Identification_Information:
  Citation:
    Citation_Information:
      Originator: Qureshi, K.A.
      Originator: PetroTech Associates
      Publication_Date: 2025
      Title: Mercury injection capillary pressure results from Middle and Upper Jurassic outcrop samples in the Iniskin Peninsula area of lower Cook Inlet, Alaska
      Geospatial_Data_Presentation_Form: spreadsheet
      Series_Information:
        Series_Name: Raw Data File
        Issue_Identification: RDF 2025-10
      Publication_Information:
        Publication_Place: Fairbanks, Alaska, United States
        Publisher: Alaska Division of Geological & Geophysical Surveys
      Other_Citation_Details: 30 p.
      Online_Linkage: https://doi.org/10.14509/31522
  Description:
    Abstract: Mercury injection capillary pressure results from Middle and Upper Jurassic outcrop samples in the Iniskin Peninsula area of lower Cook Inlet, Alaska, Raw Data File 2025-10, provides mercury-injection capillary pressure (MICP) analysis performed for 53 outcrop samples collected from three measured sections. Six samples are from the Gaikema Sandstone of the Middle Jurassic Tuxedni Group; 47 samples are from the Paveloff Siltstone of the Middle Jurassic Chinitna Formation; 1 additional sample collected in 2009 (09BG010) from the lower sandstone member of the Upper Jurassic Naknek Formation is also included in this report. The MICP analysis determines the pore system properties using bulk volume, pore volume, and pore system size distribution. These data are useful in evaluating the hydrocarbon or carbon dioxide seal capacity of rocks. These data and report are available from the DGGS website: http://doi.org/10.14509/31522.
    Purpose: Cook Inlet basin analysis program aimed at developing a better understanding of the near-margin stratigraphic and structural components of the Cook Inlet petroleum system. These data are useful in evaluating the hydrocarbon or carbon dioxide seal capacity of rocks.
    Supplemental_Information:
      >MICP-data:    Analytical lab data and accompanying data dictionary	
      >sample-summary:    Summary data spreadsheet and accompanying data dictionary
  Time_Period_of_Content:
    Time_Period_Information:
      Range_of_Dates/Times:
        Beginning_Date: 2013
        Ending_Date: 2025
    Currentness_Reference: ground condition
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: None planned
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -153.280755
      East_Bounding_Coordinate: -153.168321
      North_Bounding_Coordinate: 59.816305
      South_Bounding_Coordinate: 59.662582
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: ISO 19115 Topic Category
      Theme_Keyword: geoscientificInformation
    Theme:
      Theme_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys
      Theme_Keyword: Aleutian Arc
      Theme_Keyword: Analyses
      Theme_Keyword: Analyses and Sampling
      Theme_Keyword: Analytical Results
      Theme_Keyword: Bedrock
      Theme_Keyword: Bedrock Geology
      Theme_Keyword: Depositional Environment
      Theme_Keyword: DGGS
      Theme_Keyword: Energy
      Theme_Keyword: Energy Resources
      Theme_Keyword: Forearc Basin
      Theme_Keyword: Gas Basins
      Theme_Keyword: Gas Seal Potential
      Theme_Keyword: Geochemical Data
      Theme_Keyword: Geochemistry
      Theme_Keyword: Geologic
      Theme_Keyword: Geologic Map
      Theme_Keyword: Geology
      Theme_Keyword: Marine Sedimentation
      Theme_Keyword: Mercury Injection Capillary Pressure Analysis
      Theme_Keyword: Oil and Gas
      Theme_Keyword: Oil and Gas Basin
      Theme_Keyword: Oil Basins
      Theme_Keyword: Outcrop Samples
      Theme_Keyword: Permeability
      Theme_Keyword: Petroleum
      Theme_Keyword: Petroleum Basin Study
      Theme_Keyword: Porosity
      Theme_Keyword: Reservoir
      Theme_Keyword: Reservoir Evaluation
      Theme_Keyword: Reservoir Quality
      Theme_Keyword: Resources
      Theme_Keyword: Sample Location
      Theme_Keyword: Sedimentary
      Theme_Keyword: Sedimentary Rocks
      Theme_Keyword: STATEMAP Project
      Theme_Keyword: Stratigraphy
    Place:
      Place_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys
      Place_Keyword: Cook Inlet
      Place_Keyword: Gaikema Creek
      Place_Keyword: Iniskin Peninsula
      Place_Keyword: Southcentral Alaska
    Stratum:
      Stratum_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys
      Stratum_Keyword: Chinitna Formation
      Stratum_Keyword: Gaikema Sandstone
      Stratum_Keyword: Naknek Formation
      Stratum_Keyword: Paveloff Siltstone Member
      Stratum_Keyword: Tuxedni Group
    Temporal:
      Temporal_Keyword_Thesaurus: Walker, J.D., Geissman, J.W., Bowring, S.A, and Babcock, L.E., comp., 2012, Geologic Time Scale v. 4.0: Geological Society of America
      Temporal_Keyword: Jurassic
      Temporal_Keyword: Middle Jurassic
  Access_Constraints: This report, map, and/or dataset is available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below).
