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Systematic study of universal-stage measurements of planar deformation features in shocked quartz: Implications for statistical significance and representation of results
The presence of shocked quartz is one of the key lines of evidence for the impact origin of rocks. Crystallographic orientations of planar deformation feature (PDF) sets in shocked quartz have beenExpand
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Drill core LB‐08A, Bosumtwi impact structure, Ghana: Petrographic and shock metamorphic studies of material from the central uplift
During a recent drilling project sponsored by the International Continental Scientific Drilling Progam (ICDP), two boreholes (LB-07A and LB-08A) were drilled into the crater fill of the BosumtwiExpand
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The formation of peak rings in large impact craters
Drilling into Chicxulub's formation The Chicxulub impact crater, known for its link to the demise of the dinosaurs, also provides an opportunity to study rocks from a large impact structure. LargeExpand
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Drill core LB‐08A, Bosumtwi impact structure, Ghana: Geochemistry of fallback breccia and basement samples from the central uplift
The 1.07 Myr old Bosumtwi impact structure in Ghana (West Africa), which measures 10.5 km in diameter and is largely filled by Lake Bosumtwi, is associated with one of four currently known tektiteExpand
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Expedition 364 preliminary report: Chicxulub: drilling the K-Pg impact crater.
The Chicxulub impact crater, Mexico, is unique. It is the only known terrestrial impact structure that has been directly linked to a mass extinction event and the only terrestrial impact with aExpand
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Impact origin for the Hummeln structure (Sweden) and its link to the Ordovician disruption of the L chondrite parent body
Several studies of meteorites show that a large disruption of an asteroid occurred ca. 470 Ma in our solar system's asteroid belt. As a consequence, a large number of meteorite impacts occurred onExpand
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THE ORIGIN OF “ TOASTED ” QUARTZ IN IMPACTITES REVISI
Introduction: Quartz is one of the most abundant minerals in terrestrial crustal rocks. Viewed in pl anepolarized light with a petrographic microscope, qua rtz is clear (i.e., transparent). InExpand
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Petrography, geochemistry, and alteration of country rocks from the Bosumtwi impact structure, Ghana
Samples of the country rocks that likely constituted the target rocks at the 1.07 Myr old Bosumtwi impact structure in Ghana, West Africa, collected outside of the crater rim in the northern andExpand
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Shock Metamorphism of Bosumtwi Impact Crater Rocks, Shock Attenuation, and Uplift Formation
Shock wave attenuation rate and formation of central uplifts are not precisely constrained for moderately sized complex impact structures. The distribution of shock metamorphism in drilled basementExpand
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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 thatExpand
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