Metadata: Identification_Information: Citation: Citation_Information: Originator: Jason D. Chaytor Originator: Nancy G. Prouty Publication_Date: 20220811 Title: Accelerator Mass Spectrometry (AMS) 14C radiocarbon analysis of authigenic carbonates collected offshore the U.S. Mid- and South Atlantic Geospatial_Data_Presentation_Form: comma-delimited text Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9DRU8TP 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/P9DRU8TP Larger_Work_Citation: Citation_Information: Originator: Nancy G. Prouty Originator: Jason D. Chaytor Publication_Date: 2022 Title: Geochemistry, radiocarbon, and mineralogy data of authigenic carbonates collected offshore the U.S. Mid- and South Atlantic in 2018 and 2019. Geospatial_Data_Presentation_Form: tabular digital data Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9DRU8TP Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P9DRU8TP Description: Abstract: Results are presented from Accelerator Mass Spectrometry (AMS) carbon-14 radiocarbon dating of carbonate rock samples collected from seep fields offshore the U.S. Mid- and South Atlantic in 2018 and 2019. Samples were collected as a fingerprint to past hydrocarbon seep activity, fluid source, and depositional environment. Purpose: These samples were collected as part of the Deep Sea Exploration to Advance Research on Coral/Canyon/Cold seep Habitats (DEEP SEARCH) study, a multiyear, multi-agency campaign to characterize the deep-sea ecosystems to better understand the distribution of sensitive seafloor communities to inform potential offshore energy development and other deep-sea management. Supplemental_Information: Additional information about the field activities from which these data were derived is available online at: http://cmgds.marine.usgs.gov/fan_info.php?fan=2019-620-FA http://cmgds.marine.usgs.gov/fan_info.php?fan=2019-003-FA http://cmgds.marine.usgs.gov/fan_info.php?fan=2018-042-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: 20180828 Ending_Date: 20190427 Currentness_Reference: Ground condition at time data were collected. Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -76.1907 East_Bounding_Coordinate: -74.7924 North_Bounding_Coordinate: 35.9274 South_Bounding_Coordinate: 32.4938 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: oceans Theme_Keyword: environment Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: Habitat Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: Chemical analysis Theme_Keyword: radiometric dating Theme_Keyword: carbon-14 analysis Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords Theme_Keyword: ecosystems Theme_Keyword: chemical oceanography 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: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:615770f9d34e0df5fb9fc37d Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Atlantic Ocean 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, Bureau of Ocean Energy Management (BOEM), and the National Oceanic and Atmospheric Administration (NOAA) as the originators 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 Data_Set_Credit: Jason D Chaytor (USGS WHCMSC) Native_Data_Set_Environment: Microsoft Excel for Microsoft 365 MSO Cross_Reference: Citation_Information: Originator: Minze Stuiver Originator: Henry A. Polach Publication_Date: 1977 Title: Discussion reporting of 14C data Geospatial_Data_Presentation_Form: publication Other_Citation_Details: Stuiver, M., and Polach, H.A., 1977, Discussion reporting of 14C data: Radiocarbon, v. 19, pp. 355-363. Online_Linkage: https://doi.org/10.1017/S0033822200003672 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: All samples submitted to NOSAMS are checked for accuracy via the primary standard for 14C measurements - NBS Oxalic Acid I (NIST-SRM-4990). Every group of samples processed includes an appropriate blank, analyzed concurrently. Process blank materials include but are not limited to Carrara marble (IAEA C-1) and Icelandic Doublespar (Third International Radiocarbon Intercomparison F) for inorganic carbon. Logical_Consistency_Report: Data have been check for omissions and duplicates. Completeness_Report: Dataset represents analysis of a set of subsamples from larger primary samples recovered during the field activities. Primary samples were selected for collection at a limited number of sites during dives and represent only a small portion of the exposed authigenic carbonate material. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Positioning data for HOV Alvin (AT41) and ROV Jason II (RB1903) are derived from the fusion of several different sensors installed on the underwater vehicles (doppler velocity logs, gyrocompasses and inertial navigation systems) and the surface vessels (ultra-short baseline acoustic transponders and differential/augmented GPS receivers). Based on the stated accuracy of each of the sensors on the ships and vehicles, horizontal location accuracy is expected to be be better than 10 m. