The TAS Classification names these objects, which often form through the Tholeiitic or calc-alkaline series. Vine, Matthews, and Morley found patterns in one type of these, whose namesake "large provinces" are found in places including the Siberian Traps and Deccan Traps. Including rocks such as andesite and peridotite, this type of rock makes up batholiths and laccoliths, and can be classified based on metal and silicon content as felsic or mafic. Based on crystal size they are phaneritic or ap
The TAS Classification names these objects, which often form through the Tholeiitic or calc-alkaline series. Vine, Matthews, and Morley found patterns in one type of these, whose namesake "large provinces" are found in places including the Siberian Traps and Deccan Traps. Including rocks such as andesite and peridotite, this type of rock makes up batholiths and laccoliths, and can be classified based on metal and silicon content as felsic or mafic. Based on crystal size they are phaneritic or aphanitic and based on formation they are intrusive or extrusive. For 10 points, name this type of rock, examples of which include granite and basalt, formed from cooled magma.
The TAS Classification names these objects, which often form through the Tholeiitic or calc-alkaline series.