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The AAPG/Datapages Combined Publications Database

AAPG Bulletin

Abstract


Volume: 15 (1931)

Issue: 10. (October)

First Page: 1157

Last Page: 1160

Title: An Ellis (Upper Jurassic) Section at East Butte, Sweetgrass Hills, Montana

Author(s): James O. G. Sanderson (2)

Abstract:

The nearest exposure to the plains of southern Alberta of the marine Jurassic Ellis formation is in the Sweetgrass Hills, a few miles south of the Alberta-Montana boundary. Here it is a dark shale series containing medium-grained sandstone beds, a limestone zone, some notably fossiliferous strata, and oil showings near the base. The formation is 306 feet thick at this locality.

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