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Rock Walls in Far NW Arkansas

Posted 05-16-2016 at 10:29 PM by Hedlock

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Quote:

Originally Posted by cindycat

Can someone tell us, in simple English, about the structure of the rock walls along Highway 71 in NW Arkansas and SW Missouri? I did a little research and found this: The entire Lower and Middle Mississippian succession is thicker, and an accumulation of amorphous slump blocks along Highway 71 near Jane, Missouri, record somewhat deeper-water deposition during the Kinderhookian. That's why i asked for simple English. Thanks.

Yes, it's limestone. They are throwing in some geological terminology in the description. The Lower and Middle Mississippian term is a period of time about 350 million years ago when this portion of the earth was covered in water as an ocean. They mention deeper water deposition, meaning that most of the materials were deposited in deeper water (calcium rich materials like sea shells) that created this rock. The Kinderhookian is just another subset of time within the Mississipian. Hope this helps.

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Hedlock

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