Identification_Information: Citation: Citation_Information: Originator: Donn S. Gorsline Publication_Date: 1958 Title: Marine geology of San Pedro and Santa Monica Basins and vicinity, California Geospatial_Data_Presentation_Form: Paper Publication_Information: Publication_Place: Los Angeles, CA Publisher: University of Southern California Other_Citation_Details: Support from the California Research Corporation to K.O. Emery. Ship, office, and laboratory facilities support from the Allan Hancock Foundation. Description: Abstract: No formal abstract is given. Purpose: "It is evident...that the study of the source of basin sediments in a modern basin in a fairly well known area can be a most valuable contribution. Information of this type is of prime importance in working with the economic deposits of ancient basins, and it implements the related studies of basin-sediment characteristics and organic accumulation. It can also form a basis for the development of a systematic picture of the evolution of basin-sediment types, and of the stages in the development of the associations of these various types in time. For such a study the San Pedro and Santa Monica Basins are ideal. They represent basins in an intermediate stage of fill, bordered by areas whose characteristics are quite well known, and they are easily accessible. In addition, they are part of a basin and range area, which offers examples of basins of similar size, origin, and history, and in various stages of that history. It was for these reasons that the two basins were chosen as subjects for the present study." Supplemental_Information: All stations were occupied with the University of Southern California's Research Vessel, Velero IV. Data digitized by the USGS for inclusion into usSEABED (http://walrus.wr.usgs.gov/usseabed) Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1958 Currentness_Reference: Publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -119.904 East_Bounding_Coordinate: -118.097 North_Bounding_Coordinate: 34.064 South_Bounding_Coordinate: 33.019 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: University of Southern California Theme_Keyword: Allan Hancock Foundation Theme_Keyword: Piston core Theme_Keyword: Gravity core Theme_Keyword: Hayward grab Theme_Keyword: Campbell grab Theme_Keyword: Dietz-Emery 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: Biogenic Sediments Theme_Keyword: Sediment Chemistry 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: Continental Place_Keyword: Borderland Place_Keyword: San Pedro Basin Place_Keyword: Santa Monica Basin Access_Constraints: None. Report is available at the USGS Library and other libraries. Use_Constraints: Cite Donn S. Gorsline and the University of Southern California as originators of the data. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Donn S. Gorsline Contact_Organization: University of Southern California Contact_Address: Address_Type: Physical Address: Zumberge Hall Address: 3651 Trousdale Parkway City: Los Angeles State_or_Province: CA Postal_Code: 90089 Contact_Voice_Telephone: 213- 740-5125 Contact_Electronic_Mail_Address: gorsline@earth.usc.edu Browse_Graphic: Browse_Graphic_File_Name: Gorsline_PhD_1958 Browse_Graphic_File_Description: Sample distribution with coastline and bathymetry for reference. Browse_Graphic_File_Type: .jpg Data_Set_Credit: Donn S. Gorsline at the University of Southern California for the collection and analysis of data. For inclusion into usSEABED: digitization: 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: Locations, descriptions, statistical data were digitized by hand (typed in), visually compared to source and corrected as needed. Where appropriate, data were tested for completeness using MS Excel. Locations checked using GIS. Logical_Consistency_Report: Data fall within normal ranges for analytical results. Completeness_Report: For usSEABED, appendices 1,2, and 3 were completely digitized, except pages 262 and 285. Some information from the report text is also included in usSEABED. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Navigational techniques not noted in the report. Locations given to minutes, seconds. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Depth determination techniques not noted in the report. Locations given to nearest fathom. Lineage: Process_Step: Process_Description: "Surface sediment samples were split in the laboratory and their size parameters determined. In several instances, one cut was given to geochemists of the Allan Hancock Foundation staff for special organic analyses. Carbonate content was also determined for this sample series by the chemists. The sands (coarse fractions) of the sampler were classified using a heavy liquid medium (acetylene tetrabromide, sp. Gr. About 2.9) and the composition of the fractions was then determined by stain techniques and by microscopical examination (LeRoy, 1949; Twenhofel and Tyler, 1941). ... Because of the large number of samples studied (more than 1,200), the writer made many modifications of the standard techniques(Krumbein and Pettijohn, 1941). These modifications include partial textural analyses (Plumley and Davis, 1956), visual composition estimates of coarse fractions (Shepard and Moore, 1954), and comparative techniques after the