Metadata: Identification_Information: Citation: Citation_Information: Originator: Nancy G. Prouty Originator: Miranda Baker Publication_Date: 20241121 Title: Sediment core pore fluid chemistry measurements collected along the Cascadia margin for the FK190612 expedition in June 2019. Geospatial_Data_Presentation_Form: comma-separated text Series_Information: Series_Name: data release Issue_Identification: DOI: 10.5066/P1VR2IYU 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/P1VR2IYU Online_Linkage: https://www.sciencebase.gov/catalog/item/669c1ff9d34e9ac16e169dc5 Larger_Work_Citation: Citation_Information: Originator: Nancy G. Prouty Originator: Miranda Baker Originator: Pamela L. Campbell Publication_Date: 2024 Title: Geochemical analysis of authigenic carbonates, water column, and pore fluid measurements collected on the FK190612 research expedition in the north Pacific Ocean along the Cascadia margin in June 2019. Series_Information: Series_Name: data release Issue_Identification: DOI: 10.5066/P1VR2IYU Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA Publisher: U.S. Geological Survey Other_Citation_Details: Suggested Citation: Prouty, N.G., Baker, M.C., and Campbell, P.L., 2024, Geochemical analysis of authigenic carbonates, water column, and pore fluids measurements collected on the FK190612 research expedition in the north Pacific Ocean along the Cascadia margin in June 2019: U.S. Geological Survey data release, https://doi.org/10.5066/P1VR2IYU Online_Linkage: https://doi.org/10.5066/P1VR2IYU Online_Linkage: https://www.sciencebase.gov/catalog/item/668c3af5d34e463649da969c Description: Abstract: Geochemical analysis of sediment core pore fluids collected from seep fields on the FK190612 research expedition in the north Pacific Ocean along the Cascadia margin in June 2019. Samples were collected to deconvolve the different processes impacting the fluid chemistry, including hydrate dissociation and clay mineral dehydration during the smectite-illite transformation that releases inter-layer water. Purpose: These samples were collected and analyzed as part of an effort to map, quantitative survey, and sample seafloor benthic communities, associated sediment infauna, and motile organisms near seeps; characterize the physics and chemistry of sediments at seep locations and in the farfield; and geochronologic studies of authigenic carbonates to constrain the timing of methane seepage events as part of the CaMMeRA (Cascadia Margin Methane Research Action) project. 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=2019-619-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: 20190613 Ending_Date: 20190702 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: -125.1778873 East_Bounding_Coordinate: -124.6393318 North_Bounding_Coordinate: 46.9602985 South_Bounding_Coordinate: 43.0138828 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: oceans Theme_Keyword: environment Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: gas hydrate resources Theme_Keyword: geochemistry Theme_Keyword: light stable isotope analysis Theme_Keyword: chemical analysis Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords Theme_Keyword: sediment geochemistry Theme_Keyword: push coring 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:669c1ff9d34e9ac16e169dc5 Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Pacific Ocean Place_Keyword: Coquille Place: Place_Keyword_Thesaurus: NGA GEOnet Names Server (GNS) Place_Keyword: Heceta Bank Place_Keyword: Nehalem Bank Place_Keyword: Grays Canyon Place_Keyword: Astoria Canyon Place_Keyword: McArthur Escarpment 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, and the Schmidt Ocean Institute (SOI) 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: Roberto Gwiazda (Monterey Bay Aquarium Research Institute), Susan Pit (University of California at Santa Cruz), Jennifer O’keefe Suttles (USGS), Ken Marchus (University of California at Santa Barbara), Colin Carney (University of California at Santa Cruz) Native_Data_Set_Environment: Mac OS 11.4, Microsoft Excel 16.52 for Mac. Cross_Reference: Citation_Information: Originator: J.D. Cline Publication_Date: 1969 Title: Spectrophotometric determination of hydrogen sulfide in natural waters Other_Citation_Details: Cline, J.D., 1969, Spectrophotometric determination of hydrogen sulfide in natural waters: Limnology and Oceanography, v. 14(3), p. 454-458. Online_Linkage: https://doi.org/10.4319/lo.1969.14.3.0454 Cross_Reference: Citation_Information: Originator: B.K. Reese Originator: D.W. Finneran Originator: H.J Mills Originator: M.X. Zhu Originator: J.W. Morse Publication_Date: 