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The AAPG/Datapages Combined Publications Database
Montana Geological Society
Abstract
MTGS-AAPG
Montana Geological Society: 1989 Field Conference Guidebook: Montana Centennial Edition: Geologic Resources of Montana: Volume
1
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RECONNAISSANCE PALEONTOLOGIC STUDY OF THE KISHENEHN FORMATION, NORTHWESTERN MONTANA AND SOUTHEASTERN BRITISH COLUMBIA
ABSTRACT
The Kishenehn Formation, a sequence of over 11,000 ft (3,350 m) of synorogenic deposits, has yielded fossils that include microfloral and megafloral remains, mollusks, insects, fishes, and mammals that suggest an age range between late Eocene and early Miocene. Radiometric dates from the deposits in the Kishenehn and South Fork basins are within the Oligocene. The fossils provide evidence for a climatic transition from sub-tropical to warm temperate conditions and development of several new taxa.
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