Radiocarbon age data from sediment cores collected offshore southern Cascadia, during field activity 2019-643-FA

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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: Jenna C. Hill
Originator: Nora M. Nieminski
Originator: SeanPaul M. La Selle
Originator: Janet T. Watt
Originator: Daniel S. Brothers
Originator: Mary L. McGann
Originator: Travis V. Alongi
Originator: Gerry A. Hatcher
Originator: Brandon M. Nasr
Originator: Jennifer A. McKee
Originator: Peter Dal Ferro
Publication_Date: 20240327
Title:

Radiocarbon age data from sediment cores collected offshore southern Cascadia, during field activity 2019-643-FA

Geospatial_Data_Presentation_Form: CSV format tabular data
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P1E8GDZH

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/P1E8GDZH
Larger_Work_Citation:

Citation_Information:

Sediment core data from offshore southern Cascadia - USGS field activity 2019-643-FA

Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P1E8GDZH

Publication_Information:

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

Other_Citation_Details:

Suggested Citation: Hill, J.C., Nieminski, N.M., La Selle, S.M., Watt, J.W., Brothers, D.S., McGann, M.L., Alongi, T.V., Hatcher, G.A., Nasr, B.M., McKee, J.A., and Dal Ferro, P., 2024, Sediment core data from offshore southern Cascadia during field activity 2019-643-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P1E8GDZH.

Online_Linkage: https://doi.org/10.5066/P1E8GDZH

Description:

Abstract:

This dataset presents radiocarbon data from 87 samples from sediment cores collected in southern Cascadia (offshore northern California) aboard the M/V Bold Horizon in September-October 2019. Sample ages were determined by the National Ocean Sciences Accelerator Mass Spectrometry (NOSAMS) facility and the W.M. Keck Carbon Cycle Accelerator Mass Spectrometry (KCCAMS) facility at the University of California, Irvine (UCI).

Purpose:

As part of a multi-year project focused on characterizing offshore marine geohazards (tsunamis, earthquakes, and landslides), the U.S. Geological Survey (USGS) Coastal and Marine Hazards and Resources Program is collaborating with the Bureau of Ocean Energy Management (BOEM) to conduct research offshore northern California. These data were obtained to provide age constraint of various offshore activity in the southern extent of the Cascadia Subduction Zone, which is a major tectonic boundary that is prone to megathrust earthquakes and includes a BOEM offshore wind area of interest.

Supplemental_Information:

Additional information about the field activity from which these data were derived is available online at: https://cmgds.marine.usgs.gov/fan_info.php?fan=2019-643-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: 20190927
Ending_Date: 20191010

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: -125.25388241
East_Bounding_Coordinate: -124.07787323
North_Bounding_Coordinate: 41.76311745
South_Bounding_Coordinate: 40.76311745

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:957d8656-32f8-443f-b90f-02d065e04418

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: core analysis
Theme_Keyword: ocean processes
Theme_Keyword: sediment transport
Theme_Keyword: carbon-14 analysis

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: 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
Theme_Keyword: Department of the Interior
Theme_Keyword: DOI
Theme_Keyword: field activity number 2019-643-FA

Place:

Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: Pacific Ocean
Place_Keyword: State of California
Place_Keyword: Humboldt County
Place_Keyword: Eureka

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:

Radiocarbon analyses were conducted the National Ocean Sciences Accelerator Mass Spectrometry (NOSAMS) facility, Woods Hole, Massachusetts at and the W.M. Keck Carbon Cycle Accelerator Mass Spectrometry (KCCAMS) facility at the University of California, Irvine (UCI).

Cross_Reference:

Citation_Information:

Originator: Dartnell, P.
Originator: Conrad, J.E.
Originator: Watt, J.T.
Originator: Hill, J.C.
Publication_Date: 2021
Title:

Composite multibeam bathymetry surface and data sources of the southern Cascadia Margin offshore Oregon and northern California

Other_Citation_Details:

Dartnell, P., Conrad, J.E., Watt, J.T., and Hill, J.C., 2021, Composite multibeam bathymetry surface and data sources of the southern Cascadia Margin offshore Oregon and northern California: U.S. Geological Survey data release, https://doi.org/10.5066/P9C5DBMR

Online_Linkage: https://doi.org/10.5066/P9C5DBMR.

