National geochronological and natural radioelement data bases
By: U.S. Department of the Interior, U.S. Geological Survey
Series: U.S. Geological Survey digital data series -- DDS-14
Publisher: The Survey; For sale by USGS Distribution Branch
Published: 1995
Place of publication: Reston, Va.?; Denver, Colo
Language: eng
Format: [computer file] /
Subjects: Geological time; Databases; Radioactive substances
Other titles: National geochronological data base; Natural radioelement data base
Description: The NGDB contains more than 30,000 individual published ages of rocks and minerals in the United States; while the NRDB contains analyses of the natural radioelements from more than 8500 whole rocks.
Notes: Title from container insert.

Shipping list no.: 95-006-E.

System requirements: IBM or compatible personal computer; 640 kb RAM; MS or PC-DOS version 5.0 or later; SVGA graphics card (640x480); SGVA color monitor; Microsoft MSCDEX version 2.1 or later; CD-ROM drive with ISO 9660 software driver; hard disk drive.
Table of contents: title: A. National geochronological data base / by Robert E. Zartman, Charles A. Bush, and Carl Abston; title: B. Natural radioelement data base / by Charles A. Bush and Carl Abston.