Radiocarbon age data from vibracores collected offshore central California, during field activity 2019-651-FA (ver 2.0, August 2023)

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Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: George R. Snyder
Originator: Alicia F. Balster-Gee
Originator: Jared W. Kluesner
Originator: Samuel Y. Johnson
Originator: Elisa Medri
Originator: Alex Simms
Originator: Stu Nishenko
Originator: H. Gary Greene
Originator: James E. Conrad
Publication_Date: 20230908
Title:

Radiocarbon age data from vibracores collected offshore central California, during field activity 2019-651-FA (ver 2.0, August 2023)

Edition: version 2.0
Geospatial_Data_Presentation_Form: CSV format tabular data
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9A0U8J7

Publication_Information:

Publication_Place:

Pacific Coastal and Marine Science Center, Santa Cruz, California

Publisher: U.S. Geological Survey

Online_Linkage: https://doi.org/10.5066/P9A0U8J7
Larger_Work_Citation:

Citation_Information:

Geophysical and core sample data collected offshore central California, during field activity 2019-651-FA (ver 2.0, August 2023)

Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9A0U8J7

Publication_Information:

Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA
Publisher: U.S. Geological Survey

Online_Linkage: https://doi.org/10.5066/P9A0U8J7

Description:

Abstract:

This dataset includes radiocarbon age data from sediment cores collected offshore central California in the vicinity of Morro Bay. These data were collected aboard the M/V Bold Horizon in October 2019 for use in regional hazard assessments relating to the Hosgri Fault.

Purpose:

Identification of fault-related submarine hazards is a primary mission of the USGS Coastal and Marine Hazards and Resources Program. The Hosgri Fault is a submarine fault system that likely poses the greatest submarine earthquake threat in the central California region. To gain a better understanding of this fault system, the USGS collected sparker multichannel seismic, CHIRP seismic, and sediment cores to enable a detailed investigation of its geologic history and ongoing activity. These data are intended to further our understanding of geologic hazards near the Hosgri Fault, improve risk assessments for local communities and critical infrastructure, and to provide data for future research on regional tectonic, sedimentary, and geomorphic evolution of coastal California. This work was funded through a Cooperative Research and Development Agreement (CRADA) between the USGS and Pacific Gas and Electric Corporation.

Supplemental_Information:

Additional information about the field activities from which these data were derived is available online at:
https://cmgds.marine.usgs.gov/fan_info.php?fan=2019-651-FA
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20191018
Ending_Date: 20191024

Currentness_Reference: Ground conditions at time data were collected

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -121.080024
East_Bounding_Coordinate: -121.043532
North_Bounding_Coordinate: 35.477597
South_Bounding_Coordinate: 35.419749

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:f0734c24-26ed-4bcb-8fd2-8246c5f38364

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
Theme_Keyword: geoscientificInformation

Theme:

Theme_Keyword_Thesaurus: Data Categories for Marine Planning
Theme_Keyword: substrate

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: core analysis
Theme_Keyword: coastal processes
Theme_Keyword: geospatial datasets

Theme:

Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme_Keyword: sediment

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Hazards and Resources Program
Theme_Keyword: CMHRP
Theme_Keyword: Pacific Coastal and Marine Science Center
Theme_Keyword: PCMSC

Place:

Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: Pacific Ocean
Place_Keyword: State of California
Place_Keyword: San Luis Obispo County
Place_Keyword: Cayucos
Place_Keyword: Cambria
Place_Keyword: Estero Bay
Place_Keyword: Morro Bay

Place:

Place_Keyword_Thesaurus: NGA GEOnet Names Server (GNS)
Place_Keyword: Diablo Canyon

Access_Constraints: None
Use_Constraints:

USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator(s) of the dataset and in products derived from these data.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

U.S. Geological Survey, Pacific Coastal and Marine Science Center

Contact_Person: PCMSC Science Data Coordinator

Contact_Address:

Address_Type: mailing and physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060

Contact_Voice_Telephone: 831-427-4747
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov

Data_Set_Credit:

USGS PCMSC Marine Facility personnel Rachel Marcuson, Jenny McKee, Cordell Johnson, and Dan Powers led vibracore collection operations.

Cross_Reference:

Citation_Information:

Originator: Minze Stuiver
Originator: Henry A. Polach
Publication_Date: 1977
Title: Discussion: Reporting of 14C data
Other_Citation_Details:

Minze, S., and Polach, H.A., 1977, Discussion: Reporting of 14C data: American Journal of Science, vol. 19, p. 355-363.

