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What condition results in magma cooling and forming a “glassy” igneous rock?
a.
extremely slow cooling
b.
cooling in the presence of oxygen
c.
extremely rapid cooling
d.
partial melt cooling

Respuesta :

yahoii768
it would be extremely rapid cooling because it would be too fast for mineral grains to grow. basalt is the aphanitic or fine-grained equivalent of gabbro. plutonic rocks are intrusive and generally consist of mineral grains coarse enough to be readily visible in a hand sample.

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Ranferi

Answer:

c.  extremely rapid cooling

Explanation:

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