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Radiometric age map of southwest Alaska

December 31, 1975

This map includes published, thesis, and open-file radiometric data available to us as of June, 1975. Some dates are not plotted because of inadequate location data in the original references.

The map is divided into five sections, based on 1:1,000,000 scale enlargements of the National Atlas maps of Alaska. Within each section (e.g., southeastern Alaska), radiometric dates are plotted and keyed to 1:250,000 scale quadrangles. Accompanying each map section is table 1, listing map numbers and the sample identification numbers used in DGGS Special Report 10: Radiometric Dates from Alaska-A 1975 Compilation”. The reader is referred to Special Report 10 for more complete information on location, rock type, dating method, and literature references for each age entry. A listing of dates in Special Report lo which require correction or deletion is included S table 2. Corrected and additional entries are listed in table 3. The listings in tables 2 and 3 follow the format of Special Report 10. Table 4 is a glossary of abbreviations used for quadrangle name, rock type, mineral dated, and type of dating method used.

Publication Year 1975
Title Radiometric age map of southwest Alaska
DOI 10.14509/180
Authors Frederic H. Wilson, D. L. Turner
Publication Type Report
Publication Subtype State or Local Government Series
Series Title Alaska Division of Geological & Geophysical Surveys Open File Report
Series Number DGGS AOF 84
Index ID 70187731
Record Source USGS Publications Warehouse
USGS Organization Alaska Science Center