Autumn Leaf Granite

Place of Origin:
United States
“The rock forming the earth’s crust falls into three generic groups: igneous, sedimentary and metamorphic. Heat, pressure, and chemical reactions may change either igneous or sedimentary rock into metamorphic rock, meaning ‘changed in form’ usually into more compact and crystalline condition, and even metamorphic rocks may be further altered to higher ranks of metamorphism.
Granites usually have been classes as igneous rocks derived from molten masses or magmas, but there is wide evidence that the origin of some granites may be attributed to regional metamorphism or preexisting rocks, rearrangement and recrystallization taking place without a liquid or molten stage.

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