Radiocarbon age data from vibracores collected in Ozette Lake, Washington, in 2019

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Frequently anticipated questions:

What does this data set describe?

Title:
Radiocarbon age data from vibracores collected in Ozette Lake, Washington, in 2019
Abstract:
Seismic reflection data and cores were collected in Ozette Lake, Washington, in 2019. Radiocarbon samples were taken from cores in select locations. These data were used to investigate submarine landslide deposits triggered by large Cascadia Subduction Zone earthquakes.
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=2019-622-FA https://cmgds.marine.usgs.gov/fan_info.php?fan=2021-641-FA
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
  1. How might this data set be cited?
    Snyder, George R., Balster-Gee, Alicia F., Brothers, Daniel S., Singleton, Drake M., Padgett, Jason S., Hill, Jenna C., Ritchie, Andrew C., SeanPaul M. La Selle, Kluesner, Jared W., Sherrod, Brian, Powers, Daniel C., Ferro, Peter Dal, and Currie, Jackson E., 20240615, Radiocarbon age data from vibracores collected in Ozette Lake, Washington, in 2019: data release DOI:10.5066/P9W5RAL4, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

    This is part of the following larger work.

    Snyder, George R., Balster-Gee, Alicia F., Brothers, Daniel S., Singleton, Drake M., Padgett, Jason S., Hill, Jenna C., Ritchie, Andrew C., SeanPaul M. La Selle, Kluesner, Jared W., Sherrod, Brian, Powers, Daniel C., Ferro, Peter Dal, and Currie, Jackson E., 2024, Seismic sub-bottom, sediment core, and radiocarbon data collected in Ozette Lake, Washington: data release DOI:10.5066/P9W5RAL4, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, CA.

    Online Links:

