Abstract
The variety of classified magmatic Geounits includes 24 Units and 27 Variants ordered in five Groups and six Subgroups. The Groups are: N - Intrusive magmas are emplacements of magma in pre-existing rocks, (Figs. 1 to 5) X - Extrusive magmas are igneous rocks that have been erupted onto the surface of the Earth (Figs. 6, 7) P- Pyroclastic deposits are fragmental aggregates that are explosively ejected from a volcano, transported through the air and deposited downwind. (Figs. 8, 9) V - Volcanic structures are forms built up by repeated subaerial eruptions of basic (low silica) magmas. (Figs. 10 to 16) A - Epiclastic deposits are the result of surface processes of erosion, transportation and redeposition operating in volcanic terrains.
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© 2011 Springer-Verlag Berlin Heidelberg
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Rivard, L.A. (2011). Section 1 Magmatic Rocks and Structures. In: Satellite Geology and Photogeomorphology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-20608-5_2
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DOI: https://doi.org/10.1007/978-3-642-20608-5_2
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