The Chicxulub impact and its environmental consequences

JV Morgan, TJ Bralower, J Brugger… - Nature Reviews Earth & …, 2022 - nature.com
The extinction of the dinosaurs and around three-quarters of all living species was almost
certainly caused by a large asteroid impact 66 million years ago. Seismic data acquired …

[HTML][HTML] Giant impacts and the origin and evolution of continents

TE Johnson, CL Kirkland, Y Lu, RH Smithies, M Brown… - Nature, 2022 - nature.com
Earth is the only planet known to have continents, although how they formed and evolved is
unclear. Here using the oxygen isotope compositions of dated magmatic zircon, we show …

Natural and experimental high-pressure, shock-produced terrestrial and extraterrestrial materials

M Miyahara, N Tomioka, L Bindi - Progress in Earth and Planetary Science, 2021 - Springer
Hypervelocity impacts are among the fundamental phenomena occurring during the
evolution of the solar system and are characterized by instantaneous ultrahigh pressure and …

Globally distributed iridium layer preserved within the Chicxulub impact structure

S Goderis, H Sato, L Ferrière, B Schmitz, D Burney… - Science …, 2021 - science.org
The Cretaceous-Paleogene (K-Pg) mass extinction is marked globally by elevated
concentrations of iridium, emplaced by a hypervelocity impact event 66 million years ago …

Overview of the morphology and chemistry of diagenetic features in the clay‐rich Glen Torridon unit of Gale crater, Mars

PJ Gasda, J Comellas, A Essunfeld… - Journal of …, 2022 - Wiley Online Library
Abstract The clay‐rich Glen Torridon region of Gale crater, Mars, was explored between sols
2300 and 3007. Here, we analyzed the diagenetic features observed by Curiosity, including …

The Nadir crater offshore West Africa: A candidate cretaceous-paleogene impact structure

U Nicholson, VJ Bray, SPS Gulick, B Aduomahor - Science Advances, 2022 - science.org
Evidence of marine target impacts, binary impact craters, or impact clusters are rare on
Earth. Seismic reflection data from the Guinea Plateau, West Africa, reveal a≥ 8.5-km-wide …

Formation of tridymite and evidence for a hydrothermal history at gale crater, Mars

AS Yen, RV Morris, DW Ming… - Journal of …, 2021 - Wiley Online Library
Abstract In August 2015, the Curiosity Mars rover discovered tridymite, a high‐temperature
silica polymorph, in Gale crater. The existing model for its occurrence suggests erosion and …

Thermal and structural history of impact ejecta deposits, Ries Impact Structure, Germany

IV Sleptsova, SA Gilder, F Dellefant… - Journal of …, 2024 - Wiley Online Library
Abstract The Ries impact structure (Germany) contains well‐preserved ejecta deposits
consisting of melt‐free lithic breccia (Bunte Breccia) overlain by suevite. To test their …

Shock impedance amplified impact deformation of zircon in granitic rocks from the Chicxulub impact crater

A Wittmann, AJ Cavosie, NE Timms, L Ferrière… - Earth and Planetary …, 2021 - Elsevier
Zircon is a precise chronometer and prominent recorder of impact deformation. However,
many impact-induced features in zircon are poorly calibrated, sometimes due to …

Relatively oxidized fluids fed Earth's earliest hydrothermal systems

D Trail, TM McCollom - Science, 2023 - science.org
The properties of high-temperature lithospheric fluids within the early Earth are poorly
known, yet many origin-of-life scenarios depend upon their characteristics. These fluids …