Monday, February 4, 2013

Geology Kitchen #11 - Igneous Rocks



Igneous rocks are rocks derived from the cooling of magma, molten material originating from the upper Mantle/lower crust. Igneous rocks are classified by their texture and their composition. Rocks ' textures range from fine-grained (extrusive/volcanic) or coarse-grained (intrusive/plutonic). Compositions range from silica-rich (felsic) to silica-poor (mafic).

1 comment:

Manohar Singh said...

you have got. And definitely, we are at all times motivated with your mind-boggling guidelines served by you. Some 1 points in this article are essentially the best we have all had.Partywear suit