A.A. Boggess B.J. Buczkowski J.D. Chaytor 20230605 1.0 spreadsheet data release DOI:10.5066/P9H74BAX Woods Hole Coastal and Marine Science Center, Woods Hole, MA U.S. Geological Survey, Coastal and Marine Hazards and Resources Program https://doi.org/10.5066/P9H74BAX https://www.sciencebase.gov/catalog/item/6436e5a5d34ee8d4addcb351 A.A. Boggess B.J. Buczkowski J.D. Chaytor 2023 1.0 data release DOI:10.5066/P9H74BAX Reston, VA U.S. Geological Survey Suggested citation: Boggess, A.A., Buczkowski, B.J., and Chaytor, J.D., 2023, Sedimentological and geotechnical analyses of marine sediment cores from the Currituck Landslide Complex and upper slope adjacent to Baltimore Canyon collected on USGS Field Activity 2012-007-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P9H74BAX. https://doi.org/10.5066/P9H74BAX https://www.sciencebase.gov/catalog/item/64355a3dd34ee8d4addacd40 Twenty-four piston cores (and associated trigger cores) were collected from the source zone of the Currituck Landslide Complex and upper slope adjacent to Baltimore Canyon by the U.S. Geological Survey and the University of Rhode Island Department of Ocean Engineering during an eight-day cruise aboard the R/V Hugh R. Sharp in September/October of 2012. These cores were analyzed for evidence of seafloor mass transport processes, with an emphasis on constraining the age and shallow stratigraphy of the landslide complex. Sedimentological and geotechnical characterization of the cores was carried out through whole core imaging and description, followed by analysis of discrete samples at the USGS Woods Hole Coastal and Marine Science Center's Sediment Analysis Laboratory and other facilities, including grain-size, CaCO3 content, mineral composition, and bulk index properties (e.g., undrained shear strength and water content), micropaleontologic separations, and geochronology. This data release contains the results of these core descriptions and results of the laboratory analyses. The data provides a comprehensive understanding of the nature and properties of the sediments found in this geographic location. Core collection locations provide a geospatial reference for the analytical data gathered through analyses. Cores were collected on the Hugh R. Sharp cruise HRS1209 from September 28, 2012 to October 4, 2012, and currently reside in the Woods Hole Coastal and Marine Science Center's core repository. Information about USGS Field Activity 2012-007-FA is available at https://cmgds.marine.usgs.gov/fan_info.php?fan=2012-007-FA. 20120928 20121004 ground condition Complete None planned -74.75693 -73.6337 38.0064 36.14594 ISO 19115 Topic Category oceans geoscientificInformation None U.S. Geological Survey USGS Woods Hole Coastal and Marine Science Center WHCMSC sediment samples cores piston cores trigger cores Cruise ID HRS1209 WHCMSC Field Activity 2012-007-FA Hugh R. Sharp coring locations latitude longitude water depth USGS Thesaurus piston coring clay deposits unconsolidated deposits sedimentology drilling and coring geolocation measurement GPS measurement Holocene USGS Metadata Identifier USGS:6436e5a5d34ee8d4addcb351 None Currituck Landslide Baltimore Canyon Atlantic U.S. Continental Shelf Virginia North Carolina Maryland None. Not to be used for navigation. The public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of the dataset. Jason D. Chaytor U.S. Geological Survey, Northeast Region Research Geologist mailing and physical

384 Woods Hole Road

Woods Hole MA 02543 US 508-548-8700 x2351 jchaytor@usgs.gov https://www.sciencebase.gov/catalog/file/get/6436e5a5d34ee8d4addcb351?name=HRS1209_CoreLocations.jpg&allowOpen=true Browse image of the core collection locations. JPEG Microsoft Windows 10 Enterprise Version 10.0.18363 (Build 18363) The research vessel was equipped with multiple GPS units to ensure location accuracy in the field, water depths were recorded using the vessels onboard sonar. DGPS positions are at expected locations. This is a complete list of all 24 piston and associated trigger cores collected on the Hugh R. Sharp HRS1209 cruise in 2012. Horizontal location accuracy is less than 1 meter. Water depth accuracy is within 1 meter, measured with Knudsen 3260 chirp sonar and confirmed with a lead line. Cores were collected on board the Hugh R. Sharp during the HRS1209, also known by its USGS field activity number 2012-007-FA. A piston corer was deployed from the side of the vessel and sediment was captured in core liner tubes. Core locations were recorded with the Hugh R. Sharp DGPS system, along with water depth and core length. Upon retrieval, if necessary, the cores were cut into sections up to 1.5 meters in length. 2012 Jason D. Chaytor U.S. Geological Survey, Northeast Region Research Geologist mailing address

