U.S. Geological Survey
Unpublished material
Sediment sample information from USGS Cruise S297SC
Paper
http://walrus.wr.usgs.gov/infobank/s/S297SC/html/s-2-97-sc.meta.html
No formal abstract is given.
No purpose is given.
Data included in usSEABED (http://walrus.wr.usgs.gov/usseabed)
19970603
19970606
Publication date
None planned
-118.77200
-118.42707
34.02260
33.83327
ISO 19115 Topic Category
Oceans and Estuaries
Location
GeoscientificInformation
NASA/Global Change Master Directory (GCMD) Earth Science Keyword. Version 5.3.3
Marine Sediments
Biogenic Sediments
Sediment Chemistry
Sediment Composition
Sedimentary Structures
Sedimentary Textures
Stratigraphic Sequence
Terrigenous Sediments
None
U.S. Geological Survey
Branch of Pacific Marine Geology
Coastal and Marine Geology Program
Box core
Geographic Names Information System
San Monica Bay
California
Information is available online.
Cite the U.S. Geological Survey as the originators of the data.
U.S. Geological Survey
Brian D. Edwards
Mail
Coastal and Marine Geology
345 Middlefield Road
Menlo Park
CA
94025
1-650-329-5458
Cruise_S297SC
Screen grab of GIS-produced sample distribution, with bathymetry and land for reference.
JPG
Brian Edwards and other members of the Coastal and Marine Geology team at the USGS for collection and analysis of data. For usSEABED, formatting: K. Halimeda Kilbourne (USGS); Formatting corrections: Jane Reid (USGS) and Chris Jenkins (University of Colorado)
Tkme: Another editor for formal metadata by Peter N. Schweitzer (U.S. Geological Survey, Reston, VA 22092), version 2.9.13, Microsoft Windows Version 5.1; Microsoft Word 2000 9.0
No assessment made for the original data. For usSEABED, all data were included. Where appropriate, data were tested for completeness using MS Excel. Locations checked using GIS.
Data fall within normal ranges for the given parameters.
No estimate made for original data. For inclusion into usSEABED, all textural data in the report were included.
Navigation during all cruises was by GPS.
Water depth determination probably by 3.5 kHz profiling systems. Subsample depths given as nearest centimeter.
No specific information is available for cores from this cruise. General analytical techniques for the USGS Menlo Park Sediment Laboratory: Initial splits into size fractions by wet sieving using A.S.T.M. #10 (2mm) and A.S.T.M. #230 (0.063 mm) sieves.
Fraction specific techniques for particle size analysis: for the coarse fraction (> 2.0 mm) is by sieve analysis and the medium fraction (2-0.063 mm) by settling tube.
The fine fraction (<0.062 mm) is by pipette (Folk, 1968; Carver, 1971), hydrophotometer (Jordan and others, 1971), laser-diffraction (Beckman Coulter), or Sedigraph (Micromeretics), or combinations thereof. Settling tubes are modifications of those described by Theide, Chriss, Clauson and Swift, 1976 and are calibrated using Gibbs, 1971.
Since 1998, the fine fraction (silt and clay), and occasionally up to 1 mm, is usually analyzed by the Beckman Coulter LS100Q (1 mm - 0.4 microns) and the LS230 (2 mm to 40 nanometers).
Between 1993 and 1998, the fine fraction (0.063 mm to 1 micron) was generally analyzed by SediGraph (Micromeretics 5100.
Between 1976 and 1995, the fine fraction was generally analyzed by hydrophotometer (Jordan and others, 1971).
Data reduction, size analysis, and statistics performed by the SDSZ computer program (McHendrie, 1988).
Carbon analyses by UIC Coulometrics (Joliet, IL) carbon analyzers, using protocols described in the UIC CM5012 and 5014 Coulometer instruction manuals (systems CM130, CM150, or CM250). Total carbon (TC) and total inorganic carbon (TIC) are determined by coulometric titration using Coulometer coupled to an acidification module and furnace apparatus. TC and TIC analyses are conducted separately on sediment samples. TC content is measured by combusting a sample (~20 mg) in a furnace preheated to 1000 degrees C until no more CO2 is evolved (~ five minutes). TIC content is measured using a heated perchloric acid digestion until no more CO2 is evolved (~ five minutes). Total organic carbon (TOC) content in sediments is calculated by difference (TOC = TC - TIC).
For a description of USGS CMG lab procedures, see the Lab Analysis Section in: http://walrus.wr.usgs.gov/reports/ofr91-375/
Carver, R. E., 1971, Procedures in Sedimentary Petrography: New York, John Wiley and Sons, 653 p.
Folk, R. L., 1968, Petrology of Sedimentary Rocks: Austin, University of Texas Publication, 170 p.
Gibbs, R.J., 1972, The accuracy of particle-size analyses utilizing settling tubes: Journal of Sedimentary Petrology, v. 42, p. 141-145.
