In some areas around Chasm Lake, you can see where Rock Sample #6 intrudes or cu

Question

In some areas around Chasm Lake, you can see where Rock Sample #6 intrudes or cuts into Rock Sample #7,like in this sketch down below Using this information along with you knowledge of the rock cycle and how rocks form, place the following possible events in order to explain what happened to the rocks of Chasm Lake.

1. A unknown rock, older than 1.8 billion years, was part of an ancient continental crust

2. The magma body does not erupt at the surface. Instead stays at depth and the magma slowly crystallizes.

3. Minerals in the older rocks were unstable at the new high temperature and pressure conditions. Neocrystallization occurs creating new mineral over long periods of time.

4. A magma body intrudes the preexisting rock, and through assimilation becomes more felsic.

5. Another unknown geologic event occurs that uplifts rocks sample #6 and rock sample #7 to the surface so that we can see them today.

6. A mountain building event occurred, placed the rocks of Ancient Colorado under tremendous amounts of pressure and in some cases burying them deeper.

Explanation / Answer

The order of events from older to younger are as follows

(Oldest) 1 , 6 , 4, 2, 3, 5 ( youngest)

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