Identification_Information: Citation: Citation_Information: Originator: H.A. Karl Originator: D. E. Drake Originator: W.C. Schwab Originator: B.D. Edwards Originator: H.J. Lee Originator: J.L. Chin Publication_Date: 19901101 Title: Progress report on status of analysis and interpretation of data collected on cruises F7-90-NC and F8-90-NC, Farallon Escarpment, 19 July to 3 August and 5 to 17 August, 1990 Geospatial_Data_Presentation_Form: Paper Series_Information: Series_Name: USGS Woods Hole Science Center Report Issue_Identification: WHSC 90027 Publication_Information: Publication_Place: Woods Hole, MA 02543 Publisher: U.S. Geological Survey Other_Citation_Details: Data from USGS cruises F790NC (http://walrus.wr.usgs.gov/infobank/f/f790nc/html/f-7-90-nc.meta.html) and F890NC (http://walrus.wr.usgs.gov/infobank/f/f890nc/html/f-8-90-nc.meta.html Online_Linkage: http://quashnet.er.usgs.gov/data/1990/90027/archive/index.html Description: Abstract: No formal abstract is given in the report. Purpose: "This report is the first of two interim reports to be submitted prior to the final report (due August 1991) that describe the progress of the analysis of data collected on the Farallon Escarpment.... In this report, we describe (1) the sidescan sonar mosaic,(2) examples of the high-resolution seismic-reflection profiles, (3) the surficial grain-size data, and (4) some of the physical properties of the sediment as determined by geotechnical analyses." Supplemental_Information: Data digitized in 2004 for inclusion into usSEABED (http://walrus.wr.usgs.gov/usseabed) Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19900719 Ending_Date: 19900817 Currentness_Reference: Publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -123.4182 East_Bounding_Coordinate: -122.9057 North_Bounding_Coordinate: 37.5275 South_Bounding_Coordinate: 37.1660 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: Oceans and Estuaries Theme_Keyword: Location Theme_Keyword: GeoscientificInformation Theme: Theme_Keyword_Thesaurus: NASA/Global Change Master Directory (GCMD) Earth Science Keyword. Version 5.3.3 Theme_Keyword: Marine Sediments Theme_Keyword: Sediment Composition Theme_Keyword: Sedimentary Structures Theme_Keyword: Sedimentary Textures Theme_Keyword: Terrigenous Sediments Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: U.S. Geological Survey Theme_Keyword: Office of Marine Geology Theme_Keyword: Coastal and Marine Geology Program Theme_Keyword: Gravity core Place: Place_Keyword_Thesaurus: Geographic Names Information System Place_Keyword: Farallon Islands Place_Keyword: California Access_Constraints: None Use_Constraints: Cite the U.S. Geological Survey as the originators of the data. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: United States Geological Survey Contact_Address: Address_Type: Mail Address: USGS Information Services Address: Box 25286 City: Denver State_or_Province: CO Postal_Code: 80225 Contact_Voice_Telephone: 1-800-ASK-USGS Browse_Graphic: Browse_Graphic_File_Name: WHSC_90027 Browse_Graphic_File_Description: Screen grab of GIS-produced sample distribution, with bathymetry and land for reference. Browse_Graphic_File_Type: JPG Data_Set_Credit: H.A. Karl, D. E. Drake, W.C. Schwab, B.D. Edwards, H.J. Lee, J.L. Chin at the United States Geological Survey for the collection and analysis of data. For usSEABED, formatting: Jane Reid (USGS); Formatting corrections: Jane Reid (USGS) and Chris Jenkins (University of Colorado) Native_Data_Set_Environment: 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 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: No estimate made for original report. For usSEABED, data were digitized (typed in), compared to original and corrected as needed. Where appropriate, data were tested for completeness using MS Excel. Locations checked using GIS. Logical_Consistency_Report: Data fall within expected ranges for the attributes measured. Completeness_Report: No estimate made for original report. For inclusion into usSEABED, all data in the report were included. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Navigation by integrated navigation (Del Norte range-range, GPS, Loran C Rho-Rho); given in decimal degrees (five significant figures). Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Depth determinations by 3.5 kHz, 4.5 kHz, or 10 kHz bathymetric profilers, given to nearest meter. Lineage: Process_Step: Process_Description: 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/ Source_Used_Citation_Abbreviation: Folk, 1968 Source_Used_Citation_Abbreviation: Carver, 1971 Source_Used_Citation_Abbreviation: Jordan and others, 1971 Source_Used_Citation_Abbreviation: Theide, Chris, Clauson and Swift, 1976 Source_Used_Citation_Abbreviation: Gibbs, 1971 Source_Used_Citation_Abbreviation: McHendrie, 1988 Process_Date: Unknown Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 33 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.00001 Longitude_Resolution: 0.00001 Geographic_Coordinate_Units: Decimal degrees Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Point Entity_Type_Definition: SDTS point Entity_Type_Definition_Source: Source report Attribute: Attribute_Label: Sample number Attribute_Definition: Sample number Attribute_Definition_Source: US Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: Alpha numeric number based on cruise and core information Attribute: Attribute_Label: Water depth Attribute_Definition: Depth of sample from surface of water Attribute_Definition_Source: Source report Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 280 Range_Domain_Maximum: 3120 Attribute_Units_of_Measure: Meters Attribute_Measurement_Resolution: 1.0 