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Depth accuracy based on calibrated pressure sensors is 0.1 meters Lineage: Source_Information: Source_Citation: Citation_Information: Originator: National Ocean Sciences Accelerator Mass Spectrometry (NOSAMS) facility Publication_Date: 20210913 Title: Accelerator Mass Spectrometery Carbon-14 Radiocarbon Dating Geospatial_Data_Presentation_Form: publication Online_Linkage: https://www2.whoi.edu/site/nosams/ Type_of_Source_Media: Digital and/or Hardcopy Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20210913 Source_Currentness_Reference: Date when lab analyses were completed Source_Citation_Abbreviation: AMS carbon-14 dating Source_Contribution: An accelerator mass spectrometer (AMS) was used to measure inorganic radiocarbon Process_Step: Process_Description: Authigenic carbonate samples were collected during HOV and ROV dives. Samples were rinsed with freshwater, allowed to dry, photographed and stored at room temperature. Process_Date: 2020 Process_Step: Process_Description: Authigenic carbonate samples were cut using a diamond saw to expose fresh surfaces. Subsamples were isolated using trim saws, diamond drills and hand scribes. Source_Used_Citation_Abbreviation: AMS carbon-14 dating Process_Date: 2021 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Jason Chaytor Contact_Organization: USGS Contact_Position: Research Geologist Contact_Address: Address_Type: mailing and physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543 Country: USA Contact_Voice_Telephone: (508) 457-2351 Contact_Electronic_Mail_Address: jchaytor@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: 13 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.0001 Longitude_Resolution: 0.0001 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: D_WGS_1984 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257224 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: A comma-delimited text file with the first line being a header line. Entity_Type_Definition: Output of AMS carbon-14 radiocarbon dating of authigenic carbonate samples. Entity_Type_Definition_Source: Producer defined. Attribute: Attribute_Label: Cruise ID Attribute_Definition: Identification number of DEEPSEARCH cruise on which samples were collected. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: AT41 Enumerated_Domain_Value_Definition: AT41=R/V Atlantis [AT] and sequential cruise number. The corresponding USGS Field Activity Number (FAN) for this sample collection is 2018-042-FA. Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: RB1903 Enumerated_Domain_Value_Definition: NOAA Ship Ron Brown [RB] and [20XX year, month]. The corresponding USGS Field Activity Numbers (FANs) for this sample collection are 2019-003-FA and 2019-620-FA. Enumerated_Domain_Value_Definition_Source: Producer defined Attribute: Attribute_Label: Vessel Attribute_Definition: Name of ship on which samples were collected Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: R/V Atlantis Enumerated_Domain_Value_Definition: The R/V Atlantis is a research vessel owned and operated by Woods Hole Oceanographic Institution Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: NOAA Ship Ronald H. Brown Enumerated_Domain_Value_Definition: The NOAA Ship Ronald H. Brown is a research vessel owned and operated by the National Oceanic and Atmospheric Administration (NOAA) Enumerated_Domain_Value_Definition_Source: Producer defined Attribute: Attribute_Label: Site Attribute_Definition: Site Name where samples were collected Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Unrepresentable_Domain: List of Site names Attribute: Attribute_Label: Date Collected Attribute_Definition: Date [YYYY-MM-DD] Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2018-08-28 Range_Domain_Maximum: 2019-04-27 Attribute: Attribute_Label: Sample ID Attribute_Definition: Unique cruise sample ID based on cruise ID (e.g., RB1903, AT41), submersible (J2=JASON II, AL=Alvin), dive number (e.g., 1133; 4967), sample storage location (e.g., B5=biobox 5, RB=rear biobox), and sample number (e.g., R1 with R=rock, 1=first rock collected). Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Unrepresentable_Domain: List of sample IDs Attribute: Attribute_Label: Depth Attribute_Definition: meters below sea level Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 235 Range_Domain_Maximum: 2165 Attribute_Units_of_Measure: meters Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: Latitude Attribute_Definition: Latitude of sample location Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 32.4938 Range_Domain_Maximum: 35.9274 Attribute_Units_of_Measure: decimal degrees Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Longitude Attribute_Definition: Longitude of sample location Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -76.1907 Range_Domain_Maximum: -74.7924 Attribute_Units_of_Measure: decimal degrees Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Split ID Attribute_Definition: U.S. Geological Survey (USGS) Woods Hole Coastal and Marine Science Center (WHCMSC) unique subsample ID based on the field activity number (e.g., 18042), unique cruise sample ID (e.g. A4967-R2), analysis type (e.g., RC=radiocarbon) and sequential number of subsamples analyzed Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Unrepresentable_Domain: Unique subsample ID Attribute: Attribute_Label: Date Reported Attribute_Definition: Date analysis results returned from the National Ocean Sciences Accelerator Mass Spectrometry (NOSAMS) facility Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 07/24/2020 Range_Domain_Maximum: 09/13/2021 Attribute: Attribute_Label: Type Attribute_Definition: Sample type submitted for dating Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: authigenic carbonate Enumerated_Domain_Value_Definition: material extracted from a sample of authigenic carbonate Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: mollusc Enumerated_Domain_Value_Definition: Mollusc shell extracted from authigenic carbonate sample Enumerated_Domain_Value_Definition_Source: Producer