Zobrazeno 1 - 10
of 388
pro vyhledávání: '"Planar deformation features"'
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
The Keurusselka structure is one of Finland's 12 meteorite impact structures-one of the world's oldest (1150 +/- 10 Ma) and the largest of its kind in Finland. Findings of numerous well-formed shatter cones in a wide area have helped define and prove
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::674ba695fa17d8218b64370b20629d43
http://hdl.handle.net/10138/354339
http://hdl.handle.net/10138/354339
Akademický článek
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Publikováno v:
Gondwana Research. 91:121-128
The 7 km-diameter Jeokjung–Chogye Basin in Hapcheon, southeastern Korean Peninsula, is well-known for its bowl-shaped geomorphology. Here we report the first direct evidence of impact cratering from this basin based our investigations on a 142 m-de
Autor:
Kamal Lochan Pruseth, Sabyasachi Maiti, Dewashish Upadhyay, Klaus Mezger, J. K. Nanda, Ajay Singh, Dilip Saha
Publikováno v:
Journal of the Geological Society of India. 97:35-47
The Simlipal complex in eastern India is an elliptical structure with diameter of ca. 50 km coinciding with an elliptical region of high gravity. It overlies the Archaean basement of the Singhbhum craton and has a ring structure characterized by comp
Publikováno v:
Bulletin of the Geological Society of Finland, Vol 85, Iss 1, Pp 83-101 (2013)
Kärdla and Neugrund are two Early Palaeozoic offshore impact structures located some 50 km apart along the Estonian coast of the Baltic Sea. They share many similarities but differing features are also found. The Kärdla impact structure is located
Externí odkaz:
https://doaj.org/article/0a8fe55f82754eb2aefb923f668b5710
Autor:
Ludovic Ferrière, Jean-Guillaume Feignon, Christian Koeberl, Gordon R. Osinski, Lidia Pittarello
Publikováno v:
Meteoritics & Planetary Science
Shocked quartz and feldspar grains commonly exhibit planar microstructures, such as planar fractures, planar deformation features, and possibly microtwins, which are considered to have formed by shock metamorphism. Their orientation and frequency are
Publikováno v:
Chinese Science Bulletin. 65:948-954
This study reports the discovery of Yilan crater, a newly identified impact structure in northeast China. The crater has a rim-to-rim diameter of 1.85 km, and is located in Yilan County of Heilongjiang Province. The latitude and longitude coordinates
Akademický článek
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Autor:
Timothy Witwer, James P. Kennett, Kurt Langworthy, Edward C. Swindel, Ted E. Bunch, George Howard, Malcolm A. LeCompte, Dale Batchelor, Phillip J. Silvia, Mark C. L. Patterson, Allen West, Joel Kathan, Siddhartha Mitra, C. B. Mooney, Christopher R. Moore, Wendy S. Wolbach, T. David Burleigh, James H. Wittke, Gunther Kletetschka, A. Victor Adedeji, Robert E. Hermes
Publikováno v:
Scientific Reports 11(1),. (2021)
Scientific Reports
Scientific Reports, Vol 11, Iss 1, Pp 1-64 (2021)
Scientific Reports
Scientific Reports, Vol 11, Iss 1, Pp 1-64 (2021)
We present evidence that in ~ 1650 BCE (~ 3600 years ago), a cosmic airburst destroyed Tall el-Hammam, a Middle-Bronze-Age city in the southern Jordan Valley northeast of the Dead Sea. The proposed airburst was larger than the 1908 explosion over Tun