How Does Granite Form?


Quick Answer

As of 2014, geologists contend that granite is a plutonic rock resulting from deeply buried shale and sandstone that melted, partially melted or metamorphosed, depending on the category of granite in question. Igneous granite forcefully ripped through the Earth's crust, while metamorphic has no evidence of fluidity.

Continue Reading
How Does Granite Form?
Credit: Sherrie Thai CC-BY-2.0

Full Answer

Rhyolite, formed from granite and magma, only exists in the continental crust, especially in the mountains. It has not been found in any ocean. Eighty percent of granite is composed of large, coarse grains of potassium feldspar, sodium feldspar and quartz. During the late stages of cooling, hydrothermal solutions carried veins of gold, silver, zinc, lead and copper ores throughout the fissures, the fractures and along the periphery of the granite body.

Learn more about Geology
Related Videos

Related Questions