Peering inside the peak ring of the Chicxulub Impact Crater-its nature and formation mechanism


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Catalina.Gebhardt [ at ] awi.de

Abstract

The IODP-ICDP Expedition 364 drilled into the Chicxulub crater, peering inside its well-preserved peak ring. The borehole penetrated a sequence of post-impact carbonates and a unit of suevites and clast-poor impact melt rock at the top of the peak ring. Beneath this sequence, basement rocks cut by pre-impact and impact dykes, with breccias and melt, were encountered at shallow depths. The basement rocks are fractured, shocked and uplifted, consistent with dynamic collapse, uplift and long-distance transport of weakened material during collapse of the transient cavity and final crater formation.



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Published
Eprint ID
52424
DOI https://www.doi.org/10.1111/gto.12261

Cite as
Urrutia-Fucugauchi, J. , Pérez-Cruz, L. , Morgan, J. , Gulick, S. , Wittmann, A. and Lofi, J. (2019): Peering inside the peak ring of the Chicxulub Impact Crater-its nature and formation mechanism , Geology Today, 35 (2), pp. 68-72 . doi: https://www.doi.org/10.1111/gto.12261


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