Ravenscrag Formation, Geological formation in Saskatchewan, Canada
Ravenscrag Formation is a layered rock unit in Saskatchewan composed of clay, silt, sand, and coal deposits stacked on top of one another. These materials were laid down when shallow seas and river deltas covered this region long ago.
The formation was first documented in 1918 by geologist N.B. Davis at Ravenscrag Butte near the Frenchman River. This early discovery made the area a key location for studying North America's geological past.
The formation provides researchers and students with essential data about plant and animal life during the early Paleocene period through its diverse fossil collection.
The formation is visible in the Cypress Hills area and can be explored from there, especially in southwestern Saskatchewan and southeastern Alberta. Visiting is easiest during warmer months when trails and access routes are more passable.
The base of this rock unit marks the boundary between two major geological periods and contains unusual chemical traces from that time. This spot allows researchers to see exactly when a major extinction event occurred.
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