Cross_Reference:

Citation_Information:

Originator: Ryan, W.B.F.
Originator: Carbotte, S.M.
Originator: Coplan, J.O.
Originator: O’Hara, A.M.
Originator: Melkonian, A.
Originator: Arko, R.
Originator: Weissel, R.A.
Originator: Goodwillie, A.
Originator: Nitsche, F.
Originator: Bonczkowski, J.
Originator: Zemsky, R.
Publication_Date: 2009
Title: Global Multi-Resolution Topography synthesis
Other_Citation_Details:

Originator: Ryan, W.B.F., Carbotte, S.M., Coplan, J.O., O’Hara, A.M., Melkonian, A., Arko, R., Weissel, R.A., Goodwillie, A., Nitsche, F., Bonczkowski, J., Zemsky, R., 2009, Global Multi-Resolution Topography synthesis: Geochemistry, Geophysics, Geosystems, v. 10, n. 3, p. 9, https://doi.org/10.1029/2008GC002332

Online_Linkage: https://doi.org/10.1029/2008GC002332

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report: No formal attribute accuracy tests were conducted.

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.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

A Hemisphere V110 GPS system was used for obtaining latitude and longitude point locations during the field activity with a stated accuracy of 0.6 meters (95% confidence).

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

Water depth values at core locations were estimated from multibeam bathymetric data (Dartnell and others (2021) or Ryan and others (2009)). Radiocarbon sample depths were measured relative to the top of the uppermost section of each core. No formal vertical accuracy tests were conducted.

Lineage:

Process_Step:

Process_Description:

Cores were collected aboard M/V Bold Horizon using a U.S. Geological Survey (USGS) jumbo piston corer (JPC) on cruise 2019-643-FA. The JPC system consisted of a 2500-lb head weight, 3.43-inch diameter barrel, and polybutyrate liner. The JPC trigger arm was set up to collect a trigger core (TC) associated with each JPC (if successful). JPCs were extruded and sectioned (<150 cm) at sea. The cores were then transported back to the USGS Pacific Coastal and Marine Science Center.

Process_Date: 2019

Process_Step:

Process_Description:

Radiocarbon analyses were conducted at the National Ocean Sciences Accelerator Mass Spectrometry (NOSAMS) facility, Woods Hole, Massachusetts for radiocarbon dating.

Process_Date: 2020
Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: National Ocean Science Accelerator Mass Spectrometry Facility
Contact_Organization: Woods Hole Oceanographic Institution

Contact_Address:

Address_Type: mailing and physical
Address: 266 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543

Contact_Voice_Telephone: 508-548-1400
Contact_Electronic_Mail_Address: information@whoi.edu

Process_Step:

Process_Description:

Radiocarbon analyses were conducted at the U.C. Irvine Keck Carbon Cycle Accelerator Mass Spectrometer facility (KCCAMS) for radiocarbon dating.

Process_Date: 2022
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

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: 87

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.00001
Longitude_Resolution: 0.00001
Geographic_Coordinate_Units: Decimal degrees

Geodetic_Model:

Horizontal_Datum_Name: WGS 1984
Ellipsoid_Name: WGS 84
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257224

Vertical_Coordinate_System_Definition:

Depth_System_Definition:

Depth_Datum_Name: Local surface
Depth_Resolution: 0.1
Depth_Distance_Units: meters
Depth_Encoding_Method: Attribute values

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: 2019-643-FA_cores_radiocarbon.csv
Entity_Type_Definition:

Radiocarbon data obtained through the National Ocean Sciences Accelerator Mass Spectrometry (NOSAMS) facility in Woods Hole, Massachusetts and the University of California, Irvine. Comma-delimited text file also includes sample location, sample depth, and description of the material dated.

Entity_Type_Definition_Source: Producer defined

Attribute:

Attribute_Label: Accession_no
Attribute_Definition:

The unique accession number is an internal Accelerator Mass Spectrometry laboratory identifier. “OS-“ identifies NOSAMD and “UCI-“ identifies the University of California Irvine

Attribute_Definition_Source: NOSAMS and UC Irvine
Attribute_Domain_Values:

Unrepresentable_Domain:

Identifier (OS- or UCI- followed by a unique number) for the sample assigned at each respective facility where analyses were performed

Attribute:

Attribute_Label: Sample_name
Attribute_Definition:

U.S. Geological Survey assigned sample name given in “core”-“depth” (for example, JPC04-186–188cm is jumbo piston core 04 sampled at 186–188 cm deep).

Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:

Unrepresentable_Domain: Unique identifier for the sample assigned at USGS

Attribute:

Attribute_Label: Latitude
Attribute_Definition: Latitude of sample in decimal degrees, north
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 40.77668
Range_Domain_Maximum: 41.58120
Attribute_Units_of_Measure: decimal degrees

Attribute:

Attribute_Label: Longitude
Attribute_Definition: Longitude of sample in decimal degrees, east
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -124.94707
Range_Domain_Maximum: -124.24902
Attribute_Units_of_Measure: decimal degrees

Attribute:

Attribute_Label: Core_water_depth_m
Attribute_Definition: Depth of seafloor at core location
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 60
Range_Domain_Maximum: 1280
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: min_sample_depth_cm
Attribute_Definition:

Upper depth of interval from which sample was collected from core. Depth is measured in centimeters from the surface (top of the uppermost section of the core).

Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 14
Range_Domain_Maximum: 694
Attribute_Units_of_Measure: centimeters

Attribute:

Attribute_Label: max_sample_depth_cm
Attribute_Definition:

Lower depth of interval from which sample was collected from core. Depth is measured in centimeters from the surface (top of the uppermost section of the core).

Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 16
Range_Domain_Maximum: 697
Attribute_Units_of_Measure: centimeters

Attribute:

Attribute_Label: Material_dated
Attribute_Definition:

Description of sample material submitted for radiocarbon dating. Foraminifera were hand-picked from cores by Mary McGann (USGS). Mollusc, plant/wood, and twiglet material was hand-picked from cores by Nora Neiminski (USGS).

Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:

Unrepresentable_Domain: Description of sample

Attribute:

Attribute_Label: 14C_age_years_BP
Attribute_Definition: Conventional radiocarbon age in years before present
Attribute_Definition_Source:

NOSAMS (Woods Hole, Massachusetts) and University of California, Irvine

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 160
Range_Domain_Maximum: 48000
Attribute_Units_of_Measure: Radiocarbon years before 1950 (14C yr BP)

Attribute:

Attribute_Label: 14C_age_error_years_BP
Attribute_Definition: Radiocarbon age error, 1 sigma.
Attribute_Definition_Source:

NOSAMS (Woods Hole, Massachusetts) and University of California, Irvine

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 15
Range_Domain_Maximum: 2700
Attribute_Units_of_Measure: Radiocarbon years + or – the calculated age

Attribute:

Attribute_Label: D13C_per_mille
Attribute_Definition:

Delta Carbon-13 is a measure of the ratio of stable isotopes C-13:C-12, reported in parts per thousand (per mille, or 0/00). If blank, d13C analyses were not performed.

Attribute_Definition_Source:

NOSAMS (Woods Hole, Massachusetts) and University of California, Irvine

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -27.89
Range_Domain_Maximum: 7.87
Attribute_Units_of_Measure: parts per thousand (per mille)

Attribute:

Attribute_Label: Fraction_modern
Attribute_Definition: Fraction of modern carbon in sample
Attribute_Definition_Source:

NOSAMS (Woods Hole, Massachusetts) and University of California, Irvine

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.0025
Range_Domain_Maximum: 0.9806
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:

NOSAMS (Woods Hole, Massachusetts) and University of California, Irvine

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.0006
Range_Domain_Maximum: 0.0079
Attribute_Units_of_Measure: unitless ratio

Overview_Description:

Entity_and_Attribute_Overview: The first line of the csv file is a header line.
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 separated value (CSV) text file (2019-643-FA_cores_radiocarbon.csv).

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: 2023
Format_Information_Content: Comma separate value (csv) text file of radiocarbon age data.
File_Decompression_Technique:

Zip files may be decompressed with any zip utility (for example, 7zip, WinZip, Archive Utility).

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: https://doi.org/10.5066/P1E8GDZH

Access_Instructions:

Data can be downloaded using the Network_Resource_Name link and scrolling to 2019-643-FA_cores_radiocarbon.csv in the Sampling 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: 20240327
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_P1E8GDZH/2019-643-FA_cores_radiocarbon_metadata.html>