Zobrazeno 1 - 10
of 1 680
pro vyhledávání: '"shock metamorphism"'
Autor:
Wolf Uwe Reimold
Publikováno v:
Geosciences, Vol 14, Iss 4, p 105 (2024)
A possible impact crater at Mahout in Oman was recently proposed by Nasir et al. (2023 [1]). They alleged that “crater” morphology, shatter cones, shock metamorphic evidence in quartz, plagioclase, and calcite, as well as initial geochemical info
Externí odkaz:
https://doaj.org/article/a8367e832e0d45e28e2a11c2c831e4a4
Akademický článek
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Publikováno v:
Geosciences, Vol 13, Iss 12, p 363 (2023)
The present work reports on the first evidence of a possible hypervelocity impact crater in the Sultanate of Oman. The impact origin of the structure is determined based on field observations, microscopic observations of shatter cones, planar fractur
Externí odkaz:
https://doaj.org/article/c4dce55eb1e54bfc8a27ed9646fe1dea
Autor:
Jinping Hu, Thomas G. Sharp
Publikováno v:
Progress in Earth and Planetary Science, Vol 9, Iss 1, Pp 1-22 (2022)
Abstract The goal of classifying shock metamorphic features in meteorites is to estimate the corresponding shock pressure conditions. However, the temperature variability of shock metamorphism is equally important and can result in a diverse and hete
Externí odkaz:
https://doaj.org/article/0dee2c41c2464b27b070f7f3070decdc
Autor:
Haruka Ono, Kosuke Kurosawa, Takafumi Niihara, Takashi Mikouchi, Naotaka Tomioka, Junko Isa, Hiroyuki Kagi, Takuya Matsuzaki, Hiroshi Sakuma, Hidenori Genda, Tatsuhiro Sakaiya, Tadashi Kondo, Masahiro Kayama, Mizuho Koike, Yuji Sano, Masafumi Murayama, Wataru Satake, Takafumi Matsui
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 1, Pp n/a-n/a (2023)
Abstract Basaltic rocks occur widely on the terrestrial planets and differentiated asteroids, including the asteroid 4 Vesta. We conducted a shock recovery experiment with decaying compressive pulses on a terrestrial basalt at the Chiba Institute of
Externí odkaz:
https://doaj.org/article/f6350cc1eb2d493e80a4083a4c6dc48d
Akademický článek
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Publikováno v:
Progress in Earth and Planetary Science, Vol 8, Iss 1, Pp 1-26 (2021)
Abstract Hypervelocity impacts are among the fundamental phenomena occurring during the evolution of the solar system and are characterized by instantaneous ultrahigh pressure and temperature. Varied physicochemical changes have occurred in the build
Externí odkaz:
https://doaj.org/article/b4d869e9801c49d1a82d83cf7cc3e098
Akademický článek
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Publikováno v:
Earth, Planets and Space, Vol 73, Iss 1, Pp 1-18 (2021)
Abstract Ringwoodite and wadsleyite are the high-pressure polymorphs of olivine, which are common in shocked meteorites. They are the major constituent minerals in the terrestrial mantle. NWA 8705, an olivine-phyric shergottite, was heavily shocked,
Externí odkaz:
https://doaj.org/article/ec4a122e1f82480dab5af23a939419eb
Publikováno v:
Geo Journal of Tourism and Geosites, Vol 35, Iss 2, Pp 315-321 (2021)
In the past of the earth several asteroids and meteoroids have been impacted, but most of these collisions have been eroded and today there are only sometimes direct and indirect indications, such as massive extinctions of species in the form of foss
Externí odkaz:
https://doaj.org/article/cb0e41128d3e46a994bbda128353dd88