Which Is More Weather Resistant Rhyolite Or Granite

Crystallization may sometimes have begun while the magma was deeply buried.

Which is more weather resistant rhyolite or granite.

Rhyolite is similar in composition and appearance to granite but it forms through a. Granite would be more resistant to decomposition as compared to rhyolite because rhyolite is a fine grained rock and granite is a coarse grained rock. It has even started replacing marble because of its more durable qualities and resistance to weather and acid rain. Please don t take this as always true but it is a close enough estimate in most cases.

The rock received its name from german geologist ferdinand von richthofen better known as the red baron a world war i flying ace the word rhyolite comes from the greek word rhýax a stream of lava with the suffix ite given to rocks. Rhyolite is a felsic silica rich volcanic igneous rock composed with the same mineral content as granite only while in the molten rock form unlike granite it cools fast extrusive type near or over the surface of earth s crust when these magmas erupt a rock with two grain sizes typically form. The streak of granite is white while that of rhyolite is colorless. And the definition of granite expands wildly when used by people who sell dimension stone such as countertops tile and building veneer.

Multiple definitions of granite. Though a very common rock granite is far from ordinary. Rhyolite is a silica rich igneous rock found throughout the world. Rhyolite extrusive igneous rock that is the volcanic equivalent of granite most rhyolites are porphyritic indicating that crystallization began prior to extrusion.

The specific heat capacity of granite is 0 79 kj kg k and that of rhyolite is not available. A simple definition is used in introductory courses. A more precise definition is used by petrologists geologists who specialize in the study of rocks. The word granite is used in a variety of ways by different people.

Depending on the properties like hardness toughness specific heat capacity porosity etc rocks are resistant to heat wear impact etc granite is heat resistant wear resistant. The major component of quartz orthoclase muscovite and biotite are the in order of resistant to decomposition. Granite tends to be more stable to weathering conditions. In such cases the rock may consist principally of well developed large single crystals phenocrysts at the time of extrusion.

Therefore granite will weather more slowly than limestone. So i m going to make a general comment and say that a granite is genetically the same has the same composition as a rhyolite. Granite is extremely hard and less affected by the freeze thaw cycle the forces of abrasion and the surface exfoliation processes that are all a part of physical weathering. The chemical composition as well as the formation of granite inside the earth s surface produces an incredible material that is valued for its looks and physical properties.

The larger crystals that form just beneath the surface cool at a slower pace and are. Granite is extremely resistant and sandstone a little less so due to the percentage of quartz that each rock type contains.