QUESTION 3 One type of interaction between two continental plates produces mount

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QUESTION 3 One type of interaction between two continental plates produces mountain building without collision. This process mimics that of island arc formation EXCEPT accretionary wedges form with island arcs o thrust faults form with continent mountains o forearc basins found only with island arcs o rock composition is different QUESTION 4 What is it about the composition and structure of the rocks in a fold-and-thrust belt that could tell us the geologic history of the area? They should have originated as alluvium sediments deposited in a normally-faulted basin. There should be large sills and dikes of limestone that have cross-cut granite and andesite. We should find rocks composed of sediments eroded from a nearby mountain that were deposited in a marine environment, overlain by rocks of shallow marine and terrestrial sediments. The rocks would likely be uniform from top to bottom.

Explanation / Answer

Question 3. Thrust faults form with continent mountains

Reverse faults also called thrust faults found commonly in collision zones , where tectonic plates push up mountain ranges such as Himalayas and the Rocky mountains.

Question 4: TOo tell geologic history of fold and thrust belt area , we should find rocks composed of sediments eroded from a near by mountain that were deposited in a marine environment overlain by rocks of shallow marine and terrestrial sediments.

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