• USGS National and Global Oil and Gas Assessment Project-Bighorn Basin Province, Niobrara Formation Assessment Units and Input Data Forms

    Metadata Updated: March 22, 2021

    This data release contains the boundaries of assessment units and input data for the assessment of continuous oil and gas resources of the Niobrara interval of the Cody Shale in the Bighorn Basin Province of Wyoming and Montana. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the context of the higher-level Total Petroleum System. The Assessment Unit is shown herein as a geographic boundary interpreted, defined, and mapped by the geologist responsible for the province and incorporates a set of known or postulated oil and (or) gas accumulations sharing similar geologic, geographic, and temporal properties within the Total Petroleum System, such as source rock, timing, migration pathways, trapping mechanism, and hydrocarbon type. The Assessment Unit boundary is defined geologically as the limits of the geologic elements that define the Assessment Unit, such as limits of reservoir rock, geologic structures, source rock, and seal lithologies. The only exceptions to this are Assessment Units that border the Federal-State water boundary. In these cases, the Federal-State water boundary forms part of the Assessment Unit boundary. Methodology of assessments are documented in USGS Data Series 547 for continuous assessments (https://pubs.usgs.gov/ds/547) and USGS DDS69-D, Chapter 21 for conventional assessments (https://pubs.usgs.gov/dds/dds-069/dds-069-d/REPORTS/69_D_CH_21.pdf). See supplemental information for a detailed list of files included this data release.

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    License: No license information was provided.

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    Dates

    Metadata Date August 13, 2020
    Metadata Created Date March 22, 2021
    Metadata Updated Date March 22, 2021
    Reference Date(s) October 16, 2019 (publication)
    Frequency Of Update asNeeded

    Metadata Source

    Harvested from USGS-Harvest

    Graphic Preview

    Middle Devonian Marcellus Shale Assessment Units Extent

    Additional Metadata

    Resource Type Dataset
    Metadata Date August 13, 2020
    Metadata Created Date March 22, 2021
    Metadata Updated Date March 22, 2021
    Reference Date(s) October 16, 2019 (publication)
    Responsible Party U.S. Geological Survey, Central Energy Resources Science Center (Point of Contact)
    Contact Email
    Guid
    Access Constraints Use Constraints: Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although these data have been processed successfully on a computer system at the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. The USGS or the U.S. Government shall not be held liable for improper or incorrect use of the data described and/or contained herein., Access Constraints: none
    Bbox East Long -107.4156
    Bbox North Lat 44.9360
    Bbox South Lat 43.6642
    Bbox West Long -109.0871
    Coupled Resource
    Frequency Of Update asNeeded
    Graphic Preview Description Middle Devonian Marcellus Shale Assessment Units Extent
    Graphic Preview File https://www.sciencebase.gov/catalog/file/get/5d4b2c7ce4b01d82ce8df35c?f=__disk__bc%2F79%2F93%2Fbc7993972f2fd759c3aa3c71bd1e83ed1ad816a0
    Graphic Preview Type JPEG
    Licence 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 for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty.
    Metadata Language eng; USA
    Metadata Type geospatial
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True

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