Information on 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: 20240326
Title:

Information on 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 core information such as core IDs, section numbers, lengths, depth intervals, and locations from sediment cores collected in southern Cascadia (offshore northern California) aboard the M/V Bold Horizon in September-October 2019. An inventory of core section CT, MSCL, and photograph scan files available in this data release are listed here.

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. This region marks 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. To gain a better understanding of the geologic hazards of the region, 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, the USGS collected sediment cores to enable a detailed investigation of southern Cascadia’s geologic history and ongoing activity.

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:af69a1fa-36ed-4c05-a925-61a376a2b994

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: core analysis
Theme_Keyword: ocean processes
Theme_Keyword: sediment transport

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

Cross_Reference:

Citation_Information:

Originator: Balster-Gee, A.F.
Originator: Hill, J.C.
Originator: Watt, J.T.
Originator: Brothers, D.S.
Originator: Nieminski, N.M.
Originator: Alongi, T.
Originator: Hatcher, G.A.
Originator: Nasr, B.M.
Publication_Date: 2017
Title:

Multichannel minisparker seismic-reflection and chirp subbottom data collected offshore Northern California during USGS field activity 2019-643-FA

Other_Citation_Details:

Balster-Gee, A.F., Hill, J.C., Watt, J.T., Brothers, D.S., Nieminski, N.M., Alongi, T., Hatcher, G.A., Nasr, B.M., 2023, Multichannel minisparker seismic-reflection and chirp subbottom data collected offshore Northern California during USGS field activity 2019-643-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P998EC72. Seismic data collected during field activity 2019-643-FA by the USGS linked here for user interest.

Online_Linkage: https://doi.org/10.5066/P998EC72.

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. Some cells are intentionally left blank if there was no recovery of the core or other issues with core quality. These issues are noted in the ‘notes’ column.

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 percent 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)). No formal vertical accuracy tests were conducted.

Lineage:

Process_Step:

Process_Description:

Cores were collected aboard MV 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). Gravity cores (GC) were collected with the same JPC system in two localities. JPCs and GCs were extruded and sectioned at sea. The cores were then transported back to the USGS Pacific Coastal and Marine Science Center.

Process_Date: 2019

Process_Step:

Process_Description:

Cores were scanned, split, and sampled at the USGS Pacific Coastal and Marine Science Center core lab in Santa Cruz, CA.

Process_Date: 2020

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: 179

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 for water depth
Depth_Resolution: 0.5
Depth_Distance_Units: meters
Depth_Encoding_Method: Attribute values

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: 2019-643-FA_cores.csv
Entity_Type_Definition:

Comma separated value text file with name, location, and length/depth information for each core section, and an inventory of CT, MSCL, and linescan files.

Entity_Type_Definition_Source: Producer defined

Attribute:

Attribute_Label: core_id
Attribute_Definition: The unique identifier for a core site.
Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:

Unrepresentable_Domain:

Identifier for the type of core (for example, GC- for gravity core, JPC- for jumbo piston core, TC- for trigger core) followed by a unique number for the core site.

Attribute:

Attribute_Label: section_number
Attribute_Definition:

Section number of core. If blank, core was not used for analyses or not recovered.

Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1
Range_Domain_Maximum: 6
Attribute_Units_of_Measure: sections

Attribute:

Attribute_Label: section_length_cm
Attribute_Definition:

Length of an individual core section. If blank, core was not used for analyses or not recovered.

Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 5.5
Range_Domain_Maximum: 152.0
Attribute_Units_of_Measure: cm

Attribute:

Attribute_Label: section_top_cm
Attribute_Definition:

Depth at top of core section in centimeters. If blank, core was not used for analyses or not recovered.

Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.0
Range_Domain_Maximum: 564.8
Attribute_Units_of_Measure: cm

Attribute:

Attribute_Label: section_bottom_cm
Attribute_Definition:

Depth at bottom of core section in centimeters. If blank, core was not used for analyses or not recovered.

Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 8.3
Range_Domain_Maximum: 715.6
Attribute_Units_of_Measure: cm

Attribute:

Attribute_Label: total_core_length_cm
Attribute_Definition:

Sum of all section lengths in a core. If blank, core was not used for analyses or not recovered.

Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 8.3
Range_Domain_Maximum: 715.6
Attribute_Units_of_Measure: cm

Attribute:

Attribute_Label: latitude
Attribute_Definition: Latitude of sample in decimal degrees, North
Attribute_Definition_Source: Onboard Hemishphere V110 GPS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 40.57770
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: Onboard Hemishphere V110 GPS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -124.94707
Range_Domain_Maximum: -124.17528
Attribute_Units_of_Measure: decimal degrees

Attribute:

Attribute_Label: water_depth_m
Attribute_Definition: Depth of seafloor at core location
Attribute_Definition_Source:

Estimated from position on bathymetry datasets (see vertical positional accuracy report).

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 55
Range_Domain_Maximum: 1280
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: date_collected
Attribute_Definition: Date of core collection in mm/dd/yyyy format.
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 9/30/2019
Range_Domain_Maximum: 10/08/2019
Attribute_Units_of_Measure: date

Attribute:

Attribute_Label: ct_file_xz
Attribute_Definition:

Filename of associated TIFF file of coronal (XZ) CT image of core section. Blank values indicate CT scans were not collected.

Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:

Unrepresentable_Domain:

Filenames start with the FA number (2019_643_FA) followed by the core id, section number, 'XZView' and end with .tif file extension.

Attribute:

Attribute_Label: ct_file_yz
Attribute_Definition:

Filename of associated TIFF file of saggital (YZ) CT image of core section. Blank values indicate CT scans were not collected.

Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:

Unrepresentable_Domain:

Filenames start with the FA number (2019_643_FA) followed by the core id, section number, and 'YZView' and end with .tif file extension.

Attribute:

Attribute_Label: photo_file
Attribute_Definition:

Filename of associated TIFF file of core section photograph. Blank values indicate photographs were not collected.

Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:

Unrepresentable_Domain:

Filenames start with the FA number (2019_643_FA) followed by the core id and section number and end with .tif file extension.

Attribute:

Attribute_Label: mscl_file
Attribute_Definition:

Filename of associated CSV file containing MSCL data. Blank values indicate MSCL data were not collected.

Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:

Unrepresentable_Domain:

Filenames start with the FA number (2019_643_FA) followed by the core id and end with .csv file extension.

Attribute:

Attribute_Label: notes
Attribute_Definition:

Notes on poor quality of core or recovery that explain why some core analyses were not performed. Notes are blank if there was no issue with the core quality.

Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:

Unrepresentable_Domain:

'material disturbed', 'bagged in intervals', 'no recovery', 'imploded liner'

Overview_Description:

Entity_and_Attribute_Overview: The first line of the csv file is a header line.
Entity_and_Attribute_Detail_Citation: Producer defined

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:

Core information is provided in a comma separated value (CSV) text file (2019-643-FA_cores.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: 2024
Format_Information_Content: Comma separated value (csv) text file of core information.

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.csv in the Sampling Data section.

Fees: None.

Technical_Prerequisites:

CSV files can be viewed with any standard table editing software (for example, excel, numbers).

Metadata_Reference_Information:

Metadata_Date: 20240326
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

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