 | | Journal (article/letter/editorial) | | from the Yaxcopoil-1 drill core in the Chicxulub impact structure Horton E. NEWSOM1*, Melissa J. NELSON1...concentrations in the upper suevite impact breccias than in the lower impact melt deposits by factors of 3...large terrestrial impact structures such as the Sudbury structure, the Ries crater, the Manson structure... Aqueous and hydrothermal processes in Martian impact craters may have contributed to the mobile element...in association with the impact melt deposits on the crater floor, at the crater rim, in the central uplift |  | | Journal (article/letter/editorial) | | http://meteoritics.org Fluid inclusion evidence for impact-related hydrothermal fluid and hydrocarbon migration...Yaxcopoil-1 (Yax-1) have revealed compelling evidence for impact-induced hydrothermal alteration. Fluid circulation...derive from cracking of pre-impact organic matter. The center of the crater is assumed to be the source...convection of local pore fluids, possibly triggered by impact-induced conductive heating of the sediments. INTRODUCTION...to cause hydrothermal fluid circulation in the crater fill and surrounding rocks due to the release of |  | Simpson, S.L., Osinski, G.R., Longstaffe, F.J., Schmieder, M., Kring, D.A. (2020) Hydrothermal alteration associated with the Chicxulub impact crater upper peak-ring breccias. Earth and Planetary Science Letters, 547. 116425pp. doi:10.1016/j.epsl.2020.116425 | Journal (article/letter/editorial) | | Hydrothermal alteration associated with the Chicxulub impact crater upper peak-ring breccias S.L. Simpson a,∗ ,...McKinnon Keywords: Chicxulub impact impact generated hydrothermal systems impact cratering astrobiology a...a b s t r a c t The 66 Ma, ∼180 km Chicxulub impact structure in the northern Yucatán peninsula and southern...Gulf of Mexico is the best-preserved large impact crater on Earth with a well-developed peak ring. The...layer of impact melt rocks (Units 3A and B); melt-bearing breccias (Units 2A–C); and post-impact sedimentary |
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