National geochronological and natural radioelement data bases
Data Series
14
By: Robert E. Zartman, Charles A. Bush, and C. C. Abston
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Abstract
This CD-ROM contains both the National Geochronological Data Base [NGDB] and the Natural Radioelement Data Base [NRDB]. Supporting location, geologic, and reference information is provided for both data bases. The NGDB is a compilation of more than 30,000 individual published Pb-alpha, fission-track, K-Ar, Rb-Sr, U-Th-Pb, and Sm-Nd rock and mineral ages reported on approximately 18,000 dated samples from the United States. A program is provided to search the data files by latitude and longitude, state, analytical method, and age range. The NGDB is provided as quote-comma delimited files that can be entered into most commercial spreadsheet programs. The NRDB gives gamma-ray spectrometric analyses of the natural radioelements (U, Th, and K) for more than 8500 whole-rock samples obtained under the USGS Natural Radioelement Distribution Project. A program is provided to search the data files by state, keyword, U content, Th content, and K content.
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | National geochronological and natural radioelement data bases |
| Series title | Data Series |
| Series number | 14 |
| DOI | 10.3133/ds14 |
| Edition | - |
| Year Published | 1995 |
| Language | ENGLISH |
| Publisher | The Survey ; For sale by USGS Distribution Branch], |
| Description | 1 computer laser optical disc :col. ;4 3/4 in. |
| Google Analytic Metrics | Metrics page |