X-ray fluorescence (XRF) scans of gravity cores and push cores from the Escanaba Trough (Gorda Ridge), geochem mode

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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: Katlin Bowman Adamczyk
Originator: Amy Gartman
Originator: Jaycee Favela
Originator: Jacob Tidwell
Publication_Date: 20250317
Title:

X-ray fluorescence (XRF) scans of gravity cores and push cores from the Escanaba Trough (Gorda Ridge), geochem mode

Geospatial_Data_Presentation_Form: comma-delimited text
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P13B46QX

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/P13B46QX
Online_Linkage:

https://www.sciencebase.gov/catalog/item/671aab6bd34efed5620fb81a

Larger_Work_Citation:

Citation_Information:

Originator: Katlin Bowman Adamczyk
Originator: Amy Gartman
Originator: Jaycee Favela
Originator: Jacob Tidwell
Publication_Date: 2025
Title:

Computed tomography (CT) scans, photographs, geochemistry, grain-size analysis, X-ray fluorescence (XRF) scans, X-ray diffraction (XRD), magnetic susceptibility, and gamma-ray bulk density data of gravity cores and push cores from the Escanaba Trough (Gorda Ridge)

Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P13B46QX

Publication_Information:

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

Other_Citation_Details:

Suggested Citation: Adamczyk, K., Gartman, A., Favela, J., and Tidwell, J., 2025, Computed tomography (CT) scans, photographs, geochemistry, grain-size analysis, X-ray fluorescence (XRF) scans, X-ray diffraction (XRD), magnetic susceptibility, and gamma-ray bulk density data of gravity cores and push cores from the Escanaba Trough (Gorda Ridge): U.S. Geological Survey data release, https://doi.org/10.5066/P13B46QX

Online_Linkage: https://doi.org/10.5066/P13B46QX
Online_Linkage:

https://www.sciencebase.gov/catalog/item/67004442d34e80be174aea95

Description:

Abstract:

This portion of the data release contains X-ray fluorescence (XRF) data from push cores and gravity cores collected from the Escanaba Trough vent field, Gorda Ridge, in the northeast Pacific Ocean. These data were collected in 2022 (USGS Field Activity 2022-621-FA). The XRF data were collected with the sensor in “geochem" mode and are provided in comma-delimited files (.csv).

Purpose:

Data were obtained to characterize downcore geochemical properties of sediments. These data are intended for science researchers, students, policy makers, and the general public.

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=2022-621-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: 20220801
Ending_Date: 20220808

Currentness_Reference: Time data were compiled to completion of the last process step

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -127.5362
East_Bounding_Coordinate: -127.4076
North_Bounding_Coordinate: 41.1632
South_Bounding_Coordinate: 40.6957

Keywords:

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: Nonliving Resources
Theme_Keyword: Material Resources
Theme_Keyword: Mineral Resources
Theme_Keyword: Physical/Chemical Features

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: push coring
Theme_Keyword: gravity coring
Theme_Keyword: chemical analysis
Theme_Keyword: mass spectroscopy
Theme_Keyword: geochemistry
Theme_Keyword: metallic mineral resources
Theme_Keyword: earth sciences
Theme_Keyword: marine geology

Theme:

Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme_Keyword: sediment geochemistry
Theme_Keyword: mineral resources
Theme_Keyword: chemical analysis

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: Global Ocean Mineral Resources

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:671aab6bd34efed5620fb81a

Place:

Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: Pacific Ocean

Place:

Place_Keyword_Thesaurus: NGA GEOnet Names Server (GNS)
Place_Keyword: Escanaba Trough
Place_Keyword: Gorda Ridge

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.

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

Browse_Graphic:

Browse_Graphic_File_Name:

https://www.sciencebase.gov/catalog/file/get/671aab6bd34efed5620fb81a?name=XRF.JPG&allowOpen=true

Browse_Graphic_File_Description:

Line plots of XRF metal concentrations verses sediment core depth.

