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

Urrutia-Fucugauchi, J., Pérez-Cruz, L., Morgan, J., Gulick, S., Wittmann, A., Lofi, J. and IODP‐ICDP Expedition 364 Science Party, (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)

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.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Pickersgill, Dr Annemarie
• Authors: Urrutia-Fucugauchi, J., Pérez-Cruz, L., Morgan, J., Gulick, S., Wittmann, A., Lofi, J., and IODP‐ICDP Expedition 364 Science Party,
• College/School: College of Science and Engineering > School of Geographical and Earth Sciences
• Journal Name: Geology Today
• Publisher: Wiley
• ISSN: 0266-6979
• ISSN (Online): 1365-2451
• Published Online: 26 March 2019
• Copyright Holders: Copyright © 2019 John Wiley and Sons Ltd, The Geologists' Association and The Geological Society of London
• First Published: First published in Geology Today 35(2):68-72
• Publisher Policy: Reproduced in accordance with the publisher copyright policy