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GREYUIT [131]
3 years ago
6

How do pumice and basalt form?

Chemistry
2 answers:
ozzi3 years ago
6 0

Answer:

"If magma with the same composition reaches the surface, it forms extrusive rocks such as rhyolite and pumice. Basalt is an extrusive igneous rock that forms the ocean floor. ... Also, water and wind break apart and carry away surface rocks. Then deeper rocks are uncovered at the surface."

Explanation:

FinnZ [79.3K]3 years ago
3 0

Answer:

Basalt forms when lava cools quickly at the surface. This quick cooling rate results in very small mineral grains. Pumice is formed when volcanoes erupt explosively. It comes from the same kind of magma which would form granite or rhyolite, that is, a magma that contains lots of silica (quartz). Magma with lots of silica is usually thick and sticky

Explanation:

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