The Chicxulub impact and its environmental consequences
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 …
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
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 …
unclear. Here using the oxygen isotope compositions of dated magmatic zircon, we show …
Natural and experimental high-pressure, shock-produced terrestrial and extraterrestrial materials
Hypervelocity impacts are among the fundamental phenomena occurring during the
evolution of the solar system and are characterized by instantaneous ultrahigh pressure and …
evolution of the solar system and are characterized by instantaneous ultrahigh pressure and …
Globally distributed iridium layer preserved within the Chicxulub impact structure
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 …
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
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 …
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
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 …
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 …
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 …
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
Zircon is a precise chronometer and prominent recorder of impact deformation. However,
many impact-induced features in zircon are poorly calibrated, sometimes due to …
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 …
known, yet many origin-of-life scenarios depend upon their characteristics. These fluids …