Identification_Information: Citation: Citation_Information: Originator: Suleyman Demirpolat Publication_Date: 1981 Title: Holocene stratigraphy and sedimentation on the northern California continental shelf Geospatial_Data_Presentation_Form: Paper Publication_Information: Publication_Place: Seattle, WA Publisher: University of Washington Other_Citation_Details: Master's thesis Description: Abstract: Not noted Purpose: "The purpose of this study was (1) to describe the areal distribution of the sediments and their textural variation, and use these variations as indicators of sedimentary processes on the continental shelf, and (2) to distinguish the modern and relict characteristics of the northern California continental shelf." Supplemental_Information: Data digitized by the USGS for inclusion into usSEABED (http://walrus.wr.usgs.gov/usseabed) Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1979 Ending_Date: 1981 Currentness_Reference: Publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -123.750 East_Bounding_Coordinate: -123.052 North_Bounding_Coordinate: 38.800 South_Bounding_Coordinate: 38.062 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: University of Washington, Seattle Theme_Keyword: Piston core Theme_Keyword: Box core 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 Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: California Place_Keyword: Russian River Access_Constraints: None. Thesis is available at the USGS Library and other libraries. Use_Constraints: Cite Suleyman Demirpolat and the University of Washington as originators of the data. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: University of Washington Contact_Address: Address_Type: Mail Address: P.O. Box 357940 Address: University of Washington City: Seattle State_or_Province: WA Postal_Code: 98195 Contact_Voice_Telephone: 206-543-5060 Browse_Graphic: Browse_Graphic_File_Name: Demirpolat_MS_1981 Browse_Graphic_File_Description: Sample distribution with coastline and bathymetry for reference. Browse_Graphic_File_Type: .jpg Data_Set_Credit: For usSEABED: Suleyman Demirpolat at the University of Washington for the collection and analysis of data. For inclusion into usSEABED: Digitization: K. Halimeda Kilbourne and Jennifer Mendonca (USGS) and Mark Zimmermann (NOAA) 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 the accuracy of the data in the original report. Data digitized by the USGS and partners were visually compared to the source data, and corrected. Where appropriate, data were tested for completeness using MS Excel. Locations checked using GIS. Logical_Consistency_Report: Data fall within normal ranges for the given parameters. One typo of light mineral percentage was changed in usSEABED from 44.65% to 94.65% to be consistent with other measurements. Completeness_Report: All appendices (1 through 5) were digitized. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Navigation method unknown; no assessment made for location accuracy. Locations given to degrees minutes, tenths Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Depth determination method unknown; no assessment made for accuracy. Depths given in meters Lineage: Process_Step: Process_Description: For textural analyses, the coarse sediment (greater than 0.062 mm) was dry sieved using 1/4 phi interval sieves and then weighed. The fine sediment (separated from the coarse sediment by wet-sieving) was pipetted on 1/2 phi intervals for the silt fraction and 1 phi-unit intervals for the clay. A split of 2-3 grams of the bulk sand fraction was used for heavy mineral analysis. Bromoform (sp. Gravity = 2.85 g/cm3) was added, centrifuged, filtered and rinsed. Magnetic minerals were separated using a hand magnet,and grain mounts were examined using a petrographic microscope; only the selected heavy minerals were counted. Clays were collected by repeated sedimentation and decantation using Millipore filters and glass slides. X-Ray diffraction was done on a Norelco diffractometer with a scintillation detector using copper k-alpha radiation and 40 kv and 20 ma and a graphite Monochrometer Process_Date: Unknown Source_Produced_Citation_Abbreviation: Demirpolat_MS_1981 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: University of Washington Contact_Address: Address_Type: Mail Address: P.O. Box 357940 Address: University of Washington City: Seattle State_or_Province: WA Postal_Code: 98195 Contact_Voice_Telephone: 206-543-5060 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Entity point Point_and_Vector_Object_Count: 26 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.00167 Longitude_Resolution: 0.00167 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: University of Washington Attribute_Domain_Values: Unrepresentable_Domain: Alpha numeric code based on cruise identification and sample number. Attribute: Attribute_Label: Sampler Attribute_Definition: Sampler type Attribute_Definition_Source: Source report Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Gr Enumerated_Domain_Value_Definition: Grab sample Enumerated_Domain_Value_Definition_Source: Source report Enumerated_Domain: Enumerated_Domain_Value: Bx Enumerated_Domain_Value_Definition: Box core sample Enumerated_Domain_Value_Definition_Source: Source report Enumerated_Domain: Enumerated_Domain_Value: Ps Enumerated_Domain_Value_Definition: Piston core Enumerated_Domain_Value_Definition_Source: Source report Attribute: Attribute_Label: Water depth Attribute_Definition: Water depth Attribute_Definition_Source: Source report Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 33 