Mudstone (siltstone, claystone or shale) is the protolith for which FOUR of the following?Group of answer choicesgnesshornfelsmarblephyllitequartziteschistserpentiniteslatetalc

The protolith, or parent rock, for the following four metamorphic rocks is mudstone (which includes siltstone, claystone, or shale):

1. Hornfels: This is a fine-grained nonfoliated rock that forms through the metamorphism of shale.

2. Phyllite: This is a type of foliated metamorphic rock created from slate that is further metamorphosed so that very fine grained white mica achieves a preferred orientation. It is primarily composed of quartz, sericite mica, and chlorite.

3. Schist: This is a medium-grade metamorphic rock with medium to large, flat, sheet-like grains in a preferred orientation. It is formed by dynamic metamorphism at high temperatures and high pressures that aligns the grains of mica, hornblende, and other flat or elongated minerals.

4. Slate: This is a fine-grained, foliated metamorphic rock that is created by the alteration of shale or mudstone by low-grade regional metamorphism. It is popular for a wide variety of uses such as roofing, flooring, and flagging because of its durability and attractive appearance.