Granite is the signature rock of the continents. More than that, granite is the signature rock of the planet Earth itself. The other rocky planets—Mercury, Venus and Mars—are covered with basalt, as is the ocean floor on Earth. But only Earth has this beautiful and interesting rock type in abundance. Granite Basics Three things [...]
Classification of granites according their magmatic origin results in the formation of two contrasting groups, S-types and I-types. S-types result from the partial melting of meta sedimentary source rocks, a process called anatexis or ultrametamorphism. I-types are derived from source rocks of igneous composition that have not gone through the surface weathering process, or from [...]
R$ 6,30 m2
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