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ejecta

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Journal Article
Journal: Geology
Published: 13 July 2023
Geology (2023) 51 (10): 899–903.
... out of 15 tesserae with lower echoes are correlated with fine-grained impact crater ejecta deposits that smooth the surface. We propose that distal ejecta deposition plays a major role in creating the observed range of tessera radar properties and obscuring aspects of their original formation...
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Journal Article
Published: 08 March 2023
Seismological Research Letters (2023) 94 (3): 1488–1494.
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Journal Article
Journal: Geology
Published: 31 August 2022
Geology (2022) 50 (11): 1276–1280.
... ~30% have been located. Until now there has been no way to distinguish them from “normal” terrestrial structures unless pieces of iron meteorites were found nearby. We show that the reflective properties of charcoal found in the proximal ejecta of small impact craters are distinct from those produced...
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Journal Article
Published: 10 August 2022
Mineralogical Magazine (2022) 86 (6): 920–928.
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Series: GSA Special Papers
Published: 03 May 2022
DOI: 10.1130/2021.2553(24)
EISBN: 9780813795539
... ABSTRACT This thesis embraces and expands upon a century of research into disparate geological enigmas, offering a unifying catastrophic explanation for events occurring during the enigmatic mid-Pleistocene transition. Billions of tons of “Australasian tektites” were dispatched as distal ejecta...
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Series: GSA Special Papers
Published: 03 May 2022
DOI: 10.1130/2021.2553(23)
EISBN: 9780813795539
... latitude and longitude plotter GlobePlot. A global ejecta pattern data set calculated using SASolver is presented. As visualized through GlobePlot, SASolver and Helix provide solutions to different forms of the A -to- B problem, in an effort to avoid errors similar to the historic misstep examples...
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Journal Article
Published: 01 May 2022
Reviews in Mineralogy and Geochemistry (2022) 87 (1): 965–1014.
... boundary. In 1991, a 170–180 km diameter crater was identified on the Yucatan peninsula as the impact site (Chicxulub crater) of a 10 to 15 km asteroid that induced the cataclysmic event responsible for the formation of the K–Pg worldwide ejecta horizons and caused the end-Cretaceous mass extinction...
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Journal Article
Journal: Geology
Published: 08 March 2022
Geology (2022) 50 (5): 636–640.
...David G. Burtt; Gregory A. Henkes; Thomas E. Yancey; Daniel Schrag Abstract The Chicxulub impact (in the northern Yucatan Penninsula, Mexico) marks the Cretaceous-Paleogene (K-Pg) boundary and is implicated in one of the five major extinctions. Researchers have examined ejecta from the Chicxulub...
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Journal Article
Published: 01 December 2021
Journal of the Geological Society (2022) 179 (3): jgs2021-055.
...M.J. Pankhurst; C.J. Stevenson; B.C. Coldwell Abstract Meteorite impacts load the atmosphere with dust and cover the Earth's surface with debris. They have long been debated as a trigger of mass extinctions throughout Earth history. Impact winters generally last <10 0 years, whereas ejecta...
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Journal Article
Journal: Geology
Published: 01 December 2021
Geology (2022) 50 (3): 311–315.
... the first detailed description of shock-triggered formation of skeletal quartz aggregates from silica-rich fluids occurring in impact melt masses from the Kamil crater (Egypt) ejecta curtain. The features of these aggregates support the idea that at local compositional heterogeneities such as fluid...
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Series: GSA Special Papers
Published: 02 August 2021
DOI: 10.1130/2021.2550(29)
EISBN: 9780813795508
..., and the morphology of the ejecta (single, double, or multiple layered eje