2011 Title: Examination and refinement of the determination of aqueous hydrogen sulfide by the methylene blue method Other_Citation_Details: Reese, B.K., Finneran, D.W., Mills, H.J., Zhu, M.X., and Morese, J.W., 2011, Examination and refinement of the determination of aqueous hydrogen sulfide by the methylene blue method: Aquatic Geochemistry, v. 17, 567-582. Online_Linkage: https://doi.org/10.1007/s10498-011-9128-1 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: All geochemistry data were calibrated against known standards Logical_Consistency_Report: No formal logical accuracy tests were conducted. Completeness_Report: Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the metadata for each part of this data release carefully for additional details. Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the metadata for each part of this data release carefully for additional details. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: A formal accuracy assessment of the horizontal positional information in the data set has not been conducted. The horizontal accuracy is based on ship’s position using the navigations system; Global Navigation Satellite System (GNSS) called CNAV with an accuracy of 1 m. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: A formal accuracy assessment of the vertical positional information in the data set has not been conducted. Depth was determined using a Valeport minilPS depth sensor with a stated accuracy of 0.01 percent. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: University of California at Santa Barbara, Marine Science Institute Publication_Date: 2019 Title: Pore fluid nutrient analysis Online_Linkage: http://msi.ucsb.edu/facilities-services/analytical-lab/about Type_of_Source_Media: pore fluid lab samples Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20191101 Source_Currentness_Reference: Date when lab analyses were completed Source_Citation_Abbreviation: nutrient analysis Source_Contribution: Flow injection analysis for dissolved nutrient (nitrate, ammonia, phosphate, and silicate) concentrations. Source_Information: Source_Citation: Citation_Information: Originator: University of California at Santa Cruz, Stable Isotope Laboratory Publication_Date: 2021 Title: Pore fluid isotope analysis Online_Linkage: https://isotope.ucsc.edu Type_of_Source_Media: pore fluid lab samples Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20210811 Source_Currentness_Reference: Date when lab analyses were completed Source_Citation_Abbreviation: Oxygen (delta-O-18) and Hydrogen (delta-D) analysis of water Source_Contribution: A Picarro L2130-i isotope analyzer was used to determine pore fluid stable istopes of oxygen and hydrogen in water. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey, Woods Hole Coastal and Marine Science Center Publication_Date: 2019 Title: pore fluid sulfide analysis Online_Linkage: https://www.usgs.gov/centers/whcmsc/science/analytical-facilities?qt-science_center_objects=0#qt-science_center_objects Type_of_Source_Media: pore fluid lab samples Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20191211 Source_Currentness_Reference: Date when lab analyses were completed Source_Citation_Abbreviation: sulfide Source_Contribution: Sulfide samples were analyzed spectrophotometrically following the methylene blue method (Cline SiL 1969; Reese and others, 2011) using a Thermo Scientific GENESYS 20 spectrophotometer (1 cm cell, 670 nanometer wavelength). The detection limit was determined as 2 times the concentration of the reagent blank (Reese and others 2011) or LOD =1 micromolar. Quality assurance included replicate analysis of prepared standards and field samples. Average coefficient of variation of replicates for this sample set was less than 1 percent. Source_Information: Source_Citation: Citation_Information: Originator: Monterey Bay Aquarium Research Institute (MBARI) Publication_Date: 2019 Title: Pore fluid anion analysis Type_of_Source_Media: Pore fluid lab samples Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20190905 Source_Currentness_Reference: Date when lab analyses were completed Source_Citation_Abbreviation: anions (sulfate and chloride) Source_Contribution: Dissolved anion concentrations, chloride (Cl-) and sulfate (SO42-) were analyzed using a DX-120 ion chromatograph ion chromatograph at Monterey Bay Aquarium Research Institute (MBARI). Pore water samples were filtered through 0.22 micron filters, diluted 1:100 with milli-Q water, and injected into a Dionex DX-120 ion chromatograph. Bracketing standards were run every five samples. Long-term reproducibility