Browse_Graphic_File_Type: JPEG

Data_Set_Credit:

Exploring the Seafloor and Oceanic Footprints is an interagency effort involving the National Oceanic and Atmospheric Administration, the U.S. Geological Survey, and the Bureau of Ocean Energy Management. Funding is acknowledged from NOAA Ocean Exploration via its Ocean Exploration Fiscal Year 2019 Funding Opportunity and through the National Oceanographic Partnership Program (NOPP), from the USGS Coastal and Marine Hazards and Resources Enhanced Funding Opportunities, and from the Bureau of Ocean Energy Management through Interagency Agreement M19PG00021 with the United States Geological Survey.

Native_Data_Set_Environment:

Windows 11 Enterprise, Microsoft Excel 365 for enterprise, Geotek MSCL 7.9

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report: No formal attribute accuracy tests were conducted.

Logical_Consistency_Report:

XRF element concentrations were compared to geochemistry subsample element concentrations (TN403_Geochemistry, published as part of this data release) collected from the same depth intervals. Elements that showed linear agreement at an R-squared value greater than 0.3 are included in this data release.

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:

The locations of push core samples were determined using ROV Jason’s ultra-short baseline (USBL) navigation. Accuracy for this depth is approximately 6-26 m. The locations of gravity core samples were determined using the R/V Thomas G. Thompson’s GPS navigation, which is accurate to less than 5 m. A formal accuracy assessment of the horizontal positional information in the dataset has not been conducted.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

For push core samples, the vertical accuracy was determined with ROV Jason’s altimeter, which is accurate to less than 1 m. For gravity core samples, the vertical accuracy was determined with the R/V Thomas G. Thompson’s multibeam bathymetry system. No formal positional accuracy tests were conducted.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: Adamczyk, Katlin
Originator: Gartman, Amy
Originator: Favela, Jaycee
Originator: Tidwell, Jacob
Publication_Date: 2025
Title:

Location and water depth for gravity cores and push cores from the Escanaba Trough (Gorda Ridge)

Geospatial_Data_Presentation_Form: comma-delimited text
Publication_Information:

Publication_Place: online
Publisher: U.S. Geological Survey

Online_Linkage:

https://www.sciencebase.gov/catalog/item/679282a3d34e88f5864c49e9

Type_of_Source_Media: U.S. Geological Survey data release
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20220524
Ending_Date: 20220613

Source_Currentness_Reference: ground condition at time samples were collected

Source_Citation_Abbreviation: TN403_CoreLocations
Source_Contribution:

Latitude, longitude, and water depth information for gravity cores and push cores from this same data release

Source_Information:

Source_Citation:

Citation_Information:

Originator: Adamczyk, Katlin
Originator: Gartman, Amy
Originator: Favela, Jaycee
Originator: Tidwell, Jacob
Publication_Date: 2025
Title:

Geochemistry of sediment subsamples from gravity and push cores from the Escanaba Trough (Gorda Ridge)

Online_Linkage:

https://www.sciencebase.gov/catalog/item/670957a2d34e969edc5a2a9b

Type_of_Source_Media: U.S. Geological Survey data release
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20220712
Ending_Date: 20231129

Source_Currentness_Reference: Time data were compiled to completion of the last process step

Source_Citation_Abbreviation: TN403_Geochemistry
Source_Contribution:

Element concentrations for sediment subsamples from this same data release

Process_Step:

Process_Description:

Push core and gravity core samples were collected on the R/V Thomas G. Thompson between May 24, 2022, and June 13, 2022, during the TN403 Escanaba Trough expedition, which was led and staffed by USGS employees. Push cores were pushed into sediment at 37 locations by ROV Jason’s manipulator arm in water depths between 3,201 and 3,301 meters. Gravity cores were collected using a gravity corer at 7 locations in water depths between 3209 and 3304 meters. Gravity cores greater than 60 cm in length were cut into sections onboard the ship and labeled ‘X’ (0-60 cm), ‘Y’ (60-120 cm), and ‘Z’ (>120 cm). All cores were stored upright and refrigerated until return to shore.

