Geography, asked by Gouraansh, 3 days ago

Are all extrusive/volcanic rocks Basic(on the basis of composition)?

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Answered by anythingcreative9234

Answer:

Extrusive rocks are usually distinguished from intrusive rocks on the basis of their texture and mineral composition. ... Many extrusive rocks also contain intrusive components; this mixture of fine- and coarse-grained textures is described as porphyritic.

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