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Under which condition below would you expect a glassy extrusive rock like obsidian to form? A. Within a zone of fractured rocks below Earth's surface B. 25 km beneath Earth…

Under which condition below would you expect a glassy extrusive rock like obsidian to form? A. Within a zone of fractured rocks below Earth's surface B. 25 km beneath Earth…
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Under which condition below would you expect a glassy extrusive rock like obsidian to form?

A. Within a zone of fractured rocks below Earth's surface
B. 25 km beneath Earth's surface
C. Lava slowly flowing out of a fracture in Earth's surface
D. Quick cooling on Earth's surface

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User Jerin A Mathews
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Hihi!

The correct answer would be D. Quick cooling on Earth's surface! Obsidian isa volcanic rock formed by the rapid solidification of lava without crystallization!

I hope I helped!
-Loliarual
answered
User Glori
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