Chicxulub and the exploration of large peak-ring impact craters through scientific drilling

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doi: 10.1130/GSATG352A.1
Author(s): Kring, David A.; Claeys, Philippe; Gulick, Sean P. S.; Morgan, Joanna V.; Collins, Gareth S.
Author Affiliation(s): Primary:
Lunar and Planetary Institute, Houston, TX, United States
Other:
Vrije Universiteit Brussel, Belgium
University of Texas at Austin, United States
Imperial College London, United Kingdom
Volume Title: GSA Today
Source: GSA Today, 27(10), p.4-8. Publisher: Geological Society of America (GSA), Boulder, CO, United States. ISSN: 1052-5173
Note: In English. 33 refs.; illus., incl. sect., sketch maps
Summary: The Chicxulub crater is the only well-preserved peak-ring crater on Earth and linked, famously, to the K-T or K-Pg mass extinction event. For the first time, geologists have drilled into the peak ring of that crater in the International Ocean Discovery Program and International Continental Scientific Drilling Program (IODP-ICDP) Expedition 364. The Chicxulub impact event, the environmental calamity it produced, and the paleobiological consequences are among the most captivating topics being discussed in the geologic community. Here we focus attention on the geological processes that shaped the ∼200-km-wide impact crater responsible for that discussion and the expedition's first year results.
Year of Publication: 2017
Research Program: IODP Integrated Ocean Drilling Program
IODP2 International Ocean Discovery Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; 23 Surficial Geology, Geomorphology; Atlantic Ocean; Basement; Boreholes; Breccia; Cenozoic; Chicxulub Crater; Cores; Cretaceous; Drilling; Expedition 364; Granites; Gulf of Mexico; IODP Site M0077; Igneous rocks; Impact craters; Impact features; International Ocean Discovery Program; K-Pg boundary; Low-velocity zones; Lower Paleocene; Melts; Mesozoic; Metamorphism; Mexico; Moon; North Atlantic; Numerical models; Paleobiology; Paleocene; Paleogene; Plutonic rocks; Schrodinger Basin; Shock metamorphism; Stratigraphic boundary; Tertiary; Thickness; Upper Cretaceous; Yucatan Peninsula
Coordinates: N212701 N212701 W0895658 W0895658
Record ID: 2019020587
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute.