切薩皮克灣隕石坑

切薩皮克灣隕石坑()是因隕石撞擊所形成的地質構造,位在北美洲,直徑約40公里,平均深度1.3公里,外圍環繞的同心圓狀的斷層,使整個坑體的規模達到直徑83公里。據推測,撞擊事件發生於始新世晚期,距今約3千五百五十萬年前。切薩皮克灣隕石坑是美國本土已知規模最大的撞擊構造,同時也是全世界少數幾個形狀完好、適合作為地質研究對象的水底隕石坑。隕石坑形成後,堆積作用持續將沉積物堆積在坑體上,形成了今日的切薩皮克灣。

參見
*銀坑隕石坑

文獻
Poag, C. Wiley. Chesapeake Invader: Discovering America's Giant Meteorite Crater.* Princeton, NJ: Princeton University Press, 1999. ISBN 0-691-00919-8

外部連結
*[https://web.archive.org/web/20080509105348/http://www.wm.edu/geology/virginia/provinces/coastalplain/cbis.html A brief introduction to the Chesapeake Bay Impact Crater.]
*[https://web.archive.org/web/20031206150536/http://geology.er.usgs.gov/eespteam/crater/ USGS, 'Investigating the Chesapeake Bay Impact Crater.']
*[https://web.archive.org/web/20031221194030/http://www.usgs.gov/features/bolide.html USGS, 'The Chesapeake meteorite: message from the past.']
*[http://woodshole.er.usgs.gov/epubs/bolide/ 'The Chesapeake Bay bolide: modern consequences of an ancient cataclysm.']
*[http://www.unb.ca/passc/ImpactDatabase/essay.html Earth Impact Database,] a website concerned with over 160 identified impact craters on the Earth.
*[http://maps.google.com/maps?ll=37.282104,-76.052856&spn=3.092651,3.614502&z=9&t=k&hl=en Satellite image of the region] (from Google Maps)
*[https://web.archive.org/web/20081208160336/http://www.icdp-online.de/contenido/icdp/front_content.php?idcat=713 Chesapeake Bay Impact Structure Deep Drilling Project]
*[http://www.impacttectonics.org/Chesapeake.html 'North American Plate, mid-Atlantic Inversion a result of the Chesapeake Invader?'] www.impacttectonics.org

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