Recent sediments of the Monterey Bay, California

Metadata:

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

Identification_Information:

Citation:

Citation_Information:

Originator: T.E. Yancey

Publication_Date: 1968

Title: Recent sediments of the Monterey Bay, California

Geospatial_Data_Presentation_Form: Paper

Series_Information:

Series_Name: Hydraulic Engineering Laboratory Technical Report

Issue_Identification: HEL-2-18

Publication_Information:

Publication_Place: Berkeley, CA

Publisher: University of California

Description:

Abstract:

"Sediments of Monterey Bay are divisible into five heavy mineral provinces. Two of the provinces are from the Salinas and Pajaro rivers, the other three are not traceable to any known source. Sediments of the Salinas River have high garnet content, and the minerals glaucophane and lawsonite distinguish the Pajaro River sediments. A mineral province is restricted to beach sands along the north shore of the bay, and is carried into the bay by longshore drift from the northwest. The heavy mineral provinces do not coincide with the age differences of the sediment cover. The San Lorenzo River does not produce a detectable mineral province. The grain size of the sediment cover decreases uniformly with water depth from the shoreline to a depth of 300 feet, then becomes coarser in a band along the edge of the continental shelf. Grain size modes correspond to conditions of wave agitation over most of the bay. Polymodal samples and samples not in agreement with this relationship can be shown to contain relict Pleistocene components. Sediment is being transported seaward from the shorelines by simple wave agitation, and deposited at various water depths according to grain size. The sediment cover occurs in bands that are aligned subparallel to the depth contours. The outermost band on the continental shelf contains coarse sediment of Pleistocene age. The middle band is of very fine grained sediment of Holocene age. The nearshore band is of medium and coarse grained sediment probably of both Holocene and Pleistocene age. Pleistocene influences are found in this band at depths of 100 feet in the northeast corner of the bay."

Purpose:

"The present work is primarily a description of the sediment cover in Monterey Bay and an analysis of the numerous variables controlling the distribution and accumulation of sediment within the bay. Investigation of the following problems has motivated the undertaking of this project and most of the work has been directed toward providing information on them: 1.) describing the marine sediments 2.) determining the provenance of the sediments 3.) determining the geologic history of the sediment cover 4.) determining the processes of sediment transport into and within the bay, and 5.) describing the role of the Monterey Canyon in the transport of sediment from the bay."

Supplemental_Information:

The project was undertaken with the support of the U.S. Army Corps of Engineers as part of their coastal sedimentation projects. Work was undertaken with the cooperation and encouragement of the Department of Geology and the College of Engineering at the Berkeley campus of the University of California, and facilities were provided by both divisions for the work. In addition, Scripps Institution of Oceanography, at La Jolla, California, provided facilities for part of the work and provided samples from several cores taken within Monterey Bay. 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: 1966

Currentness_Reference: Publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -122.207

East_Bounding_Coordinate: -121.795

North_Bounding_Coordinate: 36.970

South_Bounding_Coordinate: 36.710

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: University of California Berkeley

Theme_Keyword: pipe dredge

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: Monterey Bay

Place_Keyword: San Lorenzo River

Place_Keyword: California, State of

Stratum:

Stratum_Keyword_Thesaurus: Geological

Stratum_Keyword: Pleistocene

Stratum_Keyword: Holocene

Access_Constraints: Available at the USGS and other libraries

Use_Constraints:

Cite T.E. Yancey and the University of California, Berkeley as the source of the information

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: University of California

Contact_Address:

Address_Type: Physical

City: Berkeley

State_or_Province: CA

Postal_Code: 94720

Contact_Voice_Telephone: 510-642-3261

Browse_Graphic:

Browse_Graphic_File_Name: HEL2-18

Browse_Graphic_File_Description: Sample distribution with bathymetry and coastline for reference

Browse_Graphic_File_Type: .jpg

Data_Set_Credit:

T. E. Yancey at the University of California Berkeley for the collection and analysis of data. For inclusion into usSEABED: Digitization: Jennifer Mendonca (USGS); 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

Cross_Reference:

Citation_Information:

Originator: T. Yancey

Originator: P. Wilde

Publication_Date: 1971

Title: Recent sediments of Monterey Bay: Additional mineralogical data

Geospatial_Data_Presentation_Form: paper

Series_Information:

Series_Name: Hydraulic Engineering Laboratory Technical Report

Issue_Identification: HEL-2-33

Publication_Information:

Publication_Place: Berkeley, CA

Publisher: University of California

Other_Citation_Details:

Graphical representation of heavy mineral analyses of beach samples; not included in usSEABED.

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 phi-size classes and statistical values.

Completeness_Report:

Beach and river samples 1892-1978 were not digitized and are not included in usSEABED.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

No navigational information is given in the report. Latitude/longitudes are given to minute-tenths.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

No depth-determination technique is given in the report. Depths are given to the nearest five feet.

Lineage:

Process_Step:

Process_Description:

Marine samples were collected by means of a five-inch diameter pipe dredge which was towed a short distance over the sea floor. In the laboratory the samples were divided by sediment splitter into portions for size analysis and mineral analysis, after the removal of a small portion for clay analysis. For mineral analysis, the sample was washed on a 52 micron screen and heavy mineral separations were made of the sand, using bromoform with a density of 2.88 grams per cubic centimeter. Heavy mineral grain mounts were prepared after eliminating mineral grains larger than 500 microns. The sand fraction was analyzed by use of the settling tube at Scripps Insitution of Oceanography...samples were washed and sieved to remove all silt and clay, then split to approximately three grams for each run. A weight cumulative curve is produced from a continuous recording of the weight of the sediment as it settles through a column of water. Quartile measurements, or any other percentage measures, are read directly off the curve by means of an overlay. Silt was analyzed by pipette using the procedure described in chapter 6 of Krumbein and Pettijohn (1938). 100 nonopaque and nonmicaceous mineral grains were identified along line counts in each slide. Biotite, opaque and aggregate grains were tabulated separately.

