Restoring post-impact deformation at Sudbury: A circular argument

Details Restoring post-impact deformation at Sudbury: A circular argument Restoring post-impact deformation at Sudbury: A circular argument

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994georl..21..959r&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 21, no. 10, p. 959-962

Statistics

Computation

12

Computational Grids, Deformation, Geodynamics, Geomorphology, Geophysics, Igneous Rocks, Impact Damage, Lithology, Meteorite Craters, Meteoritic Damage, Structural Basins, Tectonics, Computerized Simulation, Geological Surveys, Imaging Techniques, Potential Fields, Seismic Waves, Wave Reflection

Scientific paper

Recent seismic reflection observations have shown a considerable shortening of the Sudbury Structure in a direction roughly perpendicular to its long axis. Using a kinematic reconstruction technique for gridded geophysical data, which takes into account non-uniformly distributed strain, we reconstruct the pre-deformation shape of the Sudbury Structure and show that it could have been circular at the time of its formation (approximately 1.85 Ga). This supports an impact origin.

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