Lithology of the sea floor off southern California

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: K.O. Emery

Originator: F.P. Shepard

Publication_Date: 1945

Title: Lithology of the sea floor off southern California

Geospatial_Data_Presentation_Form: Paper

Series_Information:

Series_Name: Bulletin of the Geological Society of America

Issue_Identification: Volume 56, pp. 431-473

Publication_Information:

Publication_Place: Los Angeles, CA

Publisher: University of Southern California Press

Other_Citation_Details:

Financed by the Penrose Bequest of the Geological Society of America, and through the cooperation of the Scripps Institution of Oceanography. Assistance in the preparation of these materials was furnished by personnel of the Works Progress Administration (Official Projects 465-03-3-403 and 665-07-3-141) and the National Youth Administration.

Description:

Abstract:

"Rocks obtained from the sea floor off the southern California coast principally during the 1938 cruises of the E.W. Scripps have been studied in the laboratory, and the petrographic character and fossil content determined. Rock was obtained from 132 localities in such environments as the narrow continental shelf, escarpments, hills, and the walls of submarine canyons. Large size, angularity, quantity of fragments in a single haul, and the presence of fresh fractures suggest that many of the samples are representative of the bedrock outcropping at the sampling locality. The material recovered includes sedimentary, igneous, and metamorphic types. Ages were determined partly by fossil content and partly by lithological comparison with rocks outcropping on adjacent land. Triassic-Jurassic, Cretaceous, Eocene, Miocene, and Pliocene are all represented, with Miocene rocks by far the most common. The igneous rocks are predominantly andesite, although some basalt was found. The chief conclusion from this reconnaissance work is that, aside from the abundance of phosphorite, the submerged basin and range province off the southern California coast is remarkably similar lithologically to that of the bordering land areas."

Purpose:

"...Enough material is available to give a very general idea of the distribution of the rock formations on the ocean floor off southern California."

Supplemental_Information:

Data are included in the Deck41 compilation held at NGDC; samples in that compilation have been decommissioned in usSEABED. 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: 1935

Ending_Date: 1939

Currentness_Reference: Publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -119.932

East_Bounding_Coordinate: -117.257

North_Bounding_Coordinate: 34.142

South_Bounding_Coordinate: 32.379

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: Geological Society of America

Theme_Keyword: Bucket dredge

Theme_Keyword: Pipe dredge

Theme_Keyword: Gravity core

Theme_Keyword: Snapper

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: Terrigenous Sediments

Place:

Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)

Place_Keyword: California

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: Continental

Place_Keyword: Borderland

Temporal:

Temporal_Keyword_Thesaurus: Geologic

Temporal_Keyword: Triassic-Jurassic

Temporal_Keyword: Cretaceous

Temporal_Keyword: Eocene

Temporal_Keyword: Miocene

Temporal_Keyword: Pliocene

Access_Constraints: None. Report is available at libraries.

Use_Constraints: Cite K.O. Emery and F.P. Shepard as originators of the data.

Point_of_Contact:

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

Contact_Electronic_Mail_Address: earthsci@usc.edu

Browse_Graphic:

Browse_Graphic_File_Name: EmeryShepard_1941

Browse_Graphic_File_Description:

Sample distribution with coastline and bathymetry for reference.

Browse_Graphic_File_Type: .jpg

Data_Set_Credit:

Digitization: K.O. Emery and F.P. Shepard at the University of Southern California for the collection and analysis of data. For inclusion into usSEABED: 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 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: None available

Completeness_Report: The appendix was completely digitized.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Navigational technique not given in paper. Positions given to tenths of minutes.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

Depth determination technique not given in paper. Depths given in feet.

Lineage:

Process_Step:

Process_Description:

No information is given on the processing of the samples. Only simple descriptions are included in the report

Process_Date: Unknown

Source_Produced_Citation_Abbreviation: Emery_&_Shepard_1941

Process_Contact:

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

Contact_Electronic_Mail_Address: earthsci@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: 132

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: Station number

Attribute_Definition: Station number

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Unrepresentable_Domain: 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: 16

Range_Domain_Maximum: 3145

Attribute_Units_of_Measure: Meters

Attribute_Measurement_Resolution: 1.0

Attribute:

Attribute_Label: Lithologic description

Attribute_Definition: Sample descriptions

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Unrepresentable_Domain:

Written text: Sample descriptions contain locations, depth, sampler type, sample location description, transported or outcrop, rock type, number of pieces, maximum diameter (in centimeters), shape, color, notes (description), lithologic affinities, and age of enclosed fossils, including fossil type.

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: The Geological Society of America

Contact_Address:

Address_Type: Mail

Address: P.O. Box 9140

City: Boulder

State_or_Province: CO

Postal_Code: 80301-9140

Contact_Voice_Telephone: 303-447-2020

Contact_Electronic_Mail_Address: gsaservice@geosociety.org

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.

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: 1945

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.