To aid in their study of the earth geologists group rocks into three categories based on their origin.
Igneous metamorph gjeiss sandstone sediment granite.
Igneous sedimentary and metamorphic.
These rocks primarily consist of quartz feldspar and mica.
Composed of quartz feldspar and mica.
Gneiss is a foliated metamorphic rock that is a common distribute type of rock high grade regional metamorphic approaches from pre current formations that have been initially both igneous or sedimentary rocks.
Its composition is equal to that of granite but forms alternating layers of clear and dark minerals.
Each category is then further subdivided.
This article attempts to highlight their differences.
The mineral constituents that create these rocks get recycled over time.
Igneous sedimentary metamorphic rocks.
All rocks undergo a series of processes called the rock cycle where one type of rock changes into another.
What is this roof made of.
It has a glorious banding which is apparent on microscopic scale and hand specimen.
Granite is an igneous rock while gneiss is a rock that may have been igneous or sedimentary earlier but has undergone metamorphic process.
There are similarities between the two types of rocks confusing many people.
Gneiss is a metamorphic rock granite is an igneous rock and sandstone is a sedimentary rock.
Examples of metamorphic rocks.