Sandstone, limestone, and shale are the parent rocks, and quartzite, marble, and slate are the metamorphic rocks that resulted from them.
What are metamorphic rock?
- Metamorphic rocks get their name from the word metamorphism, which means "to change." These rocks are so named because they change forms due to a variety of external factors.
- Parent rocks are the original rocks from which metamorphic rocks form after being altered.
- Granitic intrusions in large quantities are also associated with regional metamorphic rocks. Slates, schists, and gneisses are the most common regional metamorphic rocks.
- Metamorphic rocks were once igneous or sedimentary rocks that were altered (metamorphosed) by intense heat and/or pressure within the Earth's crust. They have a crystalline texture and are frequently "squashed" (foliated or banded).
- Sandstone, limestone, and shale are all sedimentary rocks that undergo metamorphism as a result of high heat, pressure, temperature, and chemical activity.
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