  Use_Constraints: Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. The user specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.
  Point_of_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: Alaska Division of Geological & Geophysical Surveys
      Contact_Position: Metadata Manager
      Contact_Address:
        Address_Type: mailing and physical
        Address: 3354 College Road
        City: Fairbanks
        State_or_Province: AK
        Postal_Code: 99709-3707
        Country: USA
      Contact_Voice_Telephone: (907)451-5020
      Contact_Facsimile_Telephone: (907)451-5050
      Contact_Electronic_Mail_Address: dggspubs@alaska.gov
      Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays
      Contact_Instructions: Please view our website (https://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible.
  Data_Set_Credit: This work was funded by the U.S. Geological Survey STATEMAP bedrock geologic map of the Iniskin Peninsula area, lower Cook Inlet, Alaska (grant no. G13AC00157, 2013) and the State of Alaska Cook Inlet Basin Analysis Capital Improvement Project (CIP). We thank the field geologists who collected most of the samples used in this study, Simone Montayne for her assistance with metadata, and Melanie Werdon for her review.
  Cross_Reference:
    Citation_Information:
      Originator: Betka, P.M.
      Originator: Gillis, R.J.
      Publication_Date: 2014
      Title: Preliminary characterization of brittle deformation on the Iniskin Peninsula: Implications for the kinematic history of the Bruin Bay fault system, lower Cook Inlet, Alaska
      Series_Information:
        Series_Name: Preliminary Interpretive Report
        Issue_Identification: PIR 2014-5
      Publication_Information:
        Publication_Place: Fairbanks, Alaska, United States
        Publisher: Alaska Division of Geological & Geophysical Surveys
      Other_Citation_Details: 14 p
      Online_Linkage: https://doi.org/10.14509/29130
  Cross_Reference:
    Citation_Information:
      Originator: Gillis, R.J.
      Publication_Date: 2014
      Title: Cook Inlet program 2013 field studies: Observations and preliminary interpretations from new 1:63,360-scale geologic mapping of the Iniskin Peninsula, lower Cook Inlet, Alaska
      Series_Information:
        Series_Name: Preliminary Interpretive Report
        Issue_Identification: PIR 2014-2
      Publication_Information:
        Publication_Place: Fairbanks, Alaska, United States
        Publisher: Alaska Division of Geological & Geophysical Surveys
      Other_Citation_Details: 31 p
      Online_Linkage: https://doi.org/10.14509/27303
  Cross_Reference:
    Citation_Information:
      Originator: Gillis, R.J.
      Originator: Wartes, M.A.
      Originator: Herriott, T.M.
      Originator: Bull, K.F.
      Originator: Decker, P.L.
      Originator: Betka, P.M.