Process_Date: 20220613

Process_Step:

Process_Description:

Cores were 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 between 0.5 and 2 cm downcore, automated by the motors on the MSCL. The XRF was run in "geochem" mode with two beams at 20 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.

Process_Date: 20220808
Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Katlin Adamczyk
Contact_Organization: USGS

Contact_Position: Physical Scientist
Contact_Address:

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

Contact_Voice_Telephone: 831-460-7420
Contact_Electronic_Mail_Address: kadamczyk@usgs.gov

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: 2387

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.001
Longitude_Resolution: 0.001
Geographic_Coordinate_Units: Decimal degrees

Geodetic_Model:

Horizontal_Datum_Name: D_WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257222101

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label:

GC01-Y_geochem.csv, GC01-Z_geochem.csv, GC03-X_geochem.csv, GC03-Y_geochem.csv, GC03-Z_geochem.csv, GC04-X_geochem.csv, GC04-Y_geochem.csv, GC04-Z_geochem.csv, GC05-Z_geochem.csv, GC06-X_geochem.csv, GC06-Y_geochem.csv, GC06-Z_geochem.csv, GC08-X_geochem.csv, GC08-Y_geochem.csv, GC08-Z_geochem.csv, GC09-Y_geochem.csv, GC09-Z_geochem.csv, J2-1418-PC03_geochem.csv, J2-1418-PC04_geochem.csv, J2-1418-PC06_geochem.csv, J2-1418-PC08_geochem.csv, J2-1418-PC12_geochem.csv, J2-1418-PC15_geochem.csv, J2-1419-PC01_geochem.csv, J2-1419-PC02_geochem.csv, J2-1419-PC05_geochem.csv, J2-1419-PC08_geochem.csv, J2-1419-PC11_geochem.csv, J2-1419-PC14_geochem.csv, J2-1420-PC01_geochem.csv, J2-1420-PC02_geochem.csv, J2-1420-PC05_geochem.csv, J2-1420-PC08_geochem.csv, J2-1420-PC11_geochem.csv, J2-1420-PC14_geochem.csv, J2-1421-PC01_geochem.csv, J2-1421-PC02_geochem.csv, J2-1421-PC05_geochem.csv, J2-1422-PC01_geochem.csv, J2-1422-PC04_geochem.csv, J2-1422-PC07_geochem.csv, J2-1422-PC10_geochem.csv, J2-1422-PC13_geochem.csv, J2-1424-PC01_geochem.csv, J2-1424-PC04_geochem.csv, J2-1424-PC07_geochem.csv, J2-1424-PC10_geochem.csv, J2-1424-PC13_geochem.csv, J2-1425-PC01_geochem.csv, J2-1426-PC01_geochem.csv, J2-1426-PC04_geochem.csv, J2-1426-PC07_geochem.csv, J2-1426-PC10_geochem.csv, J2-1426-PC13_geochem.csv

Entity_Type_Definition:

Comma-separated value (CSV) files containing XRF data. The first row is a header row. The file name corresponds to the core id. TN403_CoreLocations contains the latitude, longitude, and water depth for each core id. Values of -9999 indicate that the XRF measurements are not available. The ranges listed in the following attributes represent the combined range domains for all files.

Entity_Type_Definition_Source: Producer defined

Attribute:

Attribute_Label: core_depth_cm
Attribute_Definition: Measured depth below top of core liner
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.0
Range_Domain_Maximum: 150.0
Attribute_Units_of_Measure: centimeters
Attribute_Measurement_Resolution: .1

Attribute:

Attribute_Label: XRF_TotalCounts
Attribute_Definition:

The total number of X-ray photons detected by the XRD during a measurement. Values of -9999 indicate that data are not available.