Which rock is most affected by temperature change and what happens when rock is heated and cooled many times and rate of cooling affect the formation of a rock?
Sedimentary rocks usually weather more easily than igneous rocks. Chemical weathering increases as: Temperature increases. Chemical reactions are faster at higher temperatures. Metamorphic rocks form from heat and pressure changing the original or parent rock into a completely new rock. The parent rock can be either sedimentary, igneous, or even another metamorphic rock. The word "metamorphic" comes from Greek and means "To Change Form". Extrusive or volcanic rocks crystallize from lava at the earth's surface. The texture of an igneous rock is dependent on the rate of cooling of the melt: slow cooling allows large crystals to form, fast cooling yields small crystals.
Dr Naresh,
I was going to answer your question, but you seem to have answered it yourself.
Why is that?
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