384 Woods Hole Road

Woods Hole MA 02543 US 508-548-8700 x2351 jchaytor@usgs.gov Coring locations were derived from GPS navigation device attached to the coring equipment. Core collection data was extracted from navigation based on the time at bottom mark, and the points were compiled into a CSV spreadsheet. 2021 Allyson A. Boggess U.S. Geological Survey, NORTHEAST REGION Geologist mailing address

384 Woods Hole Road

Woods Hole MA 02543 US 508-548-8700 x2341 508-457-2310 aboggess@usgs.gov Point Point 24 0.0197608011 0.0246515591 Decimal seconds WGS_1984 WGS_84 6378137.0 298.257223563 Local surface 1 meters Explicit depth coordinate included with horizontal coordinates EN577_CoreLocations.csv Comma Separated Value (CSV) file containing core collection and location information for piston cores collected from the Currituck Landslide Complex and upper slope adjacent to Baltimore Canyon. Producer Defined Core_ID Sediment core identifier assigned in the field. Naming convention: HRS1209-XXPC (HRS1209 = cruise ID) (XX= core ID number) (PC=piston core). USGS character string Core_Type Type of core, pertaining to the device used for collection. USGS Piston Core collected with piston corer Producer defined Date_Collected_MM/DD/YYYY_local Local date that the core was collected. Date format: MM/DD/YYYY (MM=month) (DD=day) (YYYY=year). USGS character string Time_local Local time that the core was collected. Time format: HH:MM (HH= hours in 24-hour format) (MM=minutes). USGS character string Date_Collected_MM/DD/YYYY_utc Corrected universal time (UTC) date that the core was collected. Date format: MM/DD/YYYY (MM=month) (DD=day) (YYYY=year). USGS character string Time_utc Corrected universal time (UTC) time that the core was collected. Time format: HH:MM (HH= hours in 24-hour format) (MM=minutes). USGS character string NaN No data collected USGS Latitude_DD Latitude at which core was collected. USGS 36.145940 38.006400 decimal degrees Longitude_DD Longitude at which core was collected. USGS -74.756930 -73.633700 decimal degrees Water_Depth_m_multibeam Water depth at location where core was collected from the multibeam. USGS 532 1916 meters below sea level NaN No data collected USGS Water_Depth_m_35kHz Water depth at location where core was collected from the 35kHz. USGS 339 1923 meters below sea level NaN No data collected USGS Wire_Out_m Length of wire let out during core descent. USGS 327 1896 meters NaN No data collected USGS ? Data were collected but results are either uncertain or unlocatable USGS Time_at_Bottom_utc Corrected universal time (UTC) time that the core reached the seabed. Time format: HH:MM (HH= hours in 24-hour format) (MM=minutes). USGS character string Time_on_Surface_utc Corrected universal time (UTC) time that the core reached the water surface after collection. Time format: HH:MM (HH= hours in 24-hour format) (MM=minutes). USGS character string NaN No data collected USGS ? Data were collected but results are either uncertain or unlocatable USGS Deployed_Length_cm Length of core barrel upon deployment. USGS 900 900 centimeters Producer defined Recovered_Length_cm Length of piston core recovered during collection. USGS 0 835 centimeters Trigger_Length_cm Length of the associated trigger core recovered from piston core locations. USGS 0 92 centimeters Sections Number of sections recovered from the core. Sections are ideally cut into 150 cm lengths, but this may vary depending on overall length of the core, condition of the liner, or other factors. USGS 0 6 number of sections U.S. Geological Survey - ScienceBase mailing and physical

Denver Federal Center, Building 810, Mail Stop 302

Denver CO 80225 United States 1-888-275-8747 sciencebase@usgs.gov The dataset includes the data file (HRS1209_CoreLocations.csv), the browse graphic HRS1209_BrowseGraphic.png), and the FGDC CSDGM metadata in XML format (HRS1209_CoreLocations_Metadata.xml). 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. CSV Microsoft Excel 2008 The dataset contains core location information in CSV format. 0.003 https://www.sciencebase.gov/catalog/file/get/6436e5a5d34ee8d4addcb351 https://www.sciencebase.gov/catalog/item/6436e5a5d34ee8d4addcb351 https://doi.org/10.5066/P9H74BAX The first link is to download the data in a ZIP file. The second link is to the dataset landing page where files can be downloaded individually. The third link is to the main landing page of the data release. None 20230605 Allyson A. Boggess U.S. Geological Survey, NORTHEAST REGION Geologist mailing address

384 Woods Hole Road

Woods Hole MA 02543 US 508-548-8700 x2341 508-457-2310 whsc_data_contact@usgs.gov The metadata contact email address is a generic address in the event the person is no longer with USGS. FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998