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shatter cone

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noun Geology.
  1. a small, radially striated rock structure produced by intense shock, such as generated by meteorite impact.
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Origin of shatter cone

First recorded in 1945–50
Also called pressure cone.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

pressure cone in Science

shatter cone

[shătər]
  1. A fractured, conical fragment of rock that has striations radiating outward from the apex. Shatter cones are believed to form when rocks are subjected to shock waves associated with a meteoric impact. They are typically between a few centimeters and a few meters long.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.