basic principles discussed (Emery and Gould, 1948). In all textural analyses and computations, the parameter defined by Trask were used (Trask, 1932). Source_Used_Citation_Abbreviation: LeRoy, 1949 Source_Used_Citation_Abbreviation: Twenhofel and Tyler, 1941 Source_Used_Citation_Abbreviation: Krumbein and Pettijohn, 1941 Source_Used_Citation_Abbreviation: Plumley and Davis, 1956 Source_Used_Citation_Abbreviation: Shepard and Moore, 1954 Source_Used_Citation_Abbreviation: Trask, 1932 Source_Used_Citation_Abbreviation: Emery and Gould, 1948 Process_Date: Unknown Source_Produced_Citation_Abbreviation: Gorsline_PhD_1958 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Donn S. Gorsline Contact_Organization: University of Southern California Contact_Address: Address_Type: Physical Address: Zumberge Hall Address: 3651 Trousdale Parkway City: Los Angeles State_or_Province: CA Postal_Code: 90089 Contact_Voice_Telephone: 213- 740-5125 Contact_Electronic_Mail_Address: gorsline@earth.usc.edu 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: 278 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.00028 Longitude_Resolution: 0.00028 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: AHF Sta. # Attribute_Definition: Station number Attribute_Definition_Source: Allan Hancock Foundation Attribute_Domain_Values: Unrepresentable_Domain: Sequential alpha numeric code Attribute: Attribute_Label: Water depth Attribute_Definition: Water depth Attribute_Definition_Source: Source report Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 13 Range_Domain_Maximum: 903 Attribute_Units_of_Measure: Meters Attribute_Measurement_Resolution: 1.0 Attribute: Attribute_Label: Subsample depth Attribute_Definition: Depth of subsample in core Attribute_Definition_Source: Source report Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 5.38 Attribute_Units_of_Measure: Meters Attribute_Measurement_Resolution: 0.01 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: 61.4 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Sand Attribute_Definition: Sand Attribute_Definition_Source: Krumbein and Pettijohn, 1938 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 100 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Silt Attribute_Definition: Silt Attribute_Definition_Source: Krumbein and Pettijohn, 1938 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.4 Range_Domain_Maximum: 89.6 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Clay Attribute_Definition: Clay Attribute_Definition_Source: Krumbein and Pettijohn, 1938 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.7 Range_Domain_Maximum: 54.4 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Mud Attribute_Definition: Mud Attribute_Definition_Source: Krumbein and Pettijohn, 1938 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 11.5 Range_Domain_Maximum: 99.3 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Median Attribute_Definition: Median grainsize distribution Attribute_Definition_Source: Source report Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.74 Range_Domain_Maximum: 8.38 Attribute_Units_of_Measure: Phi Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Sorting Attribute_Definition: Standard deviation of grainsize distribution (sorting) Attribute_Definition_Source: Trask, 1932 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.26 Range_Domain_Maximum: 7.3 Attribute_Units_of_Measure: Phi Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Q1 Attribute_Definition: First quartile of grainsize distribution Attribute_Definition_Source: Trask, 1932 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.79 Range_Domain_Maximum: 6.64 Attribute_Units_of_Measure: Phi Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Q3 Attribute_Definition: Third quartile of grainsize distribution Attribute_Definition_Source: Trask, 1932 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.94 Range_Domain_Maximum: 10.2 Attribute_Units_of_Measure: Unitless Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: CaCO3 Attribute_Definition: CaCO3 in sample Attribute_Definition_Source: Source report Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.8 Range_Domain_Maximum: 9 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Nitrogen Attribute_Definition: Nitrogen in sample Attribute_Definition_Source: Source report Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.042 Range_Domain_Maximum: 0.441 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: Petrographic analyses Attribute_Definition: Petrographic analyses Attribute_Definition_Source: Source report Attribute_Domain_Values: Unrepresentable_Domain: Percents of foraminifera, detrital grains, and mica; grain counts of plagioclase, potash-feldspar, calcite, and quartz. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: University of Southern California Contact_Address: Address_Type: Physical Address: Zumberge Hall Address: 3651 Trousdale Parkway City: Los Angeles State_or_Province: CA Postal_Code: 90089 Contact_Voice_Telephone: 213-740-6106 Resource_Description: Gorsline PhD 1958 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. Fees: None Technical_Prerequisites: None Available_Time_Period: Time_Period_Information: Single_Date/Time: Calendar_Date: 1958 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.