Search Results - "Koeberl, C."

Delayed and variable late Archaean atmospheric oxidation due to high collision rates on Earth by Marchi, S., Drabon, N., Schulz, T., Schaefer, L., Nesvorny, D., Bottke, W. F., Koeberl, C., Lyons, T.

“…Frequent violent collisions of impactors from space punctuated the geological and atmospheric evolution of early Earth. It is generally accepted that the most…”
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Impact‐Generated Permeability and Hydrothermal Circulation at the Vredefort Impact Structure, South Africa by Marchi, S., Alexander, A., Trowbridge, A., Koeberl, C.

“…The 2.02 billion year old Vredefort impact structure in South Africa offers a unique opportunity to study large‐scale impact processes on Earth. Vredefort's…”
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Remnants of paleoflora in impact melt rocks of the El'gygytgyn crater (Chukotka, Russia) by Gurov, E. P., Permiakov, V. V., Koeberl, C.

“…Remnants of paleoflora were discovered in impact melt rocks from the El'gygytgyn crater, Chukotka, Russia. El'gygytgyn is a 3.58 Ma, 18 km diameter impact…”
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Metallic resources in smartphones by Bookhagen, B., Bastian, D., Buchholz, P., Faulstich, M., Opper, C., Irrgeher, J., Prohaska, T., Koeberl, C.

“…53 metallic elements from smartphones were investigated with regard to metal prices, metal production, and content in comparison to mined ores. The metal…”
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Martian subsurface cryosalt expansion and collapse as trigger for landslides by Bishop, J. L., Yeşilbaş, M., Hinman, N. W., Burton, Z. F. M., Englert, P. A. J., Toner, J. D., McEwen, A. S., Gulick, V. C., Gibson, E. K., Koeberl, C.

“…On Mars, seasonal martian flow features known as recurring slope lineae (RSL) are prevalent on sun-facing slopes and are associated with salts. On Earth,…”
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Pseudotachylitic breccia from the Dhala impact structure, north-central India: Texture, mineralogy and geochemical characterization by Pati, J.K., Reimold, W.U., Greshake, A., Schmitt, R.T., Koeberl, C., Pati, P., Prakash, K.

“…Pseudotachylitic breccia (PTB) occurs in a drill core from the crater floor of the 11km diameter, Proterozoic Dhala impact structure, India. PTBs were…”
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Ascent of Dinosaurs Linked to an Iridium Anomaly at the Triassic-Jurassic Boundary by Olsen, P. E., Kent, D. V., H.-D. Sues, Koeberl, C., Huber, H., Montanari, A., Rainforth, E. C., Fowell, S. J., Szajna, M. J., Hartline, B. W.

“…Analysis of tetrapod footprints and skeletal material from more than 70 localities in eastern North America shows that large theropod dinosaurs appeared less…”
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Deep Drilling into the Chesapeake Bay Impact Structure by Gohn, G.S, Koeberl, C, Miller, K.G, Reimold, W.U, Browning, J.V, Cockell, C.S, Horton, J.W. Jr, Kenkmann, T, Kulpecz, A.A, Powars, D.S, Sanford, W.E, Voytek, M.A

“…Samples from a 1.76-kilometer-deep corehole drilled near the center of the late Eocene Chesapeake Bay impact structure (Virginia, USA) reveal its geologic,…”
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Experimental shock deformation in zircon: a transmission electron microscopic study by Leroux, H, Reimold, W.U, Koeberl, C, Hornemann, U, Doukhan, J.-C

“…In recent years, apparently shock-induced and, thus, impact-characteristic microdeformations, in the form of planar microdeformation features and so-called…”
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MIDAS – The Micro-Imaging Dust Analysis System for the Rosetta Mission by Riedler, W, Torkar, K, Jeszenszky, H, Romstedt, J, Alleyne, HStC, Arends, H, Barth, W, Biezen, JVD, Butler, B, Ehrenfreund, P, Fehringer, M, Fremuth, G, Gavira, J, Havnes, O, Jessberger, E K, Kassing, R, Kloeck, W, Koeberl, C, Levasseur-Regourd, A C, Maurette, M, Ruedenauer, F, Schmidt, R, Stangl, G, Steller, M, Weber, I

