261
IRUS Total
Downloads
  Altmetric

The formation of peak rings in large impact craters

File Description SizeFormat 
final-submitted.pdfAccepted version1.68 MBAdobe PDFView/Open
Title: The formation of peak rings in large impact craters
Authors: Morgan, JV
Gulick, SPS
Bralower, T
Chenot, E
Christeson, G
Claeys, P
Cockell, C
Collins, GS
Coolen, MJL
Ferrière, L
Gebhardt, C
Goto, K
Jones, H
Kring, DA
Le Ber, E
Lofi, J
Long, X
Lowery, C
Mellett, C
Ocampo-Torres, R
Osinski, GR
Perez-Cruz, L
Pickersgill, A
Poelchau, M
Rae, A
Rasmussen, C
Rebolledo-Vieyra, M
Riller, U
Sato, H
Schmitt, DR
Smit, J
Tikoo, S
Tomioka, N
Urrutia-Fucugauchi, J
Whalen, M
Wittmann, A
Yamaguchi, KE
Zylberman, W
Item Type: Journal Article
Abstract: Large impacts provide a mechanism for resurfacin g planets through mixing near-surface rocks with deeper material. Central peaks are formed from the dynamic uplift of rocks during crater formation. As crater size increases, central peak s transition to peak ri ngs. Without samples, debate surrounds the mechanics of peak-ring formation and their depth of origin. Chicxulub is the only known impact structure on Earth with an unequivocal peak ring, but it is buried and only accessible through drilling. Ex pedition 364 sampled the Chicxulub peak ring, which we found was formed from uplifted, fractured, shocked, felsic basement rocks. The peak-ring rocks are cross-cut by dikes and shear zones and have an unusually low density and seismic velocity. Large impacts therefore generate vertical fluxes and increase porosity in planetary crust.
Issue Date: 18-Nov-2016
Date of Acceptance: 14-Oct-2016
URI: http://hdl.handle.net/10044/1/42572
DOI: 10.1126/science.aah6561
ISSN: 0036-8075
Publisher: American Association for the Advancement of Science (A A A S)
Start Page: 878
End Page: 882
Journal / Book Title: Science
Volume: 354
Issue: 6314
Sponsor/Funder: Science and Technology Facilities Council (STFC)
Natural Environment Research Council (NERC)
BG International Limited
Natural Environment Research Council (NERC)
ConocoPhillips
Particle Physics and Astronomy Research Council (PPARC)
The Leverhulme Trust
Science and Technology Facilities Council (STFC)
Natural Environment Research Council (NERC)
Funder's Grant Number: ST/N000803/1
NER/T/S/2000/00183
4100005341
NE/P005217/1
N/A
PP/D001986/1
RF/4/RFG/2010/0159
ST/J001260/1
NE/P011195/1
Keywords: Science & Technology
Multidisciplinary Sciences
Science & Technology - Other Topics
CRUSTAL STRUCTURE
CHICXULUB CRATER
BASIN
ASYMMETRY
MODEL
GRAVITY
DENSITY
QUARTZ
General Science & Technology
Publication Status: Published
Online Publication Date: 2016-11-18
Appears in Collections:Earth Science and Engineering
Faculty of Engineering



Unless otherwise indicated, items in Spiral are protected by copyright and are licensed under a Creative Commons Attribution NonCommercial NoDerivatives License.

Creative Commons