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The Williston Basin is a large intracratonic sedimentary basin in eastern Montana, western North Dakota, South Dakota, southern Saskatchewan, and south-western Manitoba that is known for its rich deposits of petroleum and potash. The basin is a geologic structural basin but not a topographic depression; it is transected by the Missouri River ...
In the Williston Basin, water was shallow enough for oolite shoals to develop; they later became reservoirs for oil. [6] The gray cliffs along the Missouri River in the Gates of the Mountains, Montana are formed by Madison Limestone. [7]
The Big Snowy Group is a stratigraphical unit of Chesterian age in the Williston Basin. It takes the name from Big Snowy Mountains in Montana , and was first described on the north slopes of the mountain by H.W. Smith in 1935.
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But some companies are making good money off the oil in the Williston Basin, and it's not too late for investors to get. In a previous article, we talked about the U.S. oil boom and why it's not ...
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The Stony Mountain Formation occurs throughout the Williston Basin. [1] It reaches a maximum thickness of 45 metres (150 ft) in the sub-surface at the Canada/United States border, and thins out towards the east, north and west. In Manitoba, where it is exposed at the surface in the erosion belt, it has a thickness of 30 metres (100 ft).
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