of Cl- and SO42-concentration measurements is 3.2 percent (2 sigma). Process_Step: Process_Description: Sediment push cores were collected using the remotely operated vehicle (ROV) SuBastian (Schmidt Ocean Institute) and pore fluids were extracted using Rhizon samplers (0.15-micron pore size). Pore fluid samples were analyzed by several different labs (see Sources) for different variables. Data from all lab analyses were combined into a single document. -9999 cell value indicates no data (for example, where water sample was not analyzed for a particular variable given sample volume limitations). Source_Used_Citation_Abbreviation: nutrient analysis Source_Used_Citation_Abbreviation: anions Source_Used_Citation_Abbreviation: sulfide Source_Used_Citation_Abbreviation: Oxygen (delta-O-18) and Hydrogen (delta-D) Process_Date: 2021 Source_Produced_Citation_Abbreviation: lab data Process_Step: Process_Description: Sediment Pore fluid data were combined into a single document (FK109612_Porefluid_data.csv). Source_Used_Citation_Abbreviation: lab data Process_Date: 2021 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: 216 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.0000001 Longitude_Resolution: 0.0000001 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-separated text file with the first line being a header line. Entity_Type_Definition: Output from chemical analysis of pore fluid samples collected from push cores Entity_Type_Definition_Source: Producer defined. Attribute: Attribute_Label: Station Attribute_Definition: Name of ROV station which samples and measurements were collected based on cruise (FK190612=Falkor and cruise start date (190612) and consecutive ROV SuBastian dive number (for example, S257). Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Unrepresentable_Domain: List of station names Attribute: Attribute_Label: Date Attribute_Definition: Sample collection date Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2019-06-13 Range_Domain_Maximum: 2019-07-02 Attribute_Units_of_Measure: YYYY-MM-DD Attribute: Attribute_Label: Site ID Attribute_Definition: General site sample was collected based on site abbreviation (AC=Astoria Canyon; Grays=Grays Canyon; Heceta=Heceta Bank; Coquille; Nehalem; McArthur) and estimate water depth in m (for example, 550 m). Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Unrepresentable_Domain: List of site IDs Attribute: Attribute_Label: Cruise Sample ID Attribute_Definition: Unique cruise sample ID based on ROV SuBastian dive number (for example, S257) and consecutive sample number (for example, 007). Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Unrepresentable_Domain: List of cruise sample IDs Attribute: Attribute_Label: Latitude Attribute_Definition: Latitude of sample location Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 43.0138828 Range_Domain_Maximum: 46.9602985 Attribute_Units_of_Measure: decimal degrees Attribute_Measurement_Resolution: 0.0000001 Attribute: Attribute_Label: Longitude Attribute_Definition: Longitude of sample location Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -125.1778873 Range_Domain_Maximum: -124.6393318 Attribute_Units_of_Measure: decimal degrees Attribute_Measurement_Resolution: 0.000001 Attribute: Attribute_Label: Depth Attribute_Definition: Depth from the surface Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 184.726 Range_Domain_Maximum: 1352.950 Attribute_Units_of_Measure: meters Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: Push core number Attribute_Definition: Number of push core Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3 Range_Domain_Maximum: 32 Attribute_Units_of_Measure: unitless Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: Core depth Attribute_Definition: Vertical depth in push core from top of sediment. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0 Range_Domain_Maximum: 20.5 Attribute_Units_of_Measure: cm Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Chloride Attribute_Definition: Pore fluid chloride concentration. Values of -9999 indicate the parameter was not measured. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 499.83 Range_Domain_Maximum: 580.71 Attribute_Units_of_Measure: millimolar Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Sulfate Attribute_Definition: Pore fluid sulfate concentration. Values of -9999 indicate the parameter was not measured. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.75 Range_Domain_Maximum: 41.05 Attribute_Units_of_Measure: millimolar Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Sulfide Attribute_Definition: Pore fluid sulfide concentration with dilution Factor due to 0.5mL Zinc Acetate addition. Values of -9999 indicate the parameter was not measured. