GEOL 1001 : Geology Mild Exam Study Guide
Document Summary
A mineral is any naturally occurring, inorganic substance, often additionally characterized by an exact crystal structure (quartz or feldspar). A rock is an indefinite mixture of naturally occurring substances, mainly minerals (granite made of quartz and feldspar). Weathered sediment is compacted to form sedimentary rock. Pressure and heat of the sedimentary rocks then form metamorphic rocks. Melting of the metamorphic rocks causes magma that is then cooled to form igneous rocks. Sedimentary and igneous are found closer to the surface. An extrusive igneous rock cools very fast on the surface and is created by lava. Intrusive igneous rock cools very slowly beneath the surface and is created by magma (plutonic) Physical geology is about the processes that have shaped earth over time and. Historical geology is about how we can reconstruct the record of change on. Mohs hardness scale numbered 1(softest) to hardest(10) can be used to identify the mineral.
