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.

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. Granite is a light colored plutonic rock found throughout the continental crust most commonly in mountainous areas. A quartzite in which all traces of the original grains and sedimentary structures are erased may also be called metaquartzite.

At some point the rock experienced extreme heat and pressure and was a liquid. Some of these rocks are usually found inside other rocks or ores. As it slowly cooled and pressure released the molecules of compounds in the liquid bond together in a crystal lattic. The degree to which a protolith has been exposed to increased temperature and pressure conditions is referred to as metamorphic grade.

Siliceous metamorphic rocks generally have a lower bulk density than micaceous metamorphic rocks. 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. 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 great range in igneous and metamorphic rock composition means that individual formations should be considered on a case by case basis.

Types of metamorphic rocks. The rest of the lesson shows some examples of logs of basement rocks that occur in kansas. Begingroup for starters if you search is granite a metamorphic rock google already tells you that granite is composed of mainly quartz and feldspar with minor amounts of mica amphiboles and other minerals. 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.

Endgroup eevee dec 7 18 at 14 07. In the first way sandstone or chert recrystallizes resulting in a metamorphic rock under the pressures and temperatures of deep burial. This metamorphic rock forms in two different ways. Minerals form in rocks by coming out of solution.

Other common minerals include mica muscovite and biotite and hornblende see amphibole. These minerals make up more than 80 of the rock. Metamorphic rocks started out as some other type of rock but have been substantially changed from their original igneous sedimentary or earlier metamorphic form.