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The Pre-Jurassic Surface Of Montana., G. Fay
The Pre-Jurassic Surface Of Montana., G. Fay
Bachelors Theses and Reports, 1928 - 1970
It has long been known that, prior to the deposition of Jurassic sediments, Montana was subjected to an intensive period of erosion. Mention of this may be found in numerous reports, especially those dealing with western Montana.