    Other_Citation_Details:
    Suggested Citation: Snyder, G.R., Balster-Gee, A.F., Brothers, D.S., Singleton, D.M., Padgett, J.S., Hill, J.C., Ritchie, A.C., La Selle, S.M., Kluesner, J.W., Sherrod, B., Powers, D.C., Dal Ferro, P., and Currie, J.E., 2024, Seismic sub-bottom, sediment core, and radiocarbon data collected in Ozette Lake, Washington: U.S. Geological Survey data release, https://doi.org/10.5066/P9W5RAL4.
  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -124.66785
    East_Bounding_Coordinate: -124.607701
    North_Bounding_Coordinate: 48.15099
    South_Bounding_Coordinate: 48.05184
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 18-Oct-2019
    Ending_Date: 24-Oct-2019
    Currentness_Reference:
    Ground conditions at time data were collected
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: comma-delimited text
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a Point data set. It contains the following vector data types (SDTS terminology):
      • Point (93)
    2. What coordinate system is used to represent geographic features?
      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000001. Longitudes are given to the nearest 0.000001. Latitude and longitude values are specified in Decimal Degrees. The horizontal datum used is WGS 1984.
      The ellipsoid used is WGS 84.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257224.
      Vertical_Coordinate_System_Definition:
      Depth_System_Definition:
      Depth_Datum_Name: Local surface
      Depth_Resolution: 0.001
      Depth_Distance_Units: meters
      Depth_Encoding_Method: Attribute values
  7. How does the data set describe geographic features?
    OzetteLake.Radiocarbon.data.csv
    Comma-delimited text file containing radiocarbon age data for core samples. (Source: Producer defined)
    Date Reported
    Date sample was measured (Source: National Ocean Sciences Accelerator Mass Spectrometry Facility (NOSAMS) or W.M. Keck Carbon Cycle Accelerator Mass Spectrometry Facility (KCCAMS))
    Range of values
    Minimum:08/14/2020
    Maximum:12/18/2022
    Units:Date in MM/DD/YYYY
    Core ID
    U.S. Geological Survey assigned core ID (Source: U.S. Geological Survey) Unique core ID assigned in the field.
    Sample interval midpoint (cm)
    The midpoint of the sample interval in centimeters representing local core depth. (Source: U.S. Geological Survey)
    Range of values
    Minimum:3.0
    Maximum:307.5
    Units:centimeters
    Submitter Identification
    Unique submitter identifier that combines the USGS Core ID and the local core depth sample interval in centimeters (Source: U.S. Geological Survey) Unique core ID assigned in the field and local core depth sample interval in centimeters.
    Process
    Type of material sampled for radiocarbon. (Source: Producer defined) Organic Carbon (OC)
    Accession Number
    Unique sample ID assigned by NOSAMS or KCCAMS (Source: National Ocean Sciences Accelerator Mass Spectrometry Facility (NOSAMS) or W.M. Keck Carbon Cycle Accelerator Mass Spectrometer Facility (KCCAMS)) Unique sample ID
    Lab
    The lab that performed the radiocarbon analysis (Source: Producer defined)
    ValueDefinition
    NOSAMSNational Ocean Sciences Accelerator Mass Spectrometry Facility
    KCCAMSW.M. Keck Carbon Cycle Accelerator Mass Spectrometer Facility
    Fraction modern
    Fraction of modern carbon in sample (Source: Producer defined)
    Range of values
    Minimum:0.2112
    Maximum:0.9786
    Units:unitless ratio
    fraction modern error
    Standard error of measurement (Source: Producer defined)
    Range of values
    Minimum:0.0009
    Maximum:0.0257
    Units:unitless ratio
    14C age (years BP)
    Conventional carbon 14 age in years before present (Source: Producer defined)
    Range of values
    Minimum:170
    Maximum:12490
    Units:years before present
    14C age error
    One standard deviation error of 14C age measurement (Source: Producer defined)
    Range of values
    Minimum:15
    Maximum:240
    Units:years before present
    D14C (per mille)
    carbon 14 depletion per mille. Entries with n.d. have indicates sample has no data for that attribute. (Source: Produce defined)
    Range of values
    Minimum:-788.80
    Maximum:-21.4
    Units:per mille
    D14C error
    carbon 14 depletion per mille error. Values of n/a indicate that no data is available. (Source: Producer defined.)
    Range of values
    Minimum:0.9
    Maximum:25.7
    Units:per mille
    Sample Photo Name
    If a sample photo was logged for the particular sample interval, then this lists the name of the sample photo that in included in OzetteLake.radiocarbon.sample.photo.zip. (Source: Producer defined) The name of the sample photo that in included in OzetteLake.radiocarbon.sample.photo.zip. If no sample photo was taken then n/a is listed.
    Entity_and_Attribute_Overview:
    The first line of the csv file is a header line listing attribute labels.
    Entity_and_Attribute_Detail_Citation: U.S. Geological Survey

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • George R. Snyder
    • Alicia F. Balster-Gee
    • Daniel S. Brothers
    • Drake M. Singleton
    • Jason S. Padgett
    • Jenna C. Hill
    • Andrew C. Ritchie
    • SeanPaul M. La Selle
    • Jared W. Kluesner
    • Brian Sherrod
    • Daniel C. Powers
    • Peter Dal Ferro
    • Jackson E. Currie
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    U.S. Geological Survey, Pacific Coastal and Marine Science Center
    Attn: PCMSC Science Data Coordinator
    2885 Mission Street
    Santa Cruz, CA

    831-427-4747 (voice)
    pcmsc_data@usgs.gov

Why was the data set created?

Identification of fault-related submarine hazards is a primary mission of the USGS Coastal and Marine Geology Program. In the US Pacific Northwest region, the greatest earthquake and tsunami threat is posed by the Cascadia Subduction Zone. From 2019-2021 the USGS carried out a detailed field investigation of earthquake-triggered landslide deposits in Ozette Lake, WA, to reconstruct the timing and severity of large subduction zone earthquakes in northern Cascadia. Field data collected as part of this investigation include boomer single-channel seismic reflection profiles, chirp seismic reflection profiles, and sediment cores. These data are intended to further our understanding of geologic hazards relating to the Cascadia Subduction Zone, improve risk assessments for local communities and critical infrastructure, and to provide data for future research on regional tectonic and sedimentary history of northern Cascadia.

How was the data set created?

