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Large Meteorite Impacts and Planetary Evolution IV

GSA Special Papers

Large Meteorite Impacts and Planetary Evolution IV

Author(s)

Geological Society of America

Volume

465

DOI:

https://doi.org/10.1130/SPE465

Copyright:

© 2010 Geological Society of America

Attribution: You must attribute the work in the manner specified by the author or licensor (but no in any way that suggests that they endorse you or your use of the work). Noncommercial - you may not use this work for commercial purpose. No Derivative works - You may not alter, transform, or build upon this work. Sharing - Individual scientists are hereby granted permission, without fees or further requests to GSA, to use a single figure, a single table, and/or a brief paragraph of text in other subsequent works and to make unlimited photocopies of items in this journal for noncommercial use in classrooms to further education and science.

ISBN print:

9780813724652

Publication date:

September 01, 2010

Book Chapter

Seismic images of Chicxulub impact melt sheet and comparison with the Sudbury structure

Author(s)

P.J. Barton

Bullard Laboratories, University of Cambridge, Madingley Road, Cambridge CB3 OEZ, UK

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R.A.F. Grieve

Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario, K1A 0Y3, Canada

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J.V. Morgan

Department of Earth Science and Engineering, South Kensington Campus, Imperial College, London, London SW7 2AZ, UK

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A.T. Surendra

Bullard Laboratories, University of Cambridge, Madingley Road, Cambridge CB3 OEZ, UK

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P.M. Vermeesch

Department of Earth Science and Engineering, South Kensington Campus, Imperial College, London, London SW7 2AZ, UK

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G.L. Christeson

G.L. Christeson

Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin, J.J. Pickle Research Campus, Austin, Texas 78758, USA

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S.P.S. Gulick

Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin, J.J. Pickle Research Campus, Austin, Texas 78758, USA

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M.R. Warner

Department of Earth Science and Engineering, South Kensington Campus, Imperial College, London, London SW7 2AZ, UK

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Doi:

https://doi.org/10.1130/2010.2465(07)

Published:

September 01, 2010

Chicxulub is the only known impact structure on Earth with a fully preserved peak ring, and it forms an important natural laboratory for the study of large impact structures and understanding of large-scale cratering on Earth and other planets. Seismic data collected in 1996 and 2005 reveal detailed images of the uppermost crater in the central basin at Chicxulub. Seismic reflection profiles show a reflective layer ~1 km beneath the apparent crater floor, topped by upwardly concave reflectors interpreted as saucer-shaped sills. The upper part of this reflective layer is coincident with a thin high-velocity layer identified by analyzing refractions...

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