Attribute: Attribute_Label: Gravel Attribute_Definition: Amount of gravel in subsample Attribute_Definition_Source: Source report Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Sand Attribute_Definition: Amount of sand in subsample Attribute_Definition_Source: Source report Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.07 Range_Domain_Maximum: 91.94 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Silt Attribute_Definition: Amount of silt in subsample Attribute_Definition_Source: Source report Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 6.95 Range_Domain_Maximum: 88.9 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Clay Attribute_Definition: Amount of clay in subsample Attribute_Definition_Source: Source report Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.99 Range_Domain_Maximum: 42.42 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Mud Attribute_Definition: Amount of mud in subsample Attribute_Definition_Source: Source report Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 8.06 Range_Domain_Maximum: 98.93 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Median Attribute_Definition: Median of grain-size distribution Attribute_Definition_Source: Source report Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.07 Range_Domain_Maximum: 7.77 Attribute_Units_of_Measure: Phi Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Mean Attribute_Definition: First moment of grain-size distribution Attribute_Definition_Source: Source report Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.13 Range_Domain_Maximum: 8.3 Attribute_Units_of_Measure: Phi Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Sorting Attribute_Definition: Second moment of grain-size distribution Attribute_Definition_Source: Source report Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.96 Range_Domain_Maximum: 2.3 Attribute_Units_of_Measure: Phi Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Skewness Attribute_Definition: Third moment of grain-size distribution Attribute_Definition_Source: Source report Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.28 Range_Domain_Maximum: 3.3 Attribute_Units_of_Measure: Unitless Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Kurtosis Attribute_Definition: Fourth moment of grain-size distribution Attribute_Definition_Source: Source report Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.71 Range_Domain_Maximum: 23.13 Attribute_Units_of_Measure: Unitless Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Mean Attribute_Definition: Mean of grain-size distribution Attribute_Definition_Source: Folk and Ward, 1974 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.01 Range_Domain_Maximum: 11.4 Attribute_Units_of_Measure: Phi Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Sorting Attribute_Definition: Standard deviation of grain-size distribution Attribute_Definition_Source: Folk and Ward, 1974 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.58 Range_Domain_Maximum: 2.17 Attribute_Units_of_Measure: Phi Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Skewness Attribute_Definition: Skewness of grain-size distribution Attribute_Definition_Source: Folk and Ward, 1974 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.17 Range_Domain_Maximum: 0.72 Attribute_Units_of_Measure: Unitless Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Kurtosis Attribute_Definition: Kurtosis of grain-size distribution Attribute_Definition_Source: Folk and Ward, 1974 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.82 Range_Domain_Maximum: 4.45 Attribute_Units_of_Measure: Unitless Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Mud/sand ratio Attribute_Definition: Mud/sand ratio Attribute_Definition_Source: Source report Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.84 Range_Domain_Maximum: 7.84 Attribute_Units_of_Measure: Unitless Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Shepard classification Attribute_Definition: Classification of sediment on the sand-silt-clay ternary Attribute_Definition_Source: Shepard 1954 Attribute_Domain_Values: Unrepresentable_Domain: Classification of sediment on the sand-silt-clay ternary (sand, silt, clayey silt, silty sand, sandy silt, sand-silt-clay) Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: United States Geological Survey Contact_Address: Address_Type: Mail Address: USGS Information Services Address: Box 25286 City: Denver State_or_Province: CO Postal_Code: 80225 Contact_Voice_Telephone: 1-800-ASK-USGS Resource_Description: Woods Hole Science Center (WHSC) Report 90027 Distribution_Liability: 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. Standard_Order_Process: Non-digital_Form: Report is available through the USGS; available online at: http://quashnet.er.usgs.gov/data/1990/90027/archive/index.html Fees: None Technical_Prerequisites: Adobe Acrobat required: Download: http://www.adobe.com/products/acrobat/readermain.html Available_Time_Period: Time_Period_Information: Single_Date/Time: Calendar_Date: 1990 Metadata_Reference_Information: Metadata_Date: 2005 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Jane A. Reid Contact_Position: Geologist Contact_Address: Address_Type: Physical and mail Address: 400 Natural Bridges Drive City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-427-4727 Contact_Electronic_Mail_Address: jareid@usgs.gov Contact_Instructions: Email preferred Metadata_Standard_Name: CSDGM Version 2 Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: None Metadata_Use_Constraints: Metadata was written by a user of the data. Any information contained in the physical report is authoritative and supercedes any information given here.