杜丁撞擊坑

杜丁撞擊坑
行星火星
坐標23°06′N 207°06′E / 23.1°N 207.1°E / 23.1; 207.1
火星方格列表亚马孙區
直径28公里(17英里)
环形山深度1.2公里(0.75英里)
發現者Pete Mouginis-Mark
命名大倫敦杜丁

杜丁撞擊坑(英語:Tooting)是一個位於火星亞馬遜平原亞馬遜區)的一個壁壘型撞擊坑(Rampart crater),中心座標23.1°N, 207.1°E,位在火山奧林帕斯山西方[1]

概要

杜丁撞擊坑是於2004年9月由行星地質學家 Peter Mouginis-Mark 發現。科學家推測它的年齡數十萬年,是相對年輕的撞擊坑[2]。之後的研究也確認了這個數量級[3]。2007年有一篇研究杜丁撞擊坑地質和地貌的論文發表於期刊 "Meteoritics and Planetary Science", vol. 42, pages 1615 - 1625。

命名

杜丁撞擊坑是以大倫敦杜丁區命名。國際天文聯會規定直徑小於60公里的火星撞擊坑必須以地球上人口少於10萬的城鎮命名[4]。發現者以他的故鄉命名[5]。這個消息引起許多英國知名媒體大篇幅報導[6][7][8]

杜丁撞擊坑

地質

杜丁撞擊坑有許多地貌特徵暗示它是相當年輕的撞擊坑。這些特徵包含了一群次級撞擊坑、附近缺乏其他撞擊坑、撞擊熔融和撞擊坑的中央丘未被沉積物覆蓋。

因為杜丁撞擊坑周圍是平坦的熔岩流(低於火星大地水準面3872公尺),因此可以推測撞擊坑和周圍噴發物堆積層的形成。例如來自撞擊坑形成時的噴發物體積推測是450立方公里,並且過程少於半小時[2][9]

杜丁撞擊坑是非對稱的,因為形成它的隕石是以自東北向傾斜角度撞擊的[2]

參考資料

  1. ^ Gazetteer of Planetary Nomenclature. [2007-05-18]. (原始内容存档于2006-09-30). 
  2. ^ 2.0 2.1 2.2 Tooting Crater's Tangled Tale. [2007-05-18]. (原始内容存档于2009-09-29). 
  3. ^ Cratering age considerations for young terranes in the inner Solar System (PDF). [2007-05-18]. (原始内容存档 (PDF)于2016-06-17). 
  4. ^ Categories for Naming Features on Planets and Satellites. [2007-05-18]. (原始内容存档于2011-08-25). 
  5. ^ Mars crater named after Tooting. BBC News. 2005-11-01 [2007-05-18]. (原始内容存档于2021-03-09). 
  6. ^ Brown, Andrew. Why Tooting is on another planet. London: The Guardian. 2005-11-02 [2007-05-18]. 
  7. ^ Abrams, Corinne. Tooting makes it to Mars. The Sun (London). [2007-05-18]. 
  8. ^ Life on Mars - But the force is with Tooting. London: The Times. 2005-11-01 [2007-05-18]. (原始内容存档于2011-05-23). 
  9. ^ Ejecta Thickness of the Martian Impact Crater Tooting. American Geophysical Union, Fall Meeting 2006. Bibcode:2006AGUFM.P34B..01M. 

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