Why does finding stishovite at Earth's surface indicate an asteroid impact occurred in the area?
A. Stishovite contains elements not found on Earth.
B. Stishovite forms as the outer surface of an asteroid cools after an impact.
C. Stishovite grows in soil enriched in iridium.
D. Stishovite forms as quartz is subjected to the high pressure during an impact.
E. The cores of most asteroids contain the otherwise rare stishovite.
Answer: D
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