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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 Subtype||State or Local Government Series|
|Title||Radiometric age map of southcentral Alaska|
|Series title||Alaska Division of Geological & Geophysical Surveys Open File Report|
|Series number||DGGS AOF 85|
|Publisher||Alaska Division of Geological & Geophysical Surveys|
|Publisher location||Fairbanks, AK|
|Contributing office(s)||Alaska Science Center|
|Description||Map: 40.33 x 34.50 inches|
|Google Analytic Metrics||Metrics page|