      Publication_Date: 2014
      Title: Overview of new 1:63,360-scale geologic mapping of the Iniskin Peninsula, lower Cook Inlet, Alaska
      Series_Information:
        Series_Name: Preliminary Interpretive Report
        Issue_Identification: PIR 2014-2-1
      Publication_Information:
        Publication_Place: Fairbanks, Alaska, United States
        Publisher: Alaska Division of Geological & Geophysical Surveys
      Other_Citation_Details: p. 3-6
      Online_Linkage: https://doi.org/10.14509/27306
  Cross_Reference:
    Citation_Information:
      Originator: Helmold, K.P.
      Originator: Stanley, R.G.
      Publication_Date: 2015
      Title: Petrology and reservoir quality of the Gaikema Sandstone: Initial impressions
      Series_Information:
        Series_Name: Preliminary Interpretive Report
        Issue_Identification: PIR 2015-5-7
      Publication_Information:
        Publication_Place: Fairbanks, Alaska, United States
        Publisher: Alaska Division of Geological & Geophysical Surveys
      Other_Citation_Details: p. 43-48
      Online_Linkage: https://doi.org/10.14509/29462
  Cross_Reference:
    Citation_Information:
      Originator: Herriott, T.M.
      Publication_Date: 2016
      Title: Introduction to petroleum-related geologic studies in lower Cook Inlet during 2015, Iniskin-Tuxedni region, south-central Alaska
      Series_Information:
        Series_Name: Preliminary Interpretive Report
        Issue_Identification: PIR 2016-1-1
      Publication_Information:
        Publication_Place: Fairbanks, Alaska, United States
        Publisher: Alaska Division of Geological & Geophysical Surveys
      Other_Citation_Details: p. 1-8
      Online_Linkage: https://doi.org/10.14509/29534
  Cross_Reference:
    Citation_Information:
      Originator: Herriott, T.M.
      Originator: Wartes, M.A.
      Publication_Date: 2014
      Title: Brief overview of geologic mapping of the Middle Jurassic Chinitna Formation and Upper Jurassic Naknek Formation in the Tilted Hills, Iniskin Peninsula, Cook Inlet, Alaska
      Series_Information:
        Series_Name: Preliminary Interpretive Report
        Issue_Identification: PIR 2014-2-2
      Publication_Information:
        Publication_Place: Fairbanks, Alaska, United States
        Publisher: Alaska Division of Geological & Geophysical Surveys
      Other_Citation_Details: p. 7-11
      Online_Linkage: https://doi.org/10.14509/27307
  Cross_Reference:
    Citation_Information:
      Originator: Herriott, T.M.
      Publication_Date: 2016
      Title: Petroleum-related geologic studies in lower Cook Inlet during 2015, Iniskin-Tuxedni region, south-central Alaska
      Series_Information:
        Series_Name: Preliminary Interpretive Report
        Issue_Identification: PIR 2016-1
      Publication_Information:
        Publication_Place: Fairbanks, Alaska, United States
        Publisher: Alaska Division of Geological & Geophysical Surveys
      Other_Citation_Details: 78 p
      Online_Linkage: https://doi.org/10.14509/29532
  Cross_Reference:
    Citation_Information:
      Originator: Loveland, A.M.
      Originator: PetroTech Associates
      Publication_Date: 2013
      Title: Mercury injection capillary pressure (MICP) results from outcrop samples in the Naknek Formation, Iniskin Peninsula, Alaska
      Series_Information:
        Series_Name: Raw Data File
        Issue_Identification: RDF 2013-6
      Publication_Information:
        Publication_Place: Fairbanks, Alaska, United States
        Publisher: Alaska Division of Geological & Geophysical Surveys
      Other_Citation_Details: 10 p
      Online_Linkage: https://doi.org/10.14509/25494
  Cross_Reference:
    Citation_Information:
      Originator: Loveland, A.M.
      Originator: PetroTech Associates
      Publication_Date: 2014
      Title: Mercury injection capillary pressure results from outcrop samples in the Kaguyak, Naknek, and West Foreland formations, Iniskin Peninsula region, Alaska
      Series_Information:
        Series_Name: Raw Data File
        Issue_Identification: RDF 2014-1
      Publication_Information:
        Publication_Place: Fairbanks, Alaska, United States
        Publisher: Alaska Division of Geological & Geophysical Surveys
      Other_Citation_Details: 5 p
      Online_Linkage: https://doi.org/10.14509/27021
  Cross_Reference:
    Citation_Information:
      Originator: Stanley, R.G.
