USGS National and Global Oil and Gas Assessment Project—Buda Limestone of Texas: Assessment Unit Boundaries, Assessment Input Data, and Fact Sheet Data Tables
This data release contains the boundaries of assessment units and input data for the assessment of undiscovered conventional oil and gas resources in the Buda limestone reservoir of Texas. The assessment unit is the fundamental unit used in the National and Global Oil and Gas Assessment (NAGA) 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 reservoir rock, geologic structures, source rock, and seal lithologies. The only exceptions are assessment units that border a Federal-State water boundary. In these cases, the Federal-State water boundary forms part of the assessment unit boundary. In addition to the shapefile, for U.S. assessments, allocation tables are provided that enumerate percentages assigned to various land categories. Machine-readable versions of the published input and results tables from the associated U.S. Geological Survey (USGS) Fact Sheet are provided in this data release. Methodologies for 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). Refer to supplemental information for a detailed list of files included in this data release.
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[ "010:12" ] |
| contactPoint |
{ "fn": "Christopher J. Schenk", "@type": "vcard:Contact", "hasEmail": "mailto:schenk@usgs.gov" } |
| description | This data release contains the boundaries of assessment units and input data for the assessment of undiscovered conventional oil and gas resources in the Buda limestone reservoir of Texas. The assessment unit is the fundamental unit used in the National and Global Oil and Gas Assessment (NAGA) 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 reservoir rock, geologic structures, source rock, and seal lithologies. The only exceptions are assessment units that border a Federal-State water boundary. In these cases, the Federal-State water boundary forms part of the assessment unit boundary. In addition to the shapefile, for U.S. assessments, allocation tables are provided that enumerate percentages assigned to various land categories. Machine-readable versions of the published input and results tables from the associated U.S. Geological Survey (USGS) Fact Sheet are provided in this data release. Methodologies for 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). Refer to supplemental information for a detailed list of files included in this data release. |
| distribution |
[ { "@type": "dcat:Distribution", "title": "Digital Data", "format": "XML", "accessURL": "https://doi.org/10.5066/P1SN76VY", "mediaType": "application/http", "description": "Landing page for access to the data" }, { "@type": "dcat:Distribution", "title": "Original Metadata", "format": "XML", "mediaType": "text/xml", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.6a2971e21ba49bbcc7f8ac6e.xml" } ] |
| identifier | http://datainventory.doi.gov/id/dataset/USGS_6a2971e21ba49bbcc7f8ac6e |
| keyword |
[ "Assessment Unit", "Buda Limestone Oil and Gas", "Continuous Assessment Unit", "Conventional Assessment Unit", "East Texas Basin Buda Limestone Oil and Gas", "Energy Resources", "Geology", "NOGA2000", "National Assessment of Oil and Gas", "Natural Gas", "Oil", "Oil Gas", "Resource Assessment", "State of Texas", "USGS:6a2971e21ba49bbcc7f8ac6e", "Unconventional Assessment Unit", "United States of America", "energy resources", "geoscientificInformation", "natural gas resources", "oil resources", "petroleum" ] |
| modified | 2026-06-24T00:00:00Z |
| publisher |
{ "name": "U.S. Geological Survey", "@type": "org:Organization" } |
| spatial | -100.8975, 27.4963, -93.9568, 33.3030 |
| theme |
[ "geospatial" ] |
| title | USGS National and Global Oil and Gas Assessment Project—Buda Limestone of Texas: Assessment Unit Boundaries, Assessment Input Data, and Fact Sheet Data Tables |
