[ISO_Topic_Category='CLIMATOLOGY/METEOROLOGY/ATMOSPHERE']
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Boundaries and Tags for Major Geologic Units in the United States Entry ID: UTC_majorgeologicunits |
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Summary
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Abstract:
This data set contains boundaries and tags for major geologic units in the conterminous United States. In addition to the polygons representing the areal extent of geologic units, it identifies boundaries of metamorphic provinces, major faults, calderas, impact structures, and the limits of continental glaciation. The data depict the geology of the bedrock that lies at or near the land surface, but not the distribution of surficial materials such as soils, alluvium, and glacial deposits. The data are generalized from a compilation prepared for use in the Geologic Map of North America, to be published in hard copy by the Geological Society of America and released as a digital file by the U.S. Geological Survey. These data have been prepared with a degree of detail appropriate for viewing at a scale of 1:7,500,000. Because of the degree of generalization required (generalization based on compilation scale), the data are intended primarily for display and for regional and national analysis, rather than for more detailed analysis in specific areas. No responsibility is assumed by the U.S. Geological Survey in the use of these data. |
Related URL
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Link:
GET DATA
Description: Location from which the map may be downloaded in PDF or archives of ArcInfo files. |
Geographic Coverage
| N: 44.773125 | S: 30.833223 | E: -72.71876 | W: -122.21224 |
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Data Set Citation
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Dataset Originator/Creator:
John C. Reed, Jr.,Charles A. Bush
Dataset Title: Boundaries and Tags for Major Geologic Units in the United States Dataset Release Date: 2001 Dataset Release Place: Denver, Colorado Dataset Publisher: U.S. Geological Survey Data Presentation Form: map Online Resource: http://pubs.usgs.gov/atlas/geologic/ |
Temporal Coverage
| Start Date: 1998-03-01 |
| Stop Date: 1999-06-01 |
Location Keywords
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CONTINENT
> NORTH AMERICA
> UNITED STATES OF AMERICA
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Science Keywords
| PALEOCLIMATE >ICE CORE RECORDS >VOLCANIC DEPOSITS [Definition] |
| SOLID EARTH >ROCKS/MINERALS/CRYSTALS >BEDROCK LITHOLOGY [Definition] |
| SOLID EARTH >ROCKS/MINERALS/CRYSTALS >IGNEOUS ROCKS [Definition] |
| SOLID EARTH >ROCKS/MINERALS/CRYSTALS >METAMORPHIC ROCKS [Definition] |
| SOLID EARTH >ROCKS/MINERALS/CRYSTALS >SEDIMENTARY ROCKS [Definition] |
| SOLID EARTH >TECTONICS >PLATE TECTONICS >FAULT MOVEMENT [Definition] |
| SOLID EARTH >TECTONICS >VOLCANIC ACTIVITY [Definition] |
ISO Topic Category
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CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
GEOSCIENTIFIC INFORMATION |
Quality
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The line attributes were manually checked by assigning unique line types to the values and then plotting the data. The plots were then compared to the source. The polygon attributes were checked by visually comparing the final colored plots to maps at various larger scales. Polygon and node topology are present. All polygons are labeled and were tested by using the Arc/INFO command LABELERRORS. All polygons were checked for closure, node errors, overshoots, undershoots, dangles and intersections using Arc/INFO routines. The Arc/INFO commands BUILD and CLEAN were run to ensure the topological consistency of the data set. This data set contains map unit boundaries and codes for the 48 conterminous States. Boundaries and codes are included for geologic units, metamorphic facies, limits of glacial advance, impact structures, caldera boundaries, and major faults. |
Access Constraints
| None |
Use Constraints
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None. Acknowledgment of the National Atlas of the United States of America and (or) the U.S. Geological Survey would be appreciated in products derived from these data. |
Keywords
| bedrock |
| faults |
| geologic history |
| geologic map |
| geology |
| glacial limits |
| impact structures |
| metamorphic rocks |
| plutonic rocks |
| regional geology |
| sedimentary rocks |
| tectonic history |
| tectonics |
| volcanics |
Data Set Progress
| COMPLETE |
Data Center
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Central Region, Publications, Geology Division, U.S. Geological Survey, U.S. Department of the Interior
[Information]
Data Center URL: http://cpg.cr.usgs.gov/pub/publications.html
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Distribution
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Distribution_Media:
Online
Fees: No fees |
Personnel
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TYLER
B.
STEVENS Role: DIF AUTHOR Phone: (301) 614-6898 Fax: 301-614-5268 Email: Tyler.B.Stevens at nasa.gov Contact Address: NASA Goddard Space Flight Center Global Change Master Directory City: Greenbelt Province or State: MD Postal Code: 20771 Country: USA |
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JOHN
C.
REED Role: TECHNICAL CONTACT Phone: 303-236-1276 Fax: 303-236-0214 Email: reed at usgs.gov Contact Address: Mail Stop 913 Box 25046 City: Lakewood Province or State: Colorado Postal Code: 80225 Country: USA |
Creation and Review Dates
DIF Creation Date:
2003-03-26
Last DIF Revision Date:
2012-12-21
Future DIF Review Date:
2004-03-26
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