      Originator: Helmold, K.P.
      Originator: LePain, D.L.
      Publication_Date: 2015
      Title: Storm-influenced deltaic deposits of the Middle Jurassic Gaikema Sandstone in a measured section of the northern Iniskin Peninsula, Cook Inlet basin, Alaska
      Series_Information:
        Series_Name: Preliminary Interpretive Report
        Issue_Identification: PIR 2015-5-6
      Publication_Information:
        Publication_Place: Fairbanks, Alaska, United States
        Publisher: Alaska Division of Geological & Geophysical Surveys
      Other_Citation_Details: p. 29-42
      Online_Linkage: https://doi.org/10.14509/29461
  Cross_Reference:
    Citation_Information:
      Originator: Wartes, M.A.
      Originator: Herriott, T.M.
      Publication_Date: 2014
      Title: A new occurrence of oil-stained rocks within a small fault zone involving the Middle Jurassic Cynthia Falls Formation, Tuxedni Group, northern Iniskin Peninsula
      Series_Information:
        Series_Name: Preliminary Interpretive Report
        Issue_Identification: PIR 2014-2-5
      Publication_Information:
        Publication_Place: Fairbanks, Alaska, United States
        Publisher: Alaska Division of Geological & Geophysical Surveys
      Other_Citation_Details: p. 23-27
      Online_Linkage: https://doi.org/10.14509/27310
  Cross_Reference:
    Citation_Information:
      Originator: Wartes, M.A.
      Originator: Herriott, T.M.
      Publication_Date: 2014
      Title: Discovery of oil-stained sandstone within the Chinitna Formation, northern Iniskin Peninsula
      Series_Information:
        Series_Name: Preliminary Interpretive Report
        Issue_Identification: PIR 2014-2-6
      Publication_Information:
        Publication_Place: Fairbanks, Alaska, United States
        Publisher: Alaska Division of Geological & Geophysical Surveys
      Other_Citation_Details: p. 29-31
      Online_Linkage: https://doi.org/10.14509/27311
Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report: The accompanying report and data tables provide a comprehensive discussion of processing methods, with errors reported in the tables where applicable. This data is being released as part of the DGGS RDF series, which includes content describing approved techniques and methods for the collection, storage, visualization, analysis, and interpretation of scientific data. While the information has been reviewed by several geologists familiar with the study area, the data and report have not undergone formal review for technical content or conformity to DGGS editorial standards. For inquiries regarding analytical values or procedures, the originating lab is the best point of contact.
  Logical_Consistency_Report: Not applicable
  Completeness_Report: This data release is complete.
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report: Sample location coordinates were obtained using recreational-grade GPS units, with a typical reported accuracy of about 10 meters. Data were merged into an ArcGIS geodatabase. Coordinates were reported using the WGS84 datum. Coordinates conversion was performed from NAD27 to NAD83 in ArcGIS Pro. Sample number corresponds to measured section number and the sample position (meters above base of section) in each measured section. Coordinates refer to the base of the measured section.
  Lineage:
    Process_Step:
      Process_Description: Sample collection - DGGS field geologists collected samples from surface outcrops for MICP analysis. Sample location coordinates were obtained using recreational-grade GPS units, with a typical reported accuracy of about 10 meters. Data were merged into an ArcGIS geodatabase. Coordinates were reported using the WGS84 datum. Coordinates conversion was performed from NAD27 to NAD83 in ArcGIS Pro. Sample number corresponds to measured section number and the sample position (meters above base of section) in each measured section. Coordinates refer to the base of the measured section.
