Joint IODP/ICDP Scientific Drilling of the Chicxulub Impact Crater
| Autor: | Penny Barton, Jaime Urrutia, Sean Gulick, Richard Grieve, Gail Christeson, Joanna Morgan, Jay Melosh, Mario Rebolledo |
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| Jazyk: | angličtina |
| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | Scientific Drilling, Iss 4, Pp 42-44 (2007) |
| Druh dokumentu: | article |
| ISSN: | 1816-8957 1816-3459 |
| DOI: | 10.2204/iodp.sd.4.11.2007 |
| Popis: | The Chicxulub impact crater in Mexico (Fig. 1) is unique in the terrestrial impact record. Its association with the Cretaceous–Paleocene (K-P) mass extinction has generated great interest, but the precise environmental effects and associated extinction mechanisms remain a matter of some debate over several decades. Chicxulub is also the best preserved large impact crater on Earth and is the only known terrestrial impact structure with a demonstrable topographicpeak ring (Figs. 2 and 3). Peak rings are common features of large craters on the terrestrial planets yet their process of formation is poorly understood. At all other large terrestrial craters, erosion and/or tectonic deformation have removed the evidence of a peak ring, should one have existed. Chicxulub is, thus, the only crater where the peak ring can be imaged and sampled. |
| Databáze: | Directory of Open Access Journals |
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