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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Primary Division
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ISI/Scopus peer-reviewed
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Published
Eprint ID
52424
DOI 10.1111/gto.12261

Cite as
Urrutia-Fucugauchi, J. , Pérez-Cruz, L. , Morgan, J. , Gulick, S. , Wittmann, A. , Lofi, J. , Morgan, J. V. , Gulick, S. P. S. , Chenot, E. , Christeson, G. , Claeys, P. , Cockell, C. , Coolen, M. J. , Ferriere, L. , Gebhardt, C. , Goto, K. , Jones, H. , Kring, D. A. , Lofi, J. , Lowery, C. M. , Mellett, C. , Ocampo-Torres, R. , Perez-Cruz, L. , Pickersgill, A. E. , Poelchau, M. , Rae, A. , Rasmussen, C. , Rebolledo-Vieyra, M. , Riller, U. , Sato, H. , Smit, J. , Tikoo, S. M. , Tomioka, N. , Urrutia-Fucugauchi, J. , Whalen, M. , Wittmann, A. , Xiao, L. , Yamaguchi, K. E. , Bralower, T. and Collins, G. S. (2019): Peering inside the peak ring of the Chicxulub Impact Crater-its nature and formation mechanism , Geology Today, 35 (2), pp. 68-72 . doi: 10.1111/gto.12261


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