      Process_Date: 2013
    Process_Step:
      Process_Description: Sample preparation - To carry out the MICP analysis, a representative portion of each sample was trimmed to fit the sample holders and examined under reflected light microscopy to note any irregularities that might affect the data quality. The rock surfaces were cleaned of any mud or dust, and the samples were then dried to a constant weight in a low-temperature oven before being analyzed. Samples were sent for analysis to PetroTech in Houston, Texas. During capillary pressure testing, the volume of mercury injected was measured at 118 pressure points from 1.64 to 59,500 pounds per square inch absolute (psia). These data were then corrected for closure. The closure volume is the amount of mercury intrusion that occurs as the mercury conforms to the sample surface, filling any irregularities, prior to entering the pore system.
      Process_Date: 2023
    Process_Step:
      Process_Description: Analytical methods - During capillary pressure testing, the volume of mercury injected was measured at 118 pressure points from 1.64 to 59,500 pounds per square inch absolute (psia). These data were then corrected for closure. The closure volume is the amount of mercury intrusion that occurs as the mercury conforms to the sample surface, filling any irregularities, prior to entering the pore system.
      Process_Date: 2023
Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: point
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: NAD83
      Ellipsoid_Name: GRS 80
      Semi-major_Axis: 6378137
      Denominator_of_Flattening_Ratio: 298.257222101
Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: rdf2025_10-MICP-data.zip, rdf2025_10-MICP-data-dictionary.csv
      Entity_Type_Definition: Analytical lab data and accompanying data dictionary
      Entity_Type_Definition_Source: DGGS and PetroTech Associates
      Entity_Attribute_Layer_Name: MICP-data
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: rdf2025_10-sample-summary.csv, rdf2025_10-sample-summary-data-dictionary.csv
      Entity_Type_Definition: Summary data spreadsheet and accompanying data dictionary
      Entity_Type_Definition_Source: DGGS
      Entity_Attribute_Layer_Name: sample-summary
Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: Alaska Division of Geological & Geophysical Surveys
      Contact_Position: Metadata Manager
      Contact_Address:
        Address_Type: mailing and physical
        Address: 3354 College Road
        City: Fairbanks
        State_or_Province: AK
        Postal_Code: 99709-3707
        Country: USA
      Contact_Voice_Telephone: (907)451-5020
      Contact_Facsimile_Telephone: (907)451-5050
      Contact_Electronic_Mail_Address: dggspubs@alaska.gov
      Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays
      Contact_Instructions: Please view our website (https://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible.
  Resource_Description: RDF 2025-10
  Distribution_Liability: The State of Alaska makes no expressed or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.
  Standard_Order_Process:
    Non-digital_Form: DGGS publications are available as free online downloads or you may purchase paper hard-copies or digital files on CD/DVD or other digital storage media by mail, phone, fax, or email from the DGGS Fairbanks office. To purchase this or other printed reports and maps, contact DGGS by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). Payment accepted: Cash, check, money order, VISA, or MasterCard. Turnaround time is 1-2 weeks unless special arrangements are made and an express fee is paid. Shipping charge will be the actual cost of postage and will be added to the total amount due. Contact us for the exact shipping amount.
    Fees: Contact DGGS for current pricing
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: spreadsheet
        Format_Version_Date: 20250630
        Format_Information_Content: table
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: https://doi.org/10.14509/31522
    Fees: Free download
Metadata_Reference_Information:
  Metadata_Date: 20250630
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: Alaska Division of Geological & Geophysical Surveys
        Contact_Person: Simone Montayne
      Contact_Position: Metadata Manager
      Contact_Address:
        Address_Type: mailing and physical
        Address: 3354 College Road
        City: Fairbanks
        State_or_Province: AK
        Postal_Code: 99709-3707
        Country: USA
      Contact_Voice_Telephone: (907)451-5020
      Contact_Facsimile_Telephone: (907)451-5050
      Contact_Electronic_Mail_Address: dggspubs@alaska.gov
      Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays
  Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Use_Constraints: If the user has modified the data in any way they are obligated to describe the types of modifications they have performed in the supporting metadata file. User specifically agrees not to imply that changes they made were approved by the Alaska Department of Natural Resources or Division of Geological & Geophysical Surveys.
  Metadata_Extensions:
    Online_Linkage: https://dggs.alaska.gov/metadata/dggs.ext
    Profile_Name: dggs metadata extensions