Gibbs, R.L., Matthews, M.D., and Link, D.A.,1971,The relationship between sphere size and settling velocity Journal of Sedimentary Research; March 1971; v. 41; no. 1; p. 7-18
Jordan, F.J., Jr., Fryer, G.E., and Elze, H.H., 1971, Size analysis of silt and clay by hydrophotometer: Jour. Sedimentary Petrology, v. 41, p. 489-496
McHendrie, G., 1988, sdsz - A Program for Sediment Size Analysis: U.S. Geological Survey, Branch of Pacific Marine Geology, Menlo Park, CA.
Micromeretics SediGraph 5100 instruction manual
Syvitski, James P., Principles, Methods, and Application of Particle Size Analysis, Cambridge University Press, Cambridge, 1991.
Thiede, J., Chriss, T., Clauson, M., and Swift, S.A., 1976, Settling tubes for size analysis of fine and coarse fractions of oceanic sediments: School of Oceanography, Oregon State University, Reference 76-8, 87 p.
UIC Coulometrics, Instruction manuals for carbon analyzer models UIC CM5012 or CM250, Joliet, IL
1997
Cruise_S297SC
U.S. Geological Survey
Michael Torresan
Mail
USGS Coastal and Marine Geology
345 Middlefield Road, MS 999
Menlo Park
CA
94025
650-329-5493
mtorresan@usgs.gov
Vector
Point
29
0.00001
0.00001
Decimal degrees
Point
SDTS point
Source data
Sample number
Sample number
US Geological Survey
Alpha numeric number based on cruise and core information
Water depth
Depth of water at sample site
Source data
16
182
Meters
1.0
Gravel
Gravel
Wentworth, 1932
0
1.38
Percent
0.01
Sand
Sand
Wentworth 1932
8.85
90.61
Percent
0.01
Silt
Silt
Wentworth 1932
8.92
78.8
Percent
0.01
Clay
Clay
Wentworth 1932
0.47
27.07
Percent
0.01
Mud
Mud
Wentworth 1932
9.39
91.15
Percent
0.01
Median
Median grainsize
Source data
2.54
5.9
Phi
0.01
Mean
First moment measure: mean of grain size
Source data
3.00
6.62
Phi
0.01
Sorting
Second moment measure: standard deviation about the grain size mean
Source data
0.69
3.05
Phi
0.01
Skewness
Third moment measure: skewness of grain size distribution
Source data
0.44
6.06
Unitless
0.01
Kurtosis
Fourth moment measure: kurtosis of grain size distribution
Source data
2.38
61.04
Unitless
0.01
Mean
First moment measure: mean of grain size
Folk and Ward, 1974
3.00
6.62
Phi
0.01
Sorting
Standard deviation about the grain size mean
Folk and Ward, 1974
0.45
3.15
Phi
0.01
Skewness
Skewness of grain size distribution
Folk and Ward, 1974
-0.31
0.79
Unitless
0.01
Kurtosis
Kurtosis of grain size distribution
Folk and Ward, 1974
0.82
2.78
Unitless
0.01
Mean
Mean of grain size distribution
Inman, 1952
3.06
6.86
Phi
0.01
Sorting
Standard deviation about the grain size mean
Inman, 1952
0.39
3.3
Phi
0.01
First skewness
First skewness of grain size distribution
Inman, 1952
-0.58
3.3
Unitless
0.01
Second skewness
Second skewness of grain size distribution
Inman, 1952
-0.07
2.24
Unitless
0.01
Kurtosis
Kurtosis of grain size distribution
Inman, 1952
0.42
1.75
Unitless
0.01
Granulometric measures
Measurement of samples into phi-size bins
Source data
-1
10.5
Percent
0.5
Description
Description of sample
Source data
Verbal description including color
U.S. Geological Survey
Brian D. Edwards
Mail
Coastal and Marine Geology
345 Middlefield Road
Menlo Park
CA
94025
1-650-329-5458
Sediment data from cruise S297SC is available through Brian Edwards at the USGS in Menlo Park; Locations and descriptive data for cruise S297SC are available through the USGS Coastal and Marine Geology Team Infobank website: http://walrus.wr.usgs.gov/infobank/s/s297sc/html/s-2-97-sc.meta.html.
Although this dataset has been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data. Users of the data should be aware of limitations of the data due to possible imprecision due to navigational inaccuracies and limitations of the statistical data.
ASCII
Text
None
1 KB
http://walrus.wr.usgs.gov/infobank/s/S297SC/html/s-2-97-sc.meta.html
None
None
1997
2005
U.S. Geological Survey
Jane A. Reid
Geologist
Physical and mail
400 Natural Bridges Drive
Santa Cruz
CA
95060
831-427-4727
jareid@usgs.gov
Email preferred
CSDGM Version 2
FGDC-STD-001-1998
None
Metadata was written by a user of the data. Any information contained in the physical report is authoritative and supercedes any information given here.