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kenkmann

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Series: GSA Special Papers
Published: 01 January 2005
DOI: 10.1130/0-8137-2384-1.85
Journal Article
Journal: GSA Bulletin
Published: 11 February 2022
GSA Bulletin (2022) 134 (9-10): 2469–2484.
...Thomas Kenkmann; Louis Müller; Allan Fraser; Doug Cook; Kent Sundell; Auriol S.P. Rae Abstract A large number of small impact structures have been discovered in Wyoming, USA, and we raise the question of how this accumulation occurred. We document 31 crater structures of 10–70 m diameter...
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Series: GSA Special Papers
Published: 02 August 2021
DOI: 10.1130/2021.2550(16)
EISBN: 9780813795508
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Series: GSA Special Papers
Published: 02 August 2021
DOI: 10.1130/2021.2550(19)
EISBN: 9780813795508
... of an oblique impact and have identified up-range and down-range zones ( Shoemaker and Shoemaker, 1985 , 1996 ; Kenkmann and Poelchau, 2013 ; Kenkmann et al., 2014) . The geology of the central uplift exposes mainly the Warton Sandstone (1786 ± 14–1704 ± 7 Ma) and Pentecost Sandstone (1774 ± 9–1704 ± 14 Ma...
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Series: GSA Special Papers
Published: 02 August 2021
DOI: 10.1130/2021.2550(03)
EISBN: 9780813795508
... is currently not contained in the Earth Impact Database (2020) , which contains 27 entries for Australia, but it is listed in Dunster et al. (2014) , Kenkmann (2019) , and the atlas of terrestrial impact structures ( Gottwald et al., 2020) . Intense folding and faulting were recognized in the region...
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Series: GSA Special Papers
Published: 02 August 2021
DOI: 10.1130/2021.2550(28)
EISBN: 9780813795508
...., 2011 ; Kenkmann and Wulf, 2018) . The terminology for the so-called “layered” or “rampart” craters is still a matter of debate (see discussion in Robbins et al., 2018 ), but we will follow the widely used and intuitive classification of Barlow et al. (2000) . Here, the craters are commonly...
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Series: GSA Special Papers
Published: 02 August 2021
DOI: 10.1130/2021.2550(21)
EISBN: 9780813795508
... of the planar fracture at an angle >35°. They form when planar fractures are activated as shear planes and indicate high differential stresses ( Poelchau and Kenkmann, 2011 ; Ebert et al., 2020) . In an experimentally shocked quartz-feldspar assembly, Poelchau and Kenkmann (2011) observed that feather...
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Journal Article
Journal: Geology
Published: 01 March 2008
Geology (2008) 36 (3): 227–230.
...Elmar Buchner; Thomas Kenkmann Abstract Upheaval Dome is a unique circular structure on the Colorado Plateau in SE Utah, the origin of which has been controversially discussed for decades. It has been interpreted as a crypto volcanic feature, a salt diapir, a pinched-off salt diapir, and an eroded...
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Journal Article
Journal: Geology
Published: 18 May 2020
Geology (2020) 48 (8): 814–818.
...Matthias Ebert; Michael H. Poelchau; Thomas Kenkmann; Bennet Schuster Abstract The Chicxulub crater (Yucatán Peninsula, Mexico) is considered exceptional in many scientific aspects; morphologically it is the only known impact structure on Earth with a well-preserved peak ring. Recent drilling...
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Image
Figure 6. Central uplift structure mapped at base Cretaceous. (A) Jurassic ...
Published: 01 March 2005
the conical uplift and radial fault set. (D) (i) Interpreted structural elements from maps (A, B). (ii) For comparison, generic model of a complex impact crater floor, after Figure 1 of Kenkmann (2002)
Series: European Mineralogical Union Notes in Mineralogy
Publisher: European Mineralogical Union
Published: 01 January 2015
DOI: 10.1180/EMU-notes.15.4
EISBN: 9780903056564
... have been discussed by Deutsch and Scharer (1994) , and Jourdan et al. (2012) , and cratering mechanics have been reviewed recently by Kenkmann et al. (2014) . Answers to the frequently asked questions “is it a crater?” and “is the mineral shocked?” were given by French and Koeberl (2010...
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Journal Article
Journal: Geology
Published: 01 May 2013
Geology (2013) 41 (5): 531–534.
...Sebastian Sturm; Gerwin Wulf; Dietmar Jung; Thomas Kenkmann Abstract The ejecta blankets of impact craters formed on a planetary body that is free of significant quantities of volatiles show substantial differences from those formed on a volatile-rich planetary body. Craters in volatile-rich...
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Series: GSA Special Papers
Published: 01 September 2010
DOI: 10.1130/2010.2465(23)
Journal Article
Journal: Geology
Published: 01 May 2009
Geology (2009) 37 (5): 459–462.
...Thomas Kenkmann; Michael H. Poelchau Abstract Nearly all meteorite impact craters on Earth are circular. However, ~4% of craters should be formed by impacts at angles lower than 12° from the horizontal, which should result in elongated crater structures. The crater-forming process that produces...
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Series: GSA Special Papers
Published: 01 January 2009
DOI: 10.1130/2009.2458(16)
Series: GSA Special Papers
Published: 01 January 2009
DOI: 10.1130/2009.2458(25)
Journal Article
Journal: GSA Bulletin
Published: 01 September 2007
GSA Bulletin (2007) 119 (9-10): 1151–1167.
...A. Wittmann; T. Kenkmann; L. Hecht; D. Stöffler Abstract Formation conditions of suevite-like impactites from an ∼100 m thick drill core sequence through the Cretaceous-Tertiary Chicxulub crater were reconstructed from empirical data obtained by petrologic and image analytical methods...
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Series: GSA Special Papers
Published: 01 January 2005
DOI: 10.1130/0-8137-2384-1.1
Series: GSA Special Papers
Published: 01 January 2005
DOI: 10.1130/0-8137-2384-1.25
Series: GSA Special Papers
Published: 01 January 2005
DOI: 10.1130/0-8137-2384-1.43