Size and morphology of the Chicxulub impact crater

  title={Size and morphology of the Chicxulub impact crater},
  author={Joanna V. Morgan and Michael Warner and the Chicxulub Working Group and J. N. G. Brittan and Richard T. Buffler and A. Z. Camargo and Gail Christeson and Paul C Denton and Alan Russell Hildebrand and Richard W. Hobbs and Hamish Macintyre and Graeme Douglas Mackenzie and P. K. H. Maguire and Luis E. Mar{\'i}n and Yosio Nakamura and Mark Pilkington and Virgil L. Sharpton and David B. Snyder and Gerardo Su{\'a}rez and A. Sanchez Trejo},
The Chicxulub impact in Mexico has been linked to the mass extinction of species at the end of the Cretaceous period. From seismic data collected across the offshore portion of the impact crater, the diameter of the transient cavity is determined to be about 100 km. This parameter is critical for constraining impact-related effects on the Cretaceous environment, with previous estimates of the cavity diameter spanning an order of magnitude in impact energy. The offshore seismic data indicate… 
The impactites from the Cretaceous-Tertiary boundary Chicxulub crater in Yucatan are described. Chicxulub is one of the largest and best-preserved terrestrial craters. It is thus one of the only
Crustal structure of the Chicxulub Impact crater imaged with magnetotelluric exploration
The electrical resistivity structure of the Chicxulub Impact crater has been imaged using broadband magnetotelluric exploration. A 1–2 km thick sequence of conductive Tertiary sedimentary rocks was
Chicxulub and the exploration of large peak-ring impact craters through scientific drilling
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
Seismic attribute analysis of Chicxulub impact crater
Chicxulub crater formed ~ 66 Ma ago by an asteroid impact on the Yucatan platform in the southern Gulf of Mexico. The crater has a ~ 200 km rim diameter and has been covered by carbonate sediments up
The formation of peak rings in large impact craters
Rock samples from IODP/ICDP Expedition 364 support the dynamic collapse model for the formation of the Chicxulub crater and have implications for far-ranging subjects, from how giant impacts alter the climate on Earth to the morphology of crater-dominated planetary surfaces.
Expedition 364 summary
The Chicxulub impact crater, on the Yucatán Peninsula of México, is unique. It is the only known terrestrial impact structure that has been directly linked to a mass extinction event and the only
Geophysical data indicate that the 65.5 million years ago Chicxulub impact structure is a multi‐ring basin, with three sets of semicontinuous, arcuate ring faults and a topographic peak ring (PR).


Chicxulub Multiring Impact Basin: Size and Other Characteristics Derived from Gravity Analysis
Reprocessed gravity data over Northern Yucatan reveal three major rings and parts of a fourth ring, spaced similarly to those observed at multiring impact basins on other planets.
Size and structure of the Chicxulub crater revealed by horizontal gravity gradients and cenotes
IT is now widely believed that a large impact occurred on the Earth at the end of the Cretaceous period, and that the buried Chicxulub structure in Yucatán, Mexico, is the resulting crater24.
Surficial geology of the Chicxulub impact crater, Yucatan, Mexico
The Cenote Ring provides the most accurate position of the Chicxulub crater's center, and the associated faults, fractures, and stratigraphy indicate that the crater may be ∼240 km in diameter.
Bunte Breccia of the Ries: Continuous deposits of large impact craters
The Ries Crater, an impact structure of 26 km diameter in south Germany, is the largest terrestrial crater where substantial amounts of ejecta are preserved, on occasion >100 m deep. Further, the
Yucatán subsurface stratigraphy: Implications and constraints for the Chicxulub impact
Much of the discussion about the effects of an end-of-Cretaceous impact by a large extraterrestrial body in northwestern Yucatan has been done in the context of limited and partly erroneous published
Chicxulub Crater: A possible Cretaceous/Tertiary boundary impact crater on the Yucatán Peninsula, Mexico
We suggest that a buried 180-km-diameter circular structure on the Yucatan Peninsula, Mexico, is an impact crater. Its size and shape are revealed by magnetic and gravity-field anomalies, as well as
Impact Cratering: A Geologic Process
The mechanisms involved in the formation of impact craters are examined theoretically, reviewing the results of recent investigations. Topics addressed include crater morphology, stress waves in
Surface expression of the Chicxulub crater
Analyses of geomorphic, soil, and topographic data from the northern Yucatan Peninsula, Mexico, confirm that the buried Chicxulub impact crater has a distinct surface expression and that carbonate