What is Shatter cone?
[[Image:Strahlenkalk.jpg|thumb|right|Shatter cone from the [[Steinheim crater|Steinheim Basin]] (type locality), Germany.]] [[File:Slate Islands Shattercone.JPG|thumb|right|Largest shatter cone registered, more than 9m in height, [[Slate Islands (Ontario)|Slate Islands]], Terrace Bay, Ontario, Canada]] [[Image:Shattercone_Wengenhausen.JPG|thumb|right|Typical shatter cone from [[Riesa-Großenhain|Ries]] impact crater, Germany.]] '''Shatter cones''' are features of rocks. They only form in the [[bedrock]] beneath [[meteorite]] [[impact crater]]s or underground [[nuclear explosion]]s. They show the rock has been subjected to a shock with pressures in the range of {{convert|2-30|GPa|psi|abbr=on|lk=on}}.<ref name=French1998>{{cite book | author = French B.M. | date = 1998 | title = Traces of catastrophe | publisher = Lunar and Planetary Institute | url = http://www.lpi.usra.edu/publications/books/CB-954/CB-954.intro.html | access-date = 2007-05-20 }}</ref><ref name=Sagy2004>{{cite journal |author = Sagy A. |author2 = Fineberg J. |author3 = Reches Z. |date = 2004 |title = Shatter cones: Branched, rapid fractures formed by shock impact |journal = Journal of Geophysical Research |volume = 109 |issue = B10 |pages = B10209 |doi = 10.1029/2004JB003016 |bibcode = 2004JGRB..10910209S |doi-access= free }}</ref><ref name=IFSG2005>{{Cite journal |last = French |first = Bevan M. |title = Stalking the wily shatter cone: a critical guide for impact-crater hunters |journal = Impacts in the Field |publisher = Impact Field Studies Group |volume = 2 |issue = Winter |pages = s 3–10 |date = 2005 |url = http://web.eps.utk.edu/~faculty/ifsg_files/newsletter/Winter_2005.pdf |url-status = dead |archive-url = https://web.archive.org/web/20110720104913/http://web.eps.utk.edu/~faculty/ifsg_files/newsletter/Winter_2005.pdf |archive-date = 2011-07-20 }}</ref> == References == {{reflist}} [[Categor