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Geography, 28.09.2019 05:30 claudiam1106
Lab 2 5. intrusive rocks crystallize below the earth's surface, while extrusive rocks erupt and crystallize at the surface. why do the grain sizes (texture) vary in these two types of igneous rocks? 6. examine a sample of porphyritic igneous rock. how do you explain the existence of two different grain sizes in one rock? 7. if pumice is a rock, then how does it float?
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Lab 2 5. intrusive rocks crystallize below the earth's surface, while extrusive rocks erupt and crys...
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