Question

The bedrock of the adirondack mountains was formed mainly by the

Answer 1

There are choices for this question namely:

a. cementation of clastic sediments and precipitates from seawater 
b. compaction and recrystallization of volcanic material 
c. regional metamorphism of sedimentary and igneous rocks 
d. contact metamorphism of unconsolidated gravel 

The correct answer is that the bedrock of the Adirondock mountains is formed mainly by regional metamorphism of sedimentary and igneous rocks. The geology of the Adirondock mountains formed around 5 million years ago with rocks  over 1000 million years old. At this very ancient age, the sedimentary and igneous rocks in the Adirondock mountains have undergone extensive heat and pressure hence regional metamorphism of the existing sedimentary and igneous rocks.