Online_Linkage: https://doi.org/10.1017/S0033822200003672

Cross_Reference:

Citation_Information:

Originator: Timothy J. Heaton
Originator: Peter Kohler
Originator: Martin Butzin
Originator: Edouard Bard
Originator: Ron W. Reimer
Originator: William E.N. Austin
Originator: Christopher Bronk Ramsey
Originator: Pieter M. Grootes
Originator: Lonrad A. Hughen
Originator: Bernd Kromer
Publication_Date: 2020
Title:

Marine20—The marine radiocarbon age calibration curve (0-55,000 cal BP)

Other_Citation_Details:

Heaton, T.J., Kohler, P., Butzin, M., Bard, E., Reimer, R.W., Austin, W.E.N., Ramsey, C.B., Grootes, P.M., Hughen, L.A., and Kromer, B., 2020, Marine20—The marine radiocarbon age calibration curve (0-55,000 cal BP): Radiocarbon, vol. 62, p. 779-820.

Online_Linkage: https://doi.org/10.1017/RDC.2020.68

Cross_Reference:

Citation_Information:

Originator: Paula J. Reimer
Originator: William E.N. Austin
Originator: Edouard Bard
Originator: Alex Bayliss
Originator: Paul G. Blackwell
Originator: Christopher Bronk Ramsey
Originator: Martin Butzin
Originator: Hai Cheng
Originator: R. Lawrence Edwards
Originator: Michael Friedrich
Originator: Pieter M. Grootes
Publication_Date: 2020
Title:

The IntCal20 Northern Hemisphere radiocarbon age calibration curve (0–55 cal kBP)

Other_Citation_Details:

Reimer, P.J., Austin, W.E., Bard, E., Bayliss, A., Blackwell, P.G., Ramsey, C.B., Butzin, M., Cheng, H., Edwards, R.L., Friedrich, M., and Grootes, P.M., 2020, The IntCal20 Northern Hemisphere radiocarbon age calibration curve (0–55 cal kBP): Radiocarbon, vol. 62, p.725-757.

Online_Linkage: https://doi.org/10.1017/RDC.2020.41

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Quality control of attribute accuracy was conducted during field data collection and processing workflows.

Logical_Consistency_Report: No formal logical consistency tests were conducted.
Completeness_Report:

Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details.

Lineage:

Process_Step:

Process_Description:

Cores were collected aboard the M/V Bold Horizon using a Rossfelder P-5 vibracorer during U.S. Geological Survey cruise 2019-651-FA. The cores were transported back to the USGS Pacific Coastal and Marine Science Center core lab for subsequent analyses.

Process_Date: 2019

Process_Step:

Process_Description:

Where suitable material was present in important sediment layers, samples were collected and sent to the U.C. Irvine Keck Carbon Cycle Accelerator Mass Spectrometer facility (KCCAMS) for radiocarbon dating. Data reported in the .csv file follow conventions described in Stuiver and Polach (1977).

Process_Date: 20210320
Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Keck Carbon Cycle Accelerator Facility
Contact_Organization: University of California, Irvine

Contact_Address:

Address_Type: mailing and physical
Address: 2222B Croul Hall
City: Irvine
State_or_Province: CA
Postal_Code: 92697

Contact_Voice_Telephone: 949-824-3674
Contact_Electronic_Mail_Address: jsouthon@uci.edu

Process_Step:

Process_Description:

Radiocarbon measurements from KCCAMS were used to calculate calibrated ages depending on the sampled material. Ages obtained from shells were calibrated using the Marine20 calibration curve of Heaton and others (2020) and wood fragments were calibrated using the IntCal20 calibration curve of Reimer and others (2020) within the Calib 8.2 program http://calib.org.

Process_Date: 2022

Process_Step:

Process_Description:

Corrected author/Originator spelling in Citation and Larger Work Citation sections of metadata (Media to Medri). No data were changed. (scochran@usgs.gov)

Process_Date: 20230104

Process_Step:

Process_Description:

Added most up to date C14 data for cores 7, 8, and 12 as of August 2023 (grsnyder@usgs.gov).

Process_Date: 20230821

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Point
Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 40

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: 2019-651-FA_cores_C14.csv
Entity_Type_Definition:

Comma-delimited text file containing radiocarbon age data for core samples.

