Rock Formation by Metamorphism

What are the rocks typically formed by the metamorphism of sandstone and limestone?

a) Quartzite and Slate

b) Marble and Amphibolite

c) Granite and Basalt

d) Gneiss and Schist

Answer:

Quartzite and Marble are typically formed by the metamorphism of sandstone and limestone, respectively.

Quartzite is typically formed by metamorphism of sandstone. When sandstone is subjected to heat, pressure, and natural agencies, the grains of sandstone recrystallize and fuse together, forming quartzite. Quartzite is a hard metamorphic rock mainly composed of quartz.

Marble, on the other hand, is typically formed by the metamorphism of limestone. Under high heat and pressure, the calcite in limestone recrystallizes to form marble, which is a hard, crystalline rock prized for its aesthetic qualities.

Amphibolite and slate are also metamorphic rocks, but they are not typically formed by the metamorphism of sandstone. Amphibolite is formed from the metamorphism of basaltic rocks, while slate is formed from the metamorphism of shale or mudstone.