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Volcanology
M
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Maar
A Maar is a dish-shaped crater from an explosion, from a few ...
Magma
Magma is a Greek word meaning "paste". Hot plastic ...
Magma
Magma is molten rock that can solidify at depth or emerge as lava.
Magma chamber
A magma chamber is a reservoir of magma located under a ...
Mesostase
In volcanic rocks mesostase is vitreous or very finely ...
Metasomatose
Metasomatose is an extreme case of metamorphism accompanying ...
Microdiorite
Microdiorite is plutonic igneous rock with a micro-grained ...