Question

1. during the permian period, sedimentary bedrock in the appalachian region was subjected to high temperature and pressure. calcite deposits that had existed in this environment would most likely have formed

a) gneiss
b) marble
c) gabbro
d) schist

Explanation:

Step1: Recall metamorphic rock formation

Metamorphic rocks form from pre - existing rocks under high temperature and pressure. Calcite is the main mineral in limestone.

Step2: Identify the metamorphic rock from limestone

When limestone (which has calcite) undergoes metamorphism (high temperature and pressure), it forms marble. Gneiss usually forms from granite or shale under high - grade metamorphism. Gabbro is an igneous rock. Schist forms from mudstones or shales under medium - grade metamorphism.

Answer:

B. marble