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Germaine McNeil

Batholith  is a sheet intrusion that has been injected between two layers of sedimentary rock
Caldera Large Crater, up to 50km in diameter
Cinder-Cone Volcano Steep-sided, generally small volcanoes
Sill Irregularly shaped,igneous rock masses That covers at least 100km^2
Tephra Pluton that forms when magma intrudes parallel rock layers
Crater a type of sheet intrusion referring to any geologic body that cuts discordantly across
Dike is fragmental material produced by a volcanic eruption regardless of composition, fragment size or emplacement mechanism
Laccolith  is a type of volcano usually built almost entirely of fluid lava flows
Shield Volcano caused by two celestial bodies impacting each other, such as a meteorite hitting a planet

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