Is A Granite Or Any Metamorphic Rock Asteroid Possible

It consists of coarse grains of quartz 10 50 potassium feldspar and sodium feldspar.

Is a granite or any metamorphic rock asteroid possible.

Granite is a light colored plutonic rock found throughout the continental crust most commonly in mountainous areas. Metamorphic rocks started out as some other type of rock but have been substantially changed from their original igneous sedimentary or earlier metamorphic form. This metamorphic rock forms in two different ways. As a result rocks are changed into metamorphic rock across a region that may be many miles wide.

This las vegas boulder is a. The rest of the lesson shows some examples of logs of basement rocks that occur in kansas. Some of these rocks are usually found inside other rocks or ores. Most metamorphic rocks form during regional metamorphism where whole sectors of the crust are pressurized and heated forcing large volumes of rock to recrystallize into new minerals that are stable under the new conditions.

The metamorphic rock that granite forms is gneiss. In migmatite you can see metamorphic rock that has reached the limits of metamorphism and begun transitioning into the igneous stage of the rock cycle. At some point the rock experienced extreme heat and pressure and was a liquid. Minerals form in rocks by coming out of solution.

A quartzite in which all traces of the original grains and sedimentary structures are erased may also be called metaquartzite. Siliceous metamorphic rocks generally have a lower bulk density than micaceous metamorphic rocks. These minerals make up more than 80 of the rock. Other common minerals include mica muscovite and biotite and hornblende see amphibole.

Types of metamorphic rocks. The granitic rock in migmatite probably originated from partial melting of some of the metamorphic rock though in some migmatites the granite may have intruded the rock from deeper in the crust. The great range in igneous and metamorphic rock composition means that individual formations should be considered on a case by case basis. As it slowly cooled and pressure released the molecules of compounds in the liquid bond together in a crystal lattic.

Any kind of protolith can undergo the two types of metamorphism to any degree resulting in the huge amount of variation possible amongst the metamorphic rocks that may be formed. The degree to which a protolith has been exposed to increased temperature and pressure conditions is referred to as metamorphic grade. Endgroup eevee dec 7 18 at 14 07.