California Granitic Rock

It forms from the slow crystallization of magma below earth s surface.

California granitic rock.

Concrete building materials contracting construction services. Granite ˈ ɡ r æ n ɪ t is a common type of felsic intrusive igneous rock that is granular and phaneritic in texture. Granite is thought to form as hot fluids from deeper in the mantle rise and trigger widespread melting in the continental crust. Porter wilson was born in san francisco in 1866 graduated from mit with the class of 1890 and returned to california where he partnered with kimball g.

Granite rock company was founded on february 14 1900 by arthur roberts a r wilson and warren r. Based in watsonville calif the firm works with contractors and supplies them aggregate ready mix concrete hot mix asphalt emulsions road oils stucco plaster granite countertops and sealers to name a few. Granitic rocks of the yosemite valley area california by frank c. Aromas research technical services.

This is also called a plutonic rock. Granite is composed mainly of quartz and feldspar with minor amounts of mica amphiboles and other minerals this mineral composition usually gives granite a red pink gray or white color with dark mineral. Granites can be predominantly white pink or gray in color depending on their mineralogy the word granite comes from the latin granum a grain in reference to the coarse grained structure of such a completely crystalline rock. Peck in geologic guide to the merced canyon and yosemite valley california california division of mines and geology bulletin 182.

Calkins and dallas l. Granite is a light colored igneous rock with grains large enough to be visible with the unaided eye.