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The genetic scheme for classifying rocks is based on

The genetic scheme for classifying rocks is based onA.mineral (and therefore elemental) composition.
B.temperature and pressure
C.the average grain size.
D.origin of formation.

Thegenetic schemeforclassifying rocksis based on the origin of formation (D)Classification schemesallow us to better organize information, better retainsignificant factsabout materials or objects, and better noticesimilaritiesandcontrasts between groups of things. At the close of the 18th century, the majority of geologists had come to terms with thegenetic classificationscheme for rocks, which is the same one that is in use today. The beginning, or genesis, of rock formations is the primary emphasis of this concept. According to this method, geologists classify rocks into one of three primary categories: igneous rocks, sedimentary rocks, and metamorphic rocks.Igneous rocksare those that are formed by the solidification of molten rock by the process of freezing.Sedimentary rocksare formed either by the cementing together of fragments (grains) broken off of preexisting rocks or through the precipitation of mineral crystals from under water solutions at or around the surface of the Earth.Metamorphic rocksare formed when pre-existing rocks change character as a result of pressure and temperature changes.To learn more aboutrock classification, click here:brainly.com/question/14929053#SPJ4...

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