Range_Domain_Maximum: 154 Attribute_Units_of_Measure: Meters Attribute_Measurement_Resolution: 1.0 Attribute: Attribute_Label: Gravel Attribute_Definition: Gravel Attribute_Definition_Source: Krumbein and Pettijohn, 1938 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 19.15 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Sand Attribute_Definition: Sand Attribute_Definition_Source: Krumbein and Pettijohn, 1938 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3.75 Range_Domain_Maximum: 90.78 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Silt Attribute_Definition: Silt Attribute_Definition_Source: Krumbein and Pettijohn, 1938 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 5.85 Range_Domain_Maximum: 76.25 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Clay Attribute_Definition: Clay Attribute_Definition_Source: Krumbein and Pettijohn, 1938 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.21 Range_Domain_Maximum: 45.99 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Mode Attribute_Definition: Mode of grainsize distribution Attribute_Definition_Source: Source report Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.75 Range_Domain_Maximum: 9.0 Attribute_Units_of_Measure: Phi Attribute_Measurement_Resolution: 0.25 Attribute: Attribute_Label: Median Attribute_Definition: Median grainsize Attribute_Definition_Source: Inman, 1952 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3.01 Range_Domain_Maximum: 7.64 Attribute_Units_of_Measure: Phi Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Mean Attribute_Definition: Mean grainsize Attribute_Definition_Source: Inman, 1952 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.59 Range_Domain_Maximum: 7.6 Attribute_Units_of_Measure: Phi Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Sorting Attribute_Definition: Standard deviation of grainsize Attribute_Definition_Source: Inman, 1952 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.21 Range_Domain_Maximum: 3.71 Attribute_Units_of_Measure: Phi Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: First skewness Attribute_Definition: First skewness of grainsize Attribute_Definition_Source: Inman, 1952 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.44 Range_Domain_Maximum: 0.9 Attribute_Units_of_Measure: Unitless Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Second skewness Attribute_Definition: Second skewness of grainsize Attribute_Definition_Source: Inman, 1952 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.28 Range_Domain_Maximum: 6.36 Attribute_Units_of_Measure: Unitless Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Kurtosis Attribute_Definition: Kurtosis of grainsize distribution Attribute_Definition_Source: Inman, 1952 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.61 Range_Domain_Maximum: 6.44 Attribute_Units_of_Measure: Unitless Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Light minerals in sand fraction Attribute_Definition: Minerals in sand fraction with density < 2.85 g/cm3 Attribute_Definition_Source: Source report Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 90.5 Range_Domain_Maximum: 98.6 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Magnetic minerals in sand fraction Attribute_Definition: Minerals in sand fraction attracted to hand magnet of unknown strength. Attribute_Definition_Source: Source report Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.07 Range_Domain_Maximum: 1.1 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Heavy minerals in sand fraction Attribute_Definition: Minerals in sand fraction with density > 2.85 g/cm3 Attribute_Definition_Source: Source report Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.24 Range_Domain_Maximum: 8.8 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Mineral identification heavy minerals Attribute_Definition: Mineral identification in heavy mineral portion of sand fraction Attribute_Definition_Source: Source report Attribute_Domain_Values: Unrepresentable_Domain: Percents of biotite, glauconite, glaucophane, hornblende, and unidentified heavy minerals. Attribute: Attribute_Label: Mineral identification; clay minerals Attribute_Definition: Mineral identification in clay portion Attribute_Definition_Source: Source report Attribute_Domain_Values: Unrepresentable_Domain: Percents of chlorite, illite, kaolinite, montmorillonite. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: University of Washington Contact_Address: Address_Type: Mail Address: P.O. Box 357940 Address: University of Washington City: Seattle State_or_Province: WA Postal_Code: 98195 Contact_Voice_Telephone: 206-543-5060 Resource_Description: depends on library 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 at libraries and the University of Washington. Fees: None Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: Mail and physical Address: 345 Middlefield Road City: Menlo Park State_or_Province: CA Postal_Code: 94025 Contact_Voice_Telephone: 650.329.5026 Contact_Electronic_Mail_Address: men_lib@usgs.gov Resource_Description: Demirpolat MS thesis 1981 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 the limitations of the data due to possible imprecision due to navigational inaccuracies, statistical limitations, and digitizing errors. Standard_Order_Process: Non-digital_Form: Report is available for viewing or checkout at the USGS library, Menlo Park, and at other libraries. Fees: None Technical_Prerequisites: None Available_Time_Period: Time_Period_Information: Single_Date/Time: Calendar_Date: 1985 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.