Shale is metamorphosed into which of the following rocks?
a) Graphite
b) Gneiss
c) Marble
d) Slate
Answer. d) Slate
Rock types:
There are three types of rocks namely:
- Igneous rock
- Metamorphic Rocks
- Sedimentary rocks
Igneous rock:
Igneous rock, also called Primary rocks. It formed directly after the cooling of magma. Some of the examples of Igneous rock are granite, gabbro, basalt, tuff, Pegmatite, Breccia, and diorite.
Sedimentary Rocks:
Sedimentary rocks are formed after the breaking of Igneous rocks.
Fossils and layering of fossils are seen in the sedimentary rocks. Natural gas is found in the Sedimentary rocks.
Examples of sedimentary rocks are Shale, sandstone, limestone, and clay.
Metamorphic rocks:
Sedimentary and igneous rocks are subjected to high temperature and pressure, it converted to metamorphic rock.
For example, Shale rock is a sedimentary rock, it gets converted to slate after increasing metamorphism [ intense heat and pressure under the Earth's crust].
The list I (Original rock): List II ( Metamorphic rocks)
Sandstone / Siltstone ( Sedimentary): Quartzite
Limestone ( Sedimentary): Marble
Shale ( Sedimentary): Slate/Phyllite/Schist/Gneiss
Bituminous Coal ( Sedimentary): Anthracite Coal
Granite ( Igneous): Gneiss
Basalt ( Igneous): Schist
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