Sample ID: A-29a-89
Georef Number: 2005-062998
Reference Title: super 40 Ar/ super 39 Ar and K-Ar geochronology and tectonicsignificance of the Upper Cretaceous Adel Mountain Volcanics andspatially associated Tertiary igneous rocks, northwestern Montana
Reference Author: Harlan, Stephen S; Snee, Lawrence W; Reynolds, Mitchell W; Mehnert,Harald H; Schmidt, R G; Sheriff, Steve D; Irving, Anthony J
Location
Sample Detail
Major Data? NO
Trace Data? NO
Isotope Data? NO
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Age: 74.74
Min Age: 74.32
Max Age: 75.16
Geological Age:
Age Method:
REG-COR
Material: IGNEOUS
Type: VOLCANIC
Composition: INTERMEDIATE
Rock Name: TRACHYANDESITE
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