GLGY 209 Lecture Notes - Lecture 15: Vesicular Texture, Pyroclastic Flow, Magma Chamber
2 May 2019
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Document Summary
Intrusive rocks are homogenous in terms of formation. Heterogeneity in intrusive rocks are apparent in mineralogy and chemical composition. In volcanic rocks, processes are more complex. Once molten matter reaches surface, it can flow on the surface, other times, gases are expelled that carry with them pieces of the volcanic mountain and make a different type of rock. Separation according to presence or absence of incandescent matter in the products of lava flows and pyroclastic slows. These are major disasters when they happen because whenever and wherever there is lava flow, if it passes through a human community, it will obliterate. Humans haven"t developed a method to beat a natural disaster. Still dangerous because there is flow of large size matter. There is no method developed to survive a natural disaster like this. Most frequent rocks in the solar system. First rocks to be sampled on the moon.
