Chicxulub central crater structure: Initial results from physical property measurements and combined velocity and gravity modeling
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چکیده
منابع مشابه
Emplacement of cretaceous-tertiary boundary shocked quartz from chicxulub crater.
Observations on shocked quartz in Cretaceous-Tertiary (K-T) boundary sediments compellingly tied to Chicxulub crater raise three problems. First, in North America shocked quartz occurs above the main K-T ejecta layer. Second, shocked quartz is more abundant west than east of Chicxulub. Third, shocked quartz reached distances requiring initial velocities up to 8 kilometers per second, correspond...
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[1] In 2005 an extensive new seismic refraction data set was acquired over the central part of the Chicxulub impact crater, allowing us to image its structure with much better resolution than before. However, models derived from traveltime data are limited by the available ray coverage and the nonuniqueness that is inherent to all geophysical methods. Therefore, many different models can fit th...
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15 صفحه اولThree Dimensional Gravity Field Modelling of the Chicxulub Impact Crater. A
Introduction: The structure of the Chicxulub crater has been actively investigated by potential field modeling, seismic reflection and refraction surveys, and drilling during the decade since its recognition as the crater responsible for mass extinction which terminated the Cretaceous Period. Given the data sets that are now available to delineate crater structure a surprisingly diverse number ...
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ژورنال
عنوان ژورنال: Meteoritics & Planetary Science
سال: 2004
ISSN: 1086-9379,1945-5100
DOI: 10.1111/j.1945-5100.2004.tb01127.x