and 2014-315-FA for samples collected in 2014.
Latitude
Latitude coordinate in decimal degrees
North American Datum of 1983
24.903649
24.915765
decimal degrees
Longitude
Longitude coordinate in decimal degrees
North American Datum of 1983
-80.534952
-80.521690
decimal degrees
Phi (f) size class
Sediment grain sizes reported as phi numbers ranging between >-2 and 12. Phi sizes were determined using the chart in Williams et al. 2006, which relates phi sizes to particle diameters in millimeters, as well as relates phi size ranges to descriptive terms such as clay, silt, sand, etc. phi = log2(diameter in mm)
USGS
Particles sizes were binned into the following groups of phi numbers: >-2; >-1; -1; -0.5 to -1; 0 to -0.5; 0.5 to 0; 0.5 to 1; 1 to 1.5; 1.5 to 2; 2 to 2.5; 2.5 to 3; 3 to 3.5; 3.5 to 4; 4 to 8; 8 to 12
CRKR2013-2014_SEDIMENT_Mineralogy.xlsx
Spreadsheet containing mineral information for sediment samples collected at Crocker Reef, Florida
USGS
Sample ID
Sediment sample identification number
USGS
Sample IDs begin with the USGS field activity number (FAN) followed by sequential, unique integer numbers. FANs were 13CRE02 for samples collected in 2013 and 2014-315-FA for samples collected in 2014.
Latitude
Latitude coordinate in decimal degrees
North American Datum of 1983
24.903649
24.915765
decimal degrees
Longitude
Longitude coordinate in decimal degrees
North American Datum of 1983
-80.534952
-80.521690
decimal degrees
% Carbonate
Percent carbonate by weight
USGS
12.384
99.754
percent
% Total Organic Matter (Loss-On-Ignition)
Percent total organic matter by weight
ancient geologists
0.007
30.219
percent
% Aragonite
Percent aragonite by weight
ancient geologists
56
76
percent
% Mg-Calcite
Percent magnesium calcite by weight
ancient geologists
23
43
percent
% Calcite*
Percent calcite by weight
ancient geologists
If present, the calcite concentration in each sample did not exceed our detection limit of 3%. This is represented by a "-".
% Quartz
Percent quartz by weight
ancient geologists
1
3
percent
U.S. Geological Survey
Dave Zawada
Research Oceanographer
mailing and physical address
600 4th Street South
St. Petersburg
FL
33701
USA
727 502-8132
M-F, 9:00-5:00 ET
CRKR2013-2014_SEDIMENT_GrainSize.xlsx and CRKR2013-2014_SEDIMENT_Mineralogy.xlsx
Although these data have been processed successfully on a computer system at 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. The USGS shall not be held liable for improper or incorrect use of the data described or contained herein. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
XLSX
1
Mircosoft Excel
https://coastal.er.usgs.gov/data-release/doi-F7V40SBR/data/CRKR2013-2014_SEDIMENT_GrainSize.zip
https://coastal.er.usgs.gov/data-release/doi-F7V40SBR/data/CRKR2013-2014_SEDIMENT_Mineralogy.zip
None
Contact U.S. Geological Survey.
Vary
Contact U.S. Geological Survey for details.
20201013
Dave Zawada
U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL
Research Oceanographer
mailing and physical address
600 4th Street South
St. Petersburg
FL
33701
USA
727 502-8132
dzawada@usgs.gov
M-F, 9:00-5:00 ET
Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
local time