defined Attribute: Attribute_Label: Process Attribute_Definition: Method used by NOSAMS to produce CO2 from samples Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: hydrolysis Enumerated_Domain_Value_Definition: acid hydrolysis process Enumerated_Domain_Value_Definition_Source: Producer defined Attribute: Attribute_Label: Accession # Attribute_Definition: Unique analysis ID from NOSAMS Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Unrepresentable_Domain: unique analysis ID number Attribute: Attribute_Label: F Modern Attribute_Definition: The measured deviation of the 14C/12C ratio from Modern. Modern is defined as 95 percent of the 14C concentration of the National Bureau of Standards Oxalic Acid I standard (SRM 4990B) normalized to d13C VPDB (-19ppm) in 1950 AD (VPDB = Vienna Pee Dee Belemnite geological standard. Attribute_Definition_Source: standard reporting values in carbon-14 radicarbon analysis, defined in Stuiver and Polach (1977) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0658 Range_Domain_Maximum: 0.6382 Attribute_Units_of_Measure: unitless Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Fm Error Attribute_Definition: Fraction modern (Fm) Error is a measurement of the deviation of the delta-Carbon-14/delta-Carbon-12 ratio of a sample from modern carbon (Stuiver and Polach, 1977). Attribute_Definition_Source: standard reporting values in carbon-14 radicarbon analysis, defined in Stuiver and Polach (1977) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0008 Range_Domain_Maximum: 0.0016 Attribute_Units_of_Measure: unitless Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Age Attribute_Definition: Conventional Radiocarbon Age calculated using the radiocarbon decay equation (Stuiver and Polach, 1977). >Modern indicates a fraction modern greater than 1 with Modern defined as 95% of the radiocarbon concentration in AD 1950 of National Bureau of Standards Oxalic Acid I Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3,610 Range_Domain_Maximum: 21,900 Attribute_Units_of_Measure: years Attribute_Measurement_Resolution: 10 Attribute: Attribute_Label: Age Err Attribute_Definition: Standard error for Conventional Radiocarbon Age. Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 20 Range_Domain_Maximum: 170 Attribute_Units_of_Measure: years Attribute_Measurement_Resolution: 5 Attribute: Attribute_Label: d13C Attribute_Definition: Delta-C-13 is a measure of the ratio of stable isotopes Carbon-13:Carbon-12, reported in parts per thousand (per mil). Attribute_Definition_Source: defined in Stuiver and Polach (1977) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -50.93 Range_Domain_Maximum: -8.13 Attribute_Units_of_Measure: parts per thousand (per mil) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: d13C Source Attribute_Definition: Method by which d13C was obtained for the sample (measured=measured by NOSAMS during sample analysis) Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Unrepresentable_Domain: measured by the National Ocean Sciences Accelerator Mass Spectrometry (NOSAMS) facility during sample analysis Attribute: Attribute_Label: D14C Attribute_Definition: Report the D14C value as defined in Stuiver and Pollach (1977) as the relative difference between the absolute international standard (base year 1950) and sample activity corrected for age and d13C. The D14C is age corrected to account for decay that took place between collection (or death) and the time of measurement so that two measurements of the same sample made years apart will produce the same calculated D14C result. Collection year must be specified in order for D14C results to be calculated. Attribute_Definition_Source: Stuiver and Pollach (1977) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -367.05 Range_Domain_Maximum: -934.70 Attribute_Units_of_Measure: per mil Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Authigenic Carbonate Material Attribute_Definition: Type of material sampled from within the subsample (groundmass, cement, or shell) Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Cement Enumerated_Domain_Value_Definition: Secondary calcium carbonate binding groundmass components together Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Bulk Enumerated_Domain_Value_Definition: Undifferentiated subsample containing groundmass and cement or unprocessed mollusc shell material Enumerated_Domain_Value_Definition_Source: Producer defined Overview_Description: Entity_and_Attribute_Overview: The first line of the tab-delimited text file is a header line. Entity_and_Attribute_Detail_Citation: U.S. Geological Survey Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: GS ScienceBase Contact_Address: Address_Type: mailing address Address: Denver Federal Center, Building 810, Mail Stop 302 City: Denver State_or_Province: CO Postal_Code: 80225 Country: United States Contact_Voice_Telephone: 1-888-275-8747 Contact_Electronic_Mail_Address: sciencebase@usgs.gov Resource_Description: These data are available in a text file (DEEPSEARCH_AC_radiocarbon.csv) which contains radiocarbon results from selected samples. 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_Number: 16.53 Format_Information_Content: ASCII text file File_Decompression_Technique: none Transfer_Size: 0.03 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/61576cdbd34e0df5fb9fc371 Fees: None. Technical_Prerequisites: These data can be viewed with any text editor software. Metadata_Reference_Information: Metadata_Date: 20220811 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