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0009 Range_Domain_Maximum: 0.1218 Attribute_Units_of_Measure: millimolar Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: delta-O-18 Attribute_Definition: delta-O-18 is a measure of the ratio of stable isotopes Oxygen-18:Oxygen-16 in water, reported in parts per thousand (per mil). Values of -9999 indicate the parameter was not measured. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -1.18 Range_Domain_Maximum: 1.82 Attribute_Units_of_Measure: per mil Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: delta-D Attribute_Definition: delta-D is a measure of the ratio of stable isotopes Hydrogen (deuterium)-2:Hydrogen-1 in water, reported in parts per thousand (per mil). Values of -9999 indicate the parameter was not measured. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -2.20 Range_Domain_Maximum: 7.67 Attribute_Units_of_Measure: per mil Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: phosphate Attribute_Definition: Dissolved inorganic phosphate concentration. Values of -9999 indicate the parameter was not measured. Attribute_Definition_Source: standard reporting value in inorganic chemistry Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.04 Range_Domain_Maximum: 135.68 Attribute_Units_of_Measure: micromole per liter of seawater Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Silicate Attribute_Definition: Dissolved inorganic silicate concentration. Values of -9999 indicate the parameter was not measured Attribute_Definition_Source: standard reporting value in inorganic chemistry Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.14 Range_Domain_Maximum: 628.04 Attribute_Units_of_Measure: micromole per liter of seawater Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Nitrite Attribute_Definition: Dissolved inorganic nitrite concentration. Values of -9999 indicate the parameter was not measured Attribute_Definition_Source: standard reporting value in inorganic chemistry Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.02 Range_Domain_Maximum: 13.46 Attribute_Units_of_Measure: micromole per liter of seawater Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Nitrate and Nitrite Attribute_Definition: Dissolved inorganic nitrate and nitrite concentration. Values of -9999 indicate the parameter was not measured Attribute_Definition_Source: standard reporting value in inorganic chemistry Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.08 Range_Domain_Maximum: 39.42 Attribute_Units_of_Measure: micromole per liter of seawater Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Ammonia Attribute_Definition: Dissolved inorganic ammonia concentration. Values of -9999 indicate the parameter was not measured Attribute_Definition_Source: standard reporting value in inorganic chemistry. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0. 19 Range_Domain_Maximum: 494.33 Attribute_Units_of_Measure: micromole per liter of seawater Attribute_Measurement_Resolution: 0.01 Overview_Description: Entity_and_Attribute_Overview: The first line of the comma-separated 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 - ScienceBase Contact_Address: Address_Type: mailing and physical Address: Denver Federal Center, Building 810, Mail Stop 302 City: Denver State_or_Province: CO Postal_Code: 80225 Contact_Voice_Telephone: 1-888-275-8747 Contact_Electronic_Mail_Address: sciencebase@usgs.gov Resource_Description: These data are available in a comma-delimited text file (FK190612_Porefluid_data.csv) which contains seawater carbonate analysis and CTD data for all collected water 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-separated text Format_Version_Number: 16.52 Format_Information_Content: comma-delimited text File_Decompression_Technique: none Transfer_Size: 0.05618 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/669c1ff9d34e9ac16e169dc5 Network_Resource_Name: https://www.sciencebase.gov/catalog/item/669c1ff9d34e9ac16e169dc5 Network_Resource_Name: https://doi.org/10.5066/P1VR2IYU Access_Instructions: Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to download the zipped file of data and metadata. The second link points to a landing page for the water parameter data and its metadata. The third link points to a landing page for the entire data release. Fees: None. Technical_Prerequisites: These data can be viewed with any text editor software. Metadata_Reference_Information: Metadata_Date: 20241121 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