Geology Chapter 2.8 0.0 / 5 ? Geologymajor intrusionsASOCR Created by: abbbywCreated on: 31-12-17 09:46 Major intrusions plutonic + cool deep below the surface + include batholiths 1 of 8 Plutons large igneous intrusive bodies. If they are greater than 100km2 then they're called batholiths, usually made of several plutons 2 of 8 Batholith a large igneous intrusion which may be an aggregate of plutons 3 of 8 Metamorphic aureole a large area around a batholith where rocks have been metamorphosed 4 of 8 Contact where the igneous rock meets the country rock 5 of 8 Stoping the process that accommodates the magma, as it moves upwards into the country rock, by the mechanical fracturing of the surrounding country rock 6 of 8 Xenoliths clasts / blocks of pre-existing rock contained within an igneous rock 7 of 8 Assimilation the melting process that incorporates blocks of country rock, freed by stoping, into the magma 8 of 8
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