Chemistry:Pica glass
From HandWiki
Short description: Impact glass found in the Atacama Desert
The Pica glass or Atacama desert glass are a collection of impact glass samples only found along a broad 75.6 kilometer stretch of the Atacama Desert in northern Chile, near the town of Pica. Pica glass is notably light weight containing many folds, twist and flow lines.[1] They can be up to 50 centimeters across.[2]
Theses likely originated when a comet entered Earths atmosphere and exploded over the Atacama desert on the Late Pleistocene epoch somewhere between 12,000-14,000 years ago. This explosion occurred soon after the arrival of people in South America so it was likely witnessed by some early hunter-gatherers in the area.[1][2]
References
- ↑ 1.0 1.1 "Pica Glass (Meteorite Impactite) For Sale - FossilEra.com" (in en). https://www.fossilera.com/meteorites-for-sale/pica-impact-glass?srsltid=AfmBOoqgZJpIAZ2iyGZGP-OkoAXYZ6MuIOQvEK4q716uw0zlPH8nRyiP.
- ↑ 2.0 2.1 Schultz, Peter H.; Harris, R. Scott; Perroud, Sebastián; Blanco, Nicolas; Tomlinson, Andrew J. (2021-11-02). "Widespread glasses generated by cometary fireballs during the late Pleistocene in the Atacama Desert, Chile". Geology 50 (2): 205–209. doi:10.1130/G49426.1. ISSN 0091-7613. https://doi.org/10.1130/G49426.1.
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