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Re: [dinosaur] Clastic origin of the Hell Creek Formation



Broadly from the West: erosion of the Sevier uplift (and the then on-going Laramide) uplift of the American Cordillera.

That said, that doesn't mean that some the river systems involved might not have moved in other directions.

On Thu, Aug 6, 2020 at 12:01 AM John Schneiderman <john-schneiderman@cox.net> wrote:

Where did the clastic material that makes up the Hell Creek Formation, in North Dakota, originated from? From the west , north, south or east?


john-schneiderman@cox.net



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