Source_Used_Citation_Abbreviation: Krumbein and Pettijohn, 1938

Process_Date: 1966

Source_Produced_Citation_Abbreviation: HEL-2-18

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: University of California

Contact_Address:

Address_Type: Physical

City: Berkeley

State_or_Province: CA

Postal_Code: 94720

Contact_Voice_Telephone: 510-642-3261

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: 86

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: Depth

Attribute_Definition: Water depth

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 35

Range_Domain_Maximum: 400

Attribute_Units_of_Measure: Feet

Attribute_Measurement_Resolution: 5

Attribute:

Attribute_Label: Description

Attribute_Definition: Sample description

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Unrepresentable_Domain: Written description

Attribute:

Attribute_Label: Phi size values in sand fraction

Attribute_Definition: Phi size values in sand fraction

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -1.0

Range_Domain_Maximum: 4.0

Attribute_Units_of_Measure: Phi

Attribute_Measurement_Resolution: 0.25

Attribute:

Attribute_Label: Q1

Attribute_Definition: Quartile value of sand fraction at 25 percent

Attribute_Definition_Source: Krumbein and Pettijohn, 1938

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.264

Range_Domain_Maximum: 3.51

Attribute_Units_of_Measure: Phi

Attribute_Measurement_Resolution: 0.001

Attribute:

Attribute_Label: Q2

Attribute_Definition: Quartile value of sand fraction at 50 percent

Attribute_Definition_Source: Krumbein and Pettijohn, 1938

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1.21

Range_Domain_Maximum: 3.69

Attribute_Units_of_Measure: Phi

Attribute_Measurement_Resolution: 0.001

Attribute:

Attribute_Label: Q3

Attribute_Definition: Quartile value of sand fraction at 75 percent

Attribute_Definition_Source: Krumbein and Pettijohn, 1938

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.377

Range_Domain_Maximum: 3.85

Attribute_Units_of_Measure: Phi

Attribute_Measurement_Resolution: 0.001

Attribute:

Attribute_Label: Sorting

Attribute_Definition: Sand sorting

Attribute_Definition_Source: Krumbein and Pettijohn, 1938

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.17

Range_Domain_Maximum: 0.845

Attribute_Units_of_Measure: Phi

Attribute_Measurement_Resolution: 0.001

Attribute:

Attribute_Label: Skewness

Attribute_Definition: Sand skewness

Attribute_Definition_Source: Krumbein and Pettijohn, 1938

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -0.145

Range_Domain_Maximum: +0.495

Attribute_Units_of_Measure: Unitless

Attribute_Measurement_Resolution: 0.005

Attribute:

Attribute_Label: Mode

Attribute_Definition: Sand mode

Attribute_Definition_Source: Krumbein and Pettijohn, 1938

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.1

Range_Domain_Maximum: 3.70

Attribute_Units_of_Measure: Phi

Attribute_Measurement_Resolution: 0.005

Attribute:

Attribute_Label: Green hornblende

Attribute_Definition: Amount of mineral in sample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 100

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Brown hornblende

Attribute_Definition: Amount of mineral in sample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 100

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Oxyhornblende

Attribute_Definition: Amount of mineral in sample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 100

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Augite

Attribute_Definition: Amount of mineral in sample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 100

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Augite

Attribute_Definition: Amount of mineral in sample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 100

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Hypersthene

Attribute_Definition: Amount of mineral in sample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 100

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Epidote

Attribute_Definition: Amount of mineral in sample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 100

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Garnet

Attribute_Definition: Amount of mineral in sample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 100

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Sphene

Attribute_Definition: Amount of mineral in sample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 100

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Zircon

Attribute_Definition: Amount of mineral in sample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 100

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Apatite

Attribute_Definition: Amount of mineral in sample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 100

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Clinozoisite

Attribute_Definition: Amount of mineral in sample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 100

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Detrital carbonate

Attribute_Definition: Amount of mineral in sample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 100

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Glaucophane

Attribute_Definition: Amount of mineral in sample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 100

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Lawsonite

Attribute_Definition: Amount of mineral in sample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 100

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Jadeite

Attribute_Definition: Amount of mineral in sample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 100

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Tourmaline

Attribute_Definition: Amount of mineral in sample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 100

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Andalusite

Attribute_Definition: Amount of mineral in sample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 100

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Sillimanite

Attribute_Definition: Amount of mineral in sample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 100

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Ataurolite

Attribute_Definition: Amount of mineral in sample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 100

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Biotite

Attribute_Definition: Amount of mineral in sample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 100

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Organic carbonate

Attribute_Definition: Amount of mineral in sample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 100

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Composites - opaques

Attribute_Definition: Amount of mineral in sample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 100

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 1

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: University of California

Contact_Address:

Address_Type: Mail

Address: Department of Civil and Environmental Engineering

Address: 760 Davis Hall

City: Berkeley

State_or_Province: CA

Postal_Code: 94720-1710

Contact_Voice_Telephone: 510-642-3261

Resource_Description: HEL Report 2-18

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

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: Hel2- 18

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: 1995

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.