X-ray Fluorescence (XRF) scans of vibracores collected in Ozette Lake, Washington, in 2019.

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Frequently anticipated questions:

What does this data set describe?

Title:
X-ray Fluorescence (XRF) scans of vibracores collected in Ozette Lake, Washington, in 2019.
Abstract:
Sediment cores were collected in Ozette Lake, Washington, in 2019, and cores were scanned using X-ray fluorescence (XRF). These data were used to investigate submarine landslide deposits triggered by large Cascadia Subduction Zone earthquakes.
Supplemental_Information:
Additional information about the field activity or activities from which these data were derived is available online at:
https://cmgds.marine.usgs.gov/fan_info.php?fan=2019-622-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, X-ray Fluorescence (XRF) scans of 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, from 2019-2021: 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: -124.700615251
    East_Bounding_Coordinate: -124.585683695
    North_Bounding_Coordinate: 48.112743138
    South_Bounding_Coordinate: 48.011953840
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 14-Jul-2019
    Ending_Date: 03-Aug-2019
    Currentness_Reference:
    Ground conditions at the 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 (886)
    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: 0.1
      Depth_Distance_Units: meters
      Depth_Encoding_Method: Attribute values
  7. How does the data set describe geographic features?
    OzetteLake.core.XRFdata.csv
    Table of core XRF data (Source: producer defined)
    Core ID
    Unique identifier for each core (Source: producer defined) sample identifier
    Section Number
    Core were sectioned into 150 cm or shorter sections in order to fit into the scanning equipment. Sections numbers are sequential starting from the top of the original unsectioned core. (Source: producer defined)
    Range of values
    Minimum:1
    Maximum:2
    Units:section number
    Resolution:1
    Section Depth (cm)
    Depth of XRF measurement as measured from the top of the section (value represents the upper edge of a 1 cm interval). Depths are not corrected for core compaction. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:152
    Units:centimeters
    Resolution:1
    XRF Total Counts
    The total number of X-ray photons detected by the XRF during a measurement. No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:500564
    Maximum:1127310
    Units:number of photons
    Resolution:1
    XRF Live Time (seconds)
    The total time the XRF was detecting photons during a measurement. No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:25
    Maximum:28
    Units:seconds
    Resolution:1
    Ti (ppm)
    Titanium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:2354.1
    Units:parts per million (ppm)
    Resolution:0.01
    Ti-Error (+/- ppm)
    Estimated error of Titanium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:50.18
    Maximum:2031.3
    Units:+/- parts per million (ppm)
    Resolution:.01
    V (ppm)
    Vanadium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:187.48
    Units:parts per million (ppm)
    Resolution:.01
    V-Error (+/- ppm)
    Estimated error of Vanadium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:26.37
    Maximum:116.9
    Units:parts per million (ppm)
    Resolution:.01
    Cr (ppm)
    Chromium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:94.15
    Units:parts per million (ppm)
    Resolution:.01
    Cr-Error (+/- ppm)
    Estimated error of Chromium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:13.57
    Maximum:58.96
    Units:parts per million (ppm)
    Resolution:.01
    Mn (ppm)
    Manganese abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:2846.85
    Units:parts per million (ppm)
    Resolution:.01
    Mn-Error (+/- ppm)
    Estimated error of Manganese abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:14.5
    Maximum:4644.71
    Units:parts per million (ppm)
    Resolution:.01
    Fe (ppm)
    Iron abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:72.15
    Maximum:45642.76
    Units:parts per million (ppm)
    Resolution:.01
    Fe-Error (+/- ppm)
    Estimated error of Iron abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:7.22
    Maximum:299.3
    Units:parts per million (ppm)
    Resolution:.01
    Co (ppm)
    Cobalt abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0
    Units:parts per million (ppm)
    Resolution:1
    Co-Error (+/- ppm)
    Estimated error of Cobalt abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:7.91
    Maximum:117.8
    Units:parts per million (ppm)
    Resolution:.01
    Ni (ppm)
    Nickel abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:19.19
    Units:parts per million (ppm)
    Resolution:.01
    Ni-Error (+/- ppm)
    Estimated error of Nickel abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:3.68
    Maximum:24.9
    Units:parts per million (ppm)
    Resolution:.01
    Cu (ppm)
    Copper abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:38.07
    Units:parts per million (ppm)
    Resolution:.01
    Cu-Error (+/- ppm)
    Estimated error of Copper abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:2.65
    Maximum:17.58
    Units:parts per million (ppm)
    Resolution:.01
    Zn (ppm)
    Zinc abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:66.79
    Units:parts per million (ppm)
    Resolution:.01
    Zn-Error (+/- ppm)
    Estimated error of Zinc abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:1.49
