Importance of pre-impact crustal structure for the asymmetry of the Chicxulub impact crater

  title={Importance of pre-impact crustal structure for the asymmetry of the Chicxulub impact crater},
  author={Sean P. S. Gulick and Penny J. Barton and Gail L. Christeson and Joanna V. Morgan and Matthew A. McDonald and Keren Mendoza-Cervantes and Zulmacristina F. Pearson and A. T. Surendra and Jaime Urrutia‐Fucugauchi and Peggy M. Vermeesch and Michael Warner},
  journal={Nature Geoscience},
The final geometry of an impact crater can be significantly influenced by the geological and geomorphological structure of the impact site; therefore, it may not on its own provide accurate information regarding the direction and angle of impact. 
Structural geology: The buried record of Chicxulub
Impact craters often have asymmetric shapes, which have been used to infer the direction and angle of impact. But pre-existing structural or topographic heterogeneities also play an important role in
Geoelectric evidence for centripetal resurge of impact melt and breccias over central uplift of Araguainha impact structure
We present five profiles from electrical resistivity tomography (ERT), with surface constraints and gravity data, in the central uplift of the Araguainha impact structure in central Brazil. The
2뀀Ƞ km diameter asteroid impacts using the properties of ejecta from the K-Pg impact 3뀀Ƞ
8뀀ഀȠ 9뀀ഀȠ Abstract. About 66 million years ago an asteroid about 10 km in diameter struck the 10뀀ഀȠ Yucatan Peninsula creating the Chicxulub crater. The crater has been dated and found to 11뀀ഀȠ be
Structural uplift beneath the Chicxulub impact structure
Models of the central structure of large impact craters are poorly constrained, partly because of the lack of well-preserved terrestrial examples, and partly because of the extreme nature of impact
Formation of the crater suevite sequence from the Chicxulub peak ring: A petrographic, geochemical, and sedimentological characterization
Figures S1–S7 and Tables S1 and S2.
Peering inside the peak ring of the Chicxulub Impact Crater—its nature and formation mechanism
The IODP‐ICDP Expedition 364 drilled into the Chicxulub crater, peering inside its well‐preserved peak ring. The borehole penetrated a sequence of post‐impact carbonates and a unit of suevites and
Connectivity in a Karst System Using Electrical Resistivity Tomography and Network Theory
This study implements the network theory to study the hydrological connectivity between a group of 11 cenotes within the Ring of Cenotes in northwestern Yucatán, México and found evidence of the existence of water cavities in the study area.
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
Quantifying the Release of Climate‐Active Gases by Large Meteorite Impacts With a Case Study of Chicxulub
Potentially hazardous asteroids and comets have hit Earth throughout its history, with catastrophic consequences in the case of the Chicxulub impact. Here we reexamine one of the mechanisms that


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
Hydrocode modeling of oblique impacts: The fate of the projectile
Abstract— All impacts are oblique to some degree. Only rarely do projectiles strike a planetary surface (near) vertically. The effects of an oblique impact event on the target are well known,
Asymmetric terracing of lunar highland craters - Influence of pre-impact topography and structure
Tenth lunar and planetary science conference. Houston, TX, United States. March 19-23, 1979.
Experimental studies of oblique impact.
Meteoritic materials most probably impact planetary bodies along oblique trajectories inclined less than 45 deg above their surfaces. Laboratory studies of hypervelocity impacts against rock and
Size and morphology of the Chicxulub impact crater
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
Cretaceous-Tertiary (Chicxulub) impact angle and its consequences
The Chicxulub impact structure exhibits asymmetries in its geophysical signatures that closely resemble asymmetries produced by oblique impacts in laboratory experiments and recognized on planetary
Hydrocode simulation of the Chicxulub impact event and the production of climatically active gases
We constructed a numerical model of the Chicxulub impact event using the Chart-D Squared (CSQ) code coupled with the ANalytic Equation Of State (ANEOS) package. In the simulations we utilized a
Impact tectonics in the core of the Vredefort dome, South Africa: Implications for central uplift formation in very large impact structures
Abstract— The 80 km wide Vredefort dome presents a unique opportunity to investigate the deep levels of the central uplift of a very large impact structure. Exposure of progressively older strata in
Trajectories and distribution of material ejected from the Chicxulub impact crater: Implications for postimpact wildfires
[1] The trajectories of low- and high-energy ejecta from the Chicxulub impact crater have been computed using a numerical code and compared with analyses of debris deposited in K/T boundary sections.