Výsledky vyhledávání - "Karl Ramseyer"

Akademický článek

PALYNOLOGY AND CHEMOSTRATIGRAPHY OF MIDDLE TRIASSIC SUCCESSIONS IN NORTHERN SWITZERLAND (WEIACH, BENKEN, LEUGGERN) AND SOUTHERN GERMANY (WEIZEN, FREUDENSTADT)

Autor: PETER A. HOCHULI, ELKE SCHNEEBELI-HERMANN, PETER BRACK, KARL RAMSEYER, DANIEL REBETEZ

Publikováno v: Rivista Italiana di Paleontologia e Stratigrafia, Vol 126, Iss 2 (2020)

New Anisian to Ladinian palynology, palynofacies and stable carbon isotope records are reported for the Middle Triassic from deep Swiss wells (Weiach, Benken, Leuggern), well B3/13 (Weizen, S-Germany) and the type area of the Freudenstadt Formation i

Externí odkaz: https://doaj.org/article/dc5bc4bdc0f244b582118708b93744d9

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An evaporite-based high-resolution sulfur isotope record of Late Permian and Triassic seawater sulfate

Autor: Stefano M. Bernasconi, Karl Ramseyer, Irene Meier, Stephan Wohlwend, Peter Brack, Ulrich G. Wortmann, Hansruedi Bläsi, Peter A. Hochuli

Publikováno v: Geochimica et Cosmochimica Acta. 204:331-349

Variations in the sulfur isotope composition of dissolved marine sulfate through time reflect changes in the global sulfur cycle and are intimately related to changes in the carbon and oxygen cycles. A large shift in the sulfur isotope composition of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c9d5e47f6035daf15f4626d7621baddb
https://doi.org/10.1016/j.gca.2017.01.047

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Tectonically Controlled Diagenesis and Fluid Evolution in Al Khlata Reservoir Sandstones, Sultanate of Oman

Autor: Jos M.J. Terken, Carsten Büker, Peter Hoppe, Albert Matter, Joachim E. Amthor, Karl Ramseyer, Frauke Driehorst, Katalin Juhasz-Bodnar

Late Carboniferous to early Permian glacigenic Al Khlata Formation reservoirs account for one of the largest hydrocarbon productions in the Sultanate of Oman. Tectonic activities caused a varied subsidence, uplift, and erosion history resulting in pr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f8ec89e689e6b3972d926b0d93106793
https://doi.org/10.1306/13642173m1183804

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Dolomite microstructures between 390° and 700 °C: Indications for deformation mechanisms and grain size evolution

Autor: Andreas Ebert, D. Decrouez, Edwin Gnos, Karl Ramseyer, Alfons Berger

Publikováno v: Journal of Structural Geology. 89:144-152

Dolomitic marble on the island of Naxos was deformed at variable temperatures ranging from 390 °C to >700 °C. Microstructural investigations indicate two end-member of deformation mechanisms: (1) Diffusion creep processes associated with small grai

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f9465385b570bb042d7b6fec1c00db4f
https://doi.org/10.1016/j.jsg.2016.06.001

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Possible environmental effects on the evolution of the Alps-Molasse Basin system

Autor: Karl Ramseyer, Dirk Rieke-Zapp, Fritz Schlunegger

Publikováno v: Schlunegger, Fritz; Rieke-Zapp, Dirk; Ramseyer, Karl (2007). Possible environmental effects on the evolution of the Alps-Molasse Basin system. Swiss journal of geosciences, 100(3), pp. 383-405. Basel: SP Birkhäuser Verlag Basel 10.1007/s00015-007-1238-9

We propose three partly unrelated stages in the geodynamic evolution of the Alps and the sedimentary response of the Molasse Basin. The first stage comprises the time interval between ca. 35 and 20 Ma and is characterized by a high ratio between rate

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::913933e6c43332a373442358332c1c9a
http://doc.rero.ch/record/319943/files/15_2007_Article_1238.pdf

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Thermal dependence of luminescence lifetimes and radioluminescence in quartz

Autor: Sheng-Hua Li, Karl Ramseyer, Reuven Chen, Vasilis Pagonis, Mauro Fasoli, Marco Martini, M.L. Chithambo, Alicja Chruścińska

Publikováno v: Journal of Luminescence. 145:38-48

During time-resolved optical stimulation experiments (TR-OSL), one uses short light pulses to separate the stimulation and emission of luminescence in time. Experimental TR-OSL results show that the luminescence lifetime in quartz of sedimentary orig

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9fa6d97c6ed7d0d4867d758af96e57f8
https://doi.org/10.1016/j.jlumin.2013.07.022

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The Wabar impact craters, Saudi Arabia, revisited

Autor: Richard C. Greenwood, Beda A. Hofmann, Nicolas D. Greber, Mohammed A. Halawani, Edwin Gnos, M. Al Shanti, Y. Tarabulsi, M. Hakeem, Karl Ramseyer, Sanna Holm, Carl Alwmark

Publikováno v: Meteoritics & Planetary Science. 48:2000-2014

The very young Wabar craters formed by impact of an iron meteorite and are known to the scientific community since 1933. We describe field observations made during a visit to the Wabar impact site, provide analytical data on the material collected, a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::44925530ca2f8d2e1b920596bb39547d
https://doi.org/10.1111/maps.12218

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Implications of trace element composition of syntaxial quartz cements for the geochemical conditions during quartz precipitation in sandstones

Autor: Monika Koch-Müller, Karl Ramseyer, Thomas Pettke, Thomas Götte

Publikováno v: Sedimentology

A petrographic investigation revealed polyphase quartz cementation in the Finefrau Sandstone (Upper Carboniferous, Western Germany) and the Solling Sandstone (Lower Triassic, Central Germany). Three different cements could be distinguished in each sa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2232faa732503e9ac9e58190a55ce244
https://doi.org/10.1111/sed.12024

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Significance of trace elements in syntaxial quartz cement, Haushi Group sandstones, Sultanate of Oman

Autor: Karl Ramseyer, Katja Lehmann, Thomas Pettke

Publikováno v: CHEMICAL GEOLOGY

Trace element contents and distributions in authigenic quartz cement in deeply buried (2500 4000 m) Haushi Group sandstones from wells in Oman have been investigated in order to determine the factors that control trace element uptake during precipita

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f4382abe062af9d18e0cb554bd9e94d

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OXYGEN ISOTOPES AND CLIMATIC CONTROL OF OXFORDIAN CORAL REEFS (JURASSIC, TETHYS)

Autor: Jörn Geister, Bertrand Martin-Garin, Bernard Lathuilière, Karl Ramseyer

Publikováno v: Palaios
Palaios, Society for Sedimentary Geology, 2010, 25, pp.721-729. ⟨10.2110/palo.2010.p10-027r⟩
Palaios, Society for Sedimentary Geology, 2010, 25 (11), pp.721-729. ⟨10.2110/palo.2010.p10-027r⟩
Palaios, 2010, 25, pp.721-729. ⟨10.2110/palo.2010.p10-027r⟩
Palaios, 2010, 25 (11), pp.721-729. ⟨10.2110/palo.2010.p10-027r⟩

International audience; Stable isotope studies were carried out on shells of reef-dwelling brachiopods and oysters to evaluate the impact of climate changes on coral communities during the Oxfordian (Late Jurassic) in western Europe and northwestern

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e93858e0241250608e3f89025baf5fb4
https://doi.org/10.2110/palo.2010.p10-027r

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