    Maximum:6.84
    Units:parts per million (ppm)
    Resolution:.01
    As (ppm)
    Arsenic abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:66.93
    Units:parts per million (ppm)
    Resolution:.01
    As-Error (+/- ppm)
    Estimated error of Arsenic abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0.87
    Maximum:13.73
    Units:parts per million (ppm)
    Resolution:.01
    Se (ppm)
    Selenium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0
    Units:parts per million (ppm)
    Resolution:.01
    Se-Error (+/- ppm)
    Estimated error of Selenium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:4.38
    Maximum:7.43
    Units:parts per million (ppm)
    Resolution:.01
    Rb (ppm)
    Rubidium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:32.03
    Units:parts per million (ppm)
    Resolution:.01
    Rb-Error (+/- ppm)
    Estimated error of Rubidium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0.64
    Maximum:10.92
    Units:parts per million (ppm)
    Resolution:.01
    Sr (ppm)
    Strontium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:1.52
    Maximum:95.51
    Units:parts per million (ppm)
    Resolution:.01
    Sr-Error (+/- ppm)
    Estimated error of Strontium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0.37
    Maximum:1.56
    Units:parts per million (ppm)
    Resolution:.01
    Y (ppm)
    Yttrium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:3.01
    Maximum:13.88
    Units:parts per million (ppm)
    Resolution:.01
    Y-Error (+/- ppm)
    Estimated error of Yttrium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0.56
    Maximum:1.08
    Units:parts per million (ppm)
    Resolution:.01
    Zirconium (ppm)
    Titanium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:73.11
    Units:parts per million (ppm)
    Resolution:.01
    Zr-Error (+/- ppm)
    Estimated error of Zirconium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0.7
    Maximum:21.35
    Units:parts per million (ppm)
    Resolution:.01
    Nb (ppm)
    Niobium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:8.57
    Units:parts per million (ppm)
    Resolution:.01
    Nb-Error (+/- ppm)
    Estimated error of Niobium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:1.02
    Maximum:49.15
    Units:parts per million (ppm)
    Resolution:.01
    Mo (ppm)
    Molybdenum abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:9.92
    Units:parts per million (ppm)
    Resolution:.01
    Mo-Error (+/- ppm)
    Estimated error of Molybdenum abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0.93
    Maximum:49.26
    Units:parts per million (ppm)
    Resolution:.01
    Ag (ppm)
    Silver abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:49.58
    Units:parts per million (ppm)
    Resolution:.01
    Ag-Error (+/- ppm)
    Estimated error of Silver abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:4.11
    Maximum:324.71
    Units:parts per million (ppm)
    Resolution:.01
    Cd (ppm)
    Cadmium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:40.42
    Units:parts per million (ppm)
    Resolution:.01
    Cd-Error (+/- ppm)
    Estimated error of Cadmium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:4.75
    Maximum:392.41
    Units:parts per million (ppm)
    Resolution:.01
    Sn (ppm)
    Tin abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:36.4
    Units:parts per million (ppm)
    Resolution:.01
    Sn-Error (+/- ppm)
    Estimated error of Tin abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:9.74
    Maximum:644.66
    Units:parts per million (ppm)
    Resolution:.01
    Sb (ppm)
    Antimony abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:60.51
    Units:parts per million (ppm)
    Resolution:.01
    Sb-Error (+/- ppm)
    Estimated error of Antimony abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:9.33
    Maximum:855.87
    Units:parts per million (ppm)
    Resolution:.01
    W (ppm)
    Tungsten abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0
    Units:parts per million (ppm)
    Resolution:.01
    W-Error (+/- ppm)
    Estimated error of Tungsten abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:40.12
    Maximum:76.35
    Units:parts per million (ppm)
    Resolution:.01
    Hg (ppm)
    Mercury abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:0
    Units:parts per million (ppm)
    Resolution:.01
    Hg-Error (+/- ppm)
    Estimated error of Mercury abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:31.7
    Maximum:59.4
    Units:parts per million (ppm)
    Resolution:.01
    Pb (ppm)
    Lead abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:458.29
    Units:parts per million (ppm)
    Resolution:.01
    Pb-Error (+/- ppm)
    Estimated error of Lead abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:1.27
    Maximum:53.84
    Units:parts per million (ppm)
    Resolution:.01
    Bi (ppm)
    Bismuth abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:9.68
    Units:parts per million (ppm)
    Resolution:.01
    Bi-Error (+/- ppm)
    Estimated error of Bismuth abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:1.14
    Maximum:55.13
    Units:parts per million (ppm)
    Resolution:.01
    Th (ppm)
    Thorium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:25.96
    Units:parts per million (ppm)
    Resolution:.01
    Th-Error (+/- ppm)
    Estimated error of Thorium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:2.42
    Maximum:191.19
    Units:parts per million (ppm)