Entity_Type_Definition_Source: Producer defined

Attribute:

Attribute_Label: UCIAMS Number
Attribute_Definition:

University of California Irvine Accelerator Mass Spectrometry Laboratory Number

Attribute_Definition_Source: UC Irvine
Attribute_Domain_Values:

Unrepresentable_Domain: Unique identifier for the sample assigned at UCIAMS

Attribute:

Attribute_Label: Sample name
Attribute_Definition:

U.S. Geological Survey assigned sample name given in HF-“core”-“depth”-“material” (for example, HF-1-46-shell is Hosgri Fault core 1 sampled at 46 cm deep with shell material).

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Unrepresentable_Domain: Unique identifier for the sample assigned at USGS

Attribute:

Attribute_Label: Sampling Depth in Core (cm)
Attribute_Definition:

Depth of sampling in centimeters as measured from top of core. “VC cutter nose” indicates sediments collected from vibracore cutter nose in the very bottom several centimeters of vibracore during collection.

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 16
Range_Domain_Maximum: 296
Attribute_Units_of_Measure: centimeters

Attribute:

Attribute_Label: fraction modern
Attribute_Definition: fraction of modern carbon in sample
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -0.0003
Range_Domain_Maximum: 1.0082
Attribute_Units_of_Measure: unitless ratio

Attribute:

Attribute_Label: fraction modern error
Attribute_Definition: Standard error of measurement in one standard deviation
Attribute_Definition_Source: Produce defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -0.0006
Range_Domain_Maximum: 0.0016
Attribute_Units_of_Measure: unitless ratio

Attribute:

Attribute_Label: D14C (per mille)
Attribute_Definition: carbon 14 depletion per mille
Attribute_Definition_Source: Produce defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -1000.3
Range_Domain_Maximum: 8.2
Attribute_Units_of_Measure: per mille

Attribute:

Attribute_Label: D14C error (per mille)
Attribute_Definition: One standard deviation error of D14C measurement in per mille
Attribute_Definition_Source: Produce defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -0.6
Range_Domain_Maximum: 1.6
Attribute_Units_of_Measure: per mille

Attribute:

Attribute_Label: 14C age (years BP)
Attribute_Definition:

Carbon 14 age in years before present. “Modern” value indicates sample was modern in age. Values of “>54000” indicate samples that are older than the maximum 14C age of ~54000 years BP that can be measured with radiocarbon.

Attribute_Definition_Source: Produce defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1220
Range_Domain_Maximum: 49700
Attribute_Units_of_Measure: years before present

Attribute:

Attribute_Label: 14C age error (years BP)
Attribute_Definition:

One standard deviation error of 14C age measurement in per mille. “n.d.” indicates sample had no data for the associated attribute.

Attribute_Definition_Source: Produce defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 15
Range_Domain_Maximum: 1600
Attribute_Units_of_Measure: years before present

Attribute:

Attribute_Label: Calibrated age (Cal years BP)
Attribute_Definition: calibrated carbon 14 age in years before present
Attribute_Definition_Source: Produce defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 515
Range_Domain_Maximum: 54911
Attribute_Units_of_Measure: calibrated years before present

Overview_Description:

Entity_and_Attribute_Overview:

The first line of the csv file is a header line. Location information for each sediment core can be found in the 2019-651-FA_cores_locations shapefile included in this data release.

Entity_and_Attribute_Detail_Citation: U.S. Geological Survey

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey - CMGDS

Contact_Address:

Address_Type: mailing and physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060

Contact_Voice_Telephone: 1-831-427-4747
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov

Resource_Description:

Radiocarbon age data are provided in a comma-delimited text file (2019-651-FA_cores_C14.csv) accompanied by CSDGM FGDC compliant metadata.

Distribution_Liability:

Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: comma-delimited text
Format_Version_Date: 2022
Format_Information_Content: Comma-delimited text file of radiocarbon age data.
Transfer_Size: 0.003

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: https://doi.org/10.5066/P9A0U8J7

Access_Instructions:

Data can be downloaded using the Network_Resource_Name link and scrolling to the Environmental Data section.

Fees: None.

Technical_Prerequisites:

Radiocarbon age data in .csv format can be viewed with any standard table editing software (for example, Excel, Numbers).

Metadata_Reference_Information:

Metadata_Date: 20230908
Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

U.S. Geological Survey, Pacific Coastal and Marine Science Center

Contact_Person: PCMSC Science Data Coordinator

Contact_Address:

Address_Type: mailing and physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060

Contact_Voice_Telephone: 831-427-4747
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov

Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/DataReleases/CMGDS_DR_tool/DR_P9A0U8J7/2019-651-FA_cores_C14_metadata.html>