“…The International Rosetta Mission is set for a rendezvous with Comet 67 P/Churyumov-Gerasimenko in 2014. On its 10 year journey to the comet, the spacecraft…”
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Provenance and tectonic setting of Late Proterozoic Buem sandstones of southeastern Ghana: Evidence from geochemistry and detrital modes by Osae, Shiloh, Asiedu, Daniel K., Banoeng-Yakubo, Bruce, Koeberl, Christian, Dampare, Samuel B.

“…The petrography, as well as major and trace element (including rare earth element) compositions of 10 sandstone samples from the Late Proterozoic Buem…”
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Sulfur geochemistry across a terrestrial Permian–Triassic boundary section in the Karoo Basin, South Africa by Maruoka, T, Koeberl, C, Hancox, P.J, Reimold, W.U

“…Concentrations of sulfur and carbon, and isotopic compositions of sulfur were determined in sedimentary rocks from a section across the terrestrial…”
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A statistical dynamical study of meteorite impactors: A case study based on parameters derived from the Bosumtwi impact event by Galiazzo, M.A., Bazsó, Á., Huber, M.S., Losiak, A., Dvorak, R., Koeberl, C.

“…The study of meteorite craters on Earth provides information about the dynamic evolution of bodies within the Solar System. the Bosumtwi crater is a well…”
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Nature of the archean midcrust in the core of the Vredefort dome, Central Kaapvaal Craton, South Africa by Lana, C., Reimold, W.U., Gibson, R.L., Koeberl, C., Siegesmund, S.

“…Extreme uplift associated with the formation of the 2.02 Ga Vredefort dome has exposed a substantial cross section through the crystalline early Archean…”
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Instrumental neutron activation analysis of geochemical and cosmochemical samples : a fast and reliable method for small sample analysis by KOEBERL, C

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Mineralogical and chemical composition and distribution of rare earth elements in clay-rich sediments from central Uganda by Nyakairu, George W. A., Koeberl, Christian

“…Clay-rich sediments from the Kajjansi, Kitiko, Kitetika, and Ntawo valleys in central Uganda were analyzed for mineralogical and chemical composition,…”
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Geochemistry of intermediate to siliceous volcanic rocks of the Rooiberg Group, Bushveld Magmatic Province, South Africa by Buchanan, P., Reimold, W., Koeberl, C., Kruger, F.

“… The volcanic Rooiberg Group represents the earliest phase of Bushveld-related magmatism and comprises, in some areas, the floor and roof rocks of the…”
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Evidence that Lake Cheko is not an impact crater by Collins, G. S., Artemieva, N., Wünnemann, K., Bland, P. A., Reimold, W. U., Koeberl, C.

“…In a provocative paper Gasperini et al. (2007) suggest that Lake Cheko, a ∼300‐m‐wide lake situated a few kilometres downrange from the assumed epicentre of…”
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Rb–Sr and Sm–Nd isotopic compositions of the Rooiberg Group, South Africa: early Bushveld-related volcanism by Buchanan, P.C, Reimold, W.U, Koeberl, C, Kruger, F.J

“…The Rooiberg Group is a 6-km-thick sequence of mostly volcanic rocks, which represent the first phase of magmatic activity associated with the Bushveld…”
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Geochemistry of the mafic rocks of the ophiolitic fold and thrust belts of southern Ethiopia: constraints on the tectonic regime during the Neoproterozoic (900–700 Ma) by Yibas, B, Reimold, W.U, Anhaeusser, C.R, Koeberl, C

“…There are four Neoproterozoic ophiolitic belts in southern Ethiopia—Megado, Kenticha, Moyale-El Kur and Bulbul. The mafic rocks, which form the bulk of these…”
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