    Resolution:.01
    U (ppm)
    Uranium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:7.31
    Units:parts per million (ppm)
    Resolution:.01
    U-Error (+/- ppm)
    Estimated error of Uranium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:1.12
    Maximum:98.52
    Units:parts per million (ppm)
    Resolution:.01
    LE (ppm)
    Light Element (LE) abundance in parts per million (ppm). LEs are elements lighter than Magnesium (Mg), and are indistinguishable from each other with the Olympus Delta Professional XRF and are therefore grouped together. No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:817935.53
    Maximum:976598.04
    Units:parts per million (ppm)
    Resolution:.01
    LE-Error (+/- ppm)
    Estimated error of Light Element (LE) abundance in parts per million (ppm). Les are elements lighter than Magnesium (Mg) and are indistinguishable from each other with the applied XRF system and are therefore grouped together. No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:446.76
    Maximum:6678.03
    Units:parts per million (ppm)
    Resolution:.01
    Mg (ppm)
    Magnesium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:25672.76
    Units:parts per million (ppm)
    Resolution:.01
    Mg-Error (+/- ppm)
    Estimated error of Magnesium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:3352.65
    Maximum:44818.35
    Units:parts per million (ppm)
    Resolution:.01
    Al (ppm)
    Aluminum abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:2199.11
    Maximum:31298.67
    Units:parts per million (ppm)
    Resolution:.01
    Al-Error (+/- ppm)
    Estimated error of Aluminum abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:351.06
    Maximum:786.23
    Units:parts per million (ppm)
    Resolution:.01
    Si (ppm)
    Silicon abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:3340.21
    Maximum:90274.22
    Units:parts per million (ppm)
    Resolution:.01
    Si-Error (+/- ppm)
    Estimated error of Silicon abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:112.83
    Maximum:684.88
    Units:parts per million (ppm)
    Resolution:.01
    P (ppm)
    Phosphorus abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:1947.98
    Units:parts per million (ppm)
    Resolution:.01
    P-Error (+/- ppm)
    Estimated error of Phosphorus abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:27.61
    Maximum:754.33
    Units:parts per million (ppm)
    Resolution:.01
    S (ppm)
    Sulfur abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:0
    Maximum:177.78
    Units:parts per million (ppm)
    Resolution:.01
    S-Error (+/- ppm)
    Estimated error of Sulfur abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:19.81
    Maximum:871.81
    Units:parts per million (ppm)
    Resolution:.01
    K (ppm)
    Potassium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:189.5
    Maximum:7073.76
    Units:parts per million (ppm)
    Resolution:.01
    K-Error (+/- ppm)
    Estimated error of Potassium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:15.46
    Maximum:59.78
    Units:parts per million (ppm)
    Resolution:.01
    Ca (ppm)
    Calcium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:452.27
    Maximum:2436.31
    Units:parts per million (ppm)
    Resolution:.01
    Ca-Error (+/- ppm)
    Estimated error of Calcium abundance in parts per million (ppm). No data values are represented by n.d. (Source: producer defined)
    Range of values
    Minimum:10.99
    Maximum:33.19
    Units:parts per million (ppm)
    Resolution:.01
    Entity_and_Attribute_Overview: The first line of the csv file is a header line.
    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, chirp seismic, 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?
  2. How were the data generated, processed, and modified?
    Date: 03-Aug-2019 (process 1 of 2)
    Vibracore samples were acquired in July of 2019 during USGS field activity 2019-622-FA throughout Ozette Lake in Washington. A Rossfelder P-5 vibracorer was used aboard the USGS Pacific Coastal and Marine Science Center's (PCMSC) coring Platform Hadai. Sediment cores were sent to PCMSC for processing and archiving.
    Date: 10-Aug-2021 (process 2 of 2)
    X-RAY FLUORESCENCE ANALYSIS: Cores were segmented into 150 cm (or shorter) sections and split into "working" and "archive" halves in the lab. Sediment surfaces were cleaned and smoothed on the "archive" halves of split cores. A four micron-thick ultralene film that is transparent to x-rays was applied to the sediment surface in order to protect the XRF window. Cores were loaded onto the track of a Geotek Multi Sensor Core Logger (MSCL) with an Olympus Delta Professional XRF gun mounted to an arm that moves the XRF sensor vertically on and off the core surface. The XRF sensor was calibrated before each scan using a 316-alloy reference coin. The XRF window is 1x1 cm square and measurements were collected every 1 cm downcore, automated by the motors on the MSCL. The XRF was run in "geochem" mode with two beams at 26-28 seconds each. Data were processed with Geotek MSCL software and elemental abundances are reported in parts per million (ppm). Geochem mode processes the data as a closed sum compositional dataset, assuming that all components add up to 100 percent. Elements lighter than Mg are grouped into the "Light Elements" (LE) category in order to maintain a closed compositional dataset. Person who carried out this activity:
    Angela Tan
    USGS
    Physical Scientist
    2885 Mission Street
    Santa Cruz, CA

