Unformatted text preview: crust: Igneous or magmatic rocks: result from cooling of the magma Sedimentary rocks result from weathering of the rocks (magmatic, metamorphic, sedimentary) Metamorphic rocks result from physico-chemical transformation of old rocks 3.2 Rocks Different types of rocks? (3) The igneous rocks or magmatic : they come from a mass in fusion which was then solidified . The place and the moment when they consolidated confer them various properties what enables us to subdivide them in 2 major classes.: b A) The extrusive igneous rocks b B) The intrusive igneous rocks. 3.2 Rocks...
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- Spring '11