Part D History of the Great Unconformity What sort of history do we have here? B

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Part D History of the Great Unconformity What sort of history do we have here? Below the unconformity we observed rocks that were strongly deformed, metamorphosed, and partially molten; these things all occur deep within the crust Above the unconformity, we see typical sedimentary rocks that reflect a changing landscape at the surface. Using what we've observed and what you know about different rocks, create a logical sequence of events for the Great Unconformity Rank the following events from oldest to youngest. View Available Hint(s) Reset Help Rock uplift and erosion creates the Rocky Mountains, including the Wind River Canyon exposing a part of the geologic record Somewhere deep eous below, metamorphicsediments accumulate rocks are brought up by erosion and exposed at the surface rocks are formed from another rock type and are then intruded by igneous rocks on exposed basementburied forming sedimentary rock rocks, defining the unconformity Oldest Youngest

Explanation / Answer

Sequence of events

1.Sedimentsaccumulate on exposed basement rocks defining the unconformity.

2. Sediments are buried forming sedimentary rock

3. Somewhere deep below metamorphic rocks are formed from another Rock type and are then intruded by igneous rock.

4. Rocks uplift and erosion creates the Rocky mountains including the wind river Canyon exposing a part of the geologic record.

5. Metamorphic igneous rocks are brought up by erosion and exposed at the surface.

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