Large Meteorite Impacts and Planetary Evolution IV

Seismic images of Chicxulub impact melt sheet and comparison with the Sudbury structure
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Published:September 01, 2010
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CiteCitation
P.J. Barton, R.A.F. Grieve, J.V. Morgan, A.T. Surendra, P.M. Vermeesch, G.L. Christeson, S.P.S. Gulick, M.R. Warner, 2010. "Seismic images of Chicxulub impact melt sheet and comparison with the Sudbury structure", Large Meteorite Impacts and Planetary Evolution IV, Roger L. Gibson, Wolf Uwe Reimold
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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...
- Canada
- Chicxulub Crater
- cratering
- differentiation
- Eastern Canada
- geophysical methods
- geophysical profiles
- geophysical surveys
- high-velocity zones
- Huronian
- impact craters
- impact features
- impactites
- intrusions
- mapping
- melts
- metamorphic rocks
- Mexico
- Onaping Formation
- Ontario
- Precambrian
- prestack migration
- Proterozoic
- reflection methods
- ring structures
- seismic methods
- seismic migration
- seismic profiles
- sills
- Sudbury igneous complex
- Sudbury Structure
- surveys
- uplifts
- upper Precambrian
- velocity
- velocity structure
- Yucatan Mexico