2023
DOI: 10.1093/pnasnexus/pgad414
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Hot carbonates deep within the Chicxulub impact structure

Pim Kaskes,
Marta Marchegiano,
Marion Peral
et al.

Abstract: Constraining the thermodynamic conditions within an impact structure during and after hypervelocity impacts is extremely challenging due to the transient thermal regimes. This work uses carbonate clumped-isotope thermometry to reconstruct absolute temperatures of impact lithologies within and close to the ∼66 Myr old Chicxulub crater (Yucatán, México). We present stable oxygen (δ18O), carbon (δ13C), and clumped-isotope (Δ47) data for carbonate-bearing impact breccias, impact melt rock, and target lithologies f… Show more

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