    831-460-7409 (voice)
    atan@usgs.gov
  3. What similar or related data should the user be aware of?

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

  1. How well have the observations been checked?
    Quality control of attribute values were conducted during coring acquisition, processing, and compilation of the data release.
  2. How accurate are the geographic locations?
    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 percent confidence).
  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. XRF analysis is only included for cores VC-39, VC-41, VC-43 and VC-46. No data values (denoted by n.d.) within the csv table indicated that no data was collected or available for the sampled section depth, usually occurring near the top and bottom of core sections.
  5. How consistent are the relationships among the observations, including topology?
    Error reports are included as attributes for certain measurements. See detailed attribute descriptions in the Entity and Attribute section below.

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 of the dataset and in products derived from these data. This information is not intended for navigation purposes.
  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? XRF data are provided in a comma-separated (csv) format (OzetteLake.core.XRFdata.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 sediment XRF data. in format comma-delimited text Size: 0.3387
      Network links: https://doi.org/10.5066/P9W5RAL4
    • Cost to order the data: None.

  5. What hardware or software do I need in order to use the data set?
    These data can be viewed with any standard spreadsheet or delimited text editing software (e.g., 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.XRF.metadata.faq.html>
Generated by mp version 2.9.51 on Mon Jun 24 11:44:02 2024