  1. From what previous works were the data drawn?
    Dartnell and others, 2024 (source 1 of 1)
    Dartnell, Peter, Brothers, Daniel S., Ritchie, Andrew C., Sherrod, Brian, Currie, Jackson E., Ferro, Peter Dal, and Powers, Daniel C., 2024, Bathymetry and acoustic-backscatter data for Ozette Lake, Washington collected during USGS field activity 2019-622-FA: U.S. Geological Survey, online.

    Online Links:

    Type_of_Source_Media: online database
    Source_Contribution: High resolution bathymetry data
  2. How were the data generated, processed, and modified?
    Date: 16-Jan-2024 (process 1 of 2)
    Sediment cores were collected throughout Ozette Lake, WA during USGS field activity 2019-622-FA and 2021-641-FA using either a Vibracorer (VC- labeled core ID), a gravity corer (GC- labeled core ID), or a mini-hammer corer (BC- labeled core ID). Water depths were derived from high resolution bathymetry (Dartnell and others, 2024). Sediment cores were sent to USGS Pacific Coastal and Marine Science Center (PCMSC) for processing and archiving. At PCMSC, cores were split and photographed using a Geotek multi-sensor core logger (MSCL) system. Cores over 1.5 m in length were split into multiple sections to permit scanning. Additional sampling of the split cores included grainsize analysis, X-ray fluorescence (XRF) scanning, and radiocarbon sampling to date stratigraphic ages. Data sources used in this process:
    • Dartnell and others, 2024
    Date: 20-Mar-2021 (process 2 of 2)
    Where suitable material was present, samples from sediment layers of interest were collected and sent to the W.M. Keck Carbon Cycle Accelerator Mass Spectrometer (KCCAMS) Facility or the National Ocean Sciences Accelerator Mass Spectrometry (NOSAMS) Facility for radiocarbon dating. Person who carried out this activity:
    W.M. Keck Carbon Cycle Accelerator Facility
    Department of Earth System Science University of California, Irvine
    2222B Croul Hall
    Irvine, CA

    949-824-3674 (voice)
    jsouthon@uci.edu
  3. What similar or related data should the user be aware of?
    Reimer, Paula J., Austin, William E.N., Bard, Edouard, Bayliss, Alex, Blackwell, Paul G., Ramsey, Christopher Bronk, Butzin, Martin, Cheng, Hai, Edwards, R. Lawrence, Friedrich, Michael, and Grootes, Pieter M., 2020, The IntCal20 Northern Hemisphere radiocarbon age calibration curve (0–55 cal kBP).

    Online Links:

    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.

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?
    Quality control of attribute accuracy was conducted during field data collection, processing workflows and in compilation of this data release.
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    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.
  5. How consistent are the relationships among the observations, including topology?
    No formal logical consistency tests were conducted.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
Access_Constraints No access constraints
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.
  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey - CMGDS
    2885 Mission Street
    Santa Cruz, CA

    1-831-427-4747 (voice)
    pcmsc_data@usgs.gov
  2. What's the catalog number I need to order this data set? Radiocarbon age data are provided in a comma-delimited text file OzetteLake.radiocarbon.data.csv accompanied by CSDGM FGDC compliant metadata.
  3. What legal disclaimers am I supposed to read?
    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.
  4. How can I download or order the data?
    • Availability in digital form:
      Data format: Comma-delimited text file of radiocarbon age data. in format comma-delimited text Size: 0.0093
      Network links: https://doi.org/10.5066/P9A0U8J7
    • Cost to order the data: None.

  5. What hardware or software do I need in order to use the data set?
    Radiocarbon age data in .csv format can be viewed with any standard table editing software (for example, Excel, Numbers).

Who wrote the metadata?

Dates:
Last modified: 15-Jun-2024
Metadata author:
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Attn: PCMSC Science Data Coordinator
2885 Mission Street
Santa Cruz, CA

831-427-4747 (voice)
pcmsc_data@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)
This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/DataReleases/CMGDS_DR_tool/DR_P9W5RAL4/OzetteLake.core.radiocarbon.metadata.faq.html>
Generated by mp version 2.9.51 on Mon Jun 24 11:44:02 2024