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dc.contributor.advisor Hansen, Bent T. Prof. Dr. de
dc.contributor.author Nordhoff, Peter de
dc.date.accessioned 2013-01-31T07:53:01Z de
dc.date.available 2013-01-31T07:53:01Z de
dc.date.issued 2005-07-20 de
dc.identifier.uri http://hdl.handle.net/11858/00-1735-0000-000D-F209-7 de
dc.format.mimetype application/pdf de
dc.language.iso eng de
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/ de
dc.title Stable isotope investigations on speleothems from different cave systems in Germany. de
dc.type doctoralThesis de
dc.title.translated Stabile Isotopen-Untersuchungen an Speläothemen aus verschiedenen Höhlensystemen in Deutschland. de
dc.contributor.referee Wiegand, Bettina Dr. de
dc.date.examination 2005-06-13 de
dc.subject.dnb 550 Geowissenschaften de
dc.subject.gok VAO 200 de
dc.subject.gok VDI 200 de
dc.subject.gok VDI 210 de
dc.subject.gok VDI 220 de
dc.subject.gok VEB 127 de
dc.subject.gok VEB 147 de
dc.subject.gok VJJ 100 de
dc.description.abstracteng Seven speleothems from six independent cave systems in Germany were investigated on their suitability as paleoclimatic archives. The caves are located in the Jurassic Limestones of the Swabian/Franconian Alb (southern Germany) and in a small-scale Devonian (reef) complex of the Harz Mountains (northern Germany). Based on the chronological control using 234U/230Th (TIMS) ages, δ18O/δ13C timeseries of the speleothems were established and related to known paleoclimatic events. Results of the present-day assessment of the cave systems demonstrated that the cave temperature responses; the stable isotopic abundances of the dripwater, and present-day cave calcites reflect mean annual surface air temperatures as well as established isotopic equilibrium conditions during cave calcite precipitation. However, existing biases have been monitored but most of them may be deduced to anthropogenic influences like mining operations (Zaininger-Cave, Swabian Alb) or showcave business (Hermann’s- and Baumann’s-Cave, Harz Mountains). Although the scenarios leave partially an imprint on present-day spelean calcites, like the indicated non-equilibrium conditions at the Zaininger-Cave, their temporal imprint is restricted very much to the last couple of decennial years and thus assumed not to influence the paleorecords at all. Since the δ18O compositions of present-day calcite precipitates are primarily controlled by temperature, the sites may thus be suitable for paleoclimatic investigations from a today perspective. Since the paleorecords of the Hermann’s- and Baumann’s-Cave stalagmites (Harz Mountains) display ages, which are not in chronological order, a construction of timeseries was not possible. Past stable isotopic equilibrium conditions of the remaining paleorecords were verified using the single layer ”Hendy-Test” as well as δ18O/δ13C regression analyzes of the subsample profiles. Late Pleistocene growth periods were found in the Paleocave Hunas Stalagmite (79373 de
dc.contributor.coReferee Sauter, Martin Prof. Dr. de
dc.contributor.thirdReferee Schneider, Jürgen Prof. Dr. de
dc.subject.topic Mathematics and Natural Science de
dc.subject.ger Speläotheme de
dc.subject.ger Stalagmiten de
dc.subject.ger Stalaktiten de
dc.subject.ger Tropfwasser de
dc.subject.ger Deutschland de
dc.subject.ger Schwäbische Alb de
dc.subject.ger Fränkische Alb de
dc.subject.ger Harz de
dc.subject.ger Paläoklima de
dc.subject.ger δ18O/δ13C de
dc.subject.ger stabile Isotope de
dc.subject.ger 234U/230Th de
dc.subject.ger TIMS de
dc.subject.ger Zaininger Höhle de
dc.subject.ger Hintere Kohlhaldenhöhle de
dc.subject.ger Baumannshöhle de
dc.subject.ger Herrmannshöhle de
dc.subject.ger Mühlbachquellhöhle de
dc.subject.ger Höhlenruine Hunas de
dc.subject.ger thermodynamische Equilibrium de
dc.subject.ger kinetische Fraktionierung de
dc.subject.ger OIS2 de
dc.subject.ger Jüngere Dryas de
dc.subject.ger Bölling/Alleröd de
dc.subject.ger T1 de
dc.subject.ger Pleistozän de
dc.subject.ger Holozän de
dc.subject.ger 8.2ka de
dc.subject.ger Holozänes Optimum de
dc.subject.eng speleothem de
dc.subject.eng stalagmites de
dc.subject.eng stalactites de
dc.subject.eng dripwater de
dc.subject.eng Germany de
dc.subject.eng Swabian Alb de
dc.subject.eng Franconian Alb de
dc.subject.eng Harz Mountains de
dc.subject.eng paleoclimate de
dc.subject.eng δ18O/δ13C de
dc.subject.eng stable isotopes de
dc.subject.eng 234U/230Th de
dc.subject.eng TIMS de
dc.subject.eng Zaininger Cave de
dc.subject.eng Hintere Kohlhalden Cave de
dc.subject.eng Baumanns-Cave de
dc.subject.eng Herrmanns-Cave de
dc.subject.eng Mühlbach-Cave de
dc.subject.eng Paleocave Hunas de
dc.subject.eng hendy test de
dc.subject.eng equilibrium conditions de
dc.subject.eng kinetic fractionation de
dc.subject.eng OIS2 de
dc.subject.eng Younger Dryas de
dc.subject.eng Bölling/Alleröd de
dc.subject.eng T1 de
dc.subject.eng Pleistocene de
dc.subject.eng Holocene de
dc.subject.eng 8.2 kyr. de
dc.subject.eng Holocene Climatic Optimum de
dc.subject.bk 38.03 de
dc.subject.bk 38.82 de
dc.subject.bk 38.17 de
dc.subject.bk 38.19 de
dc.subject.bk 38.32 de
dc.identifier.urn urn:nbn:de:gbv:7-webdoc-100-1 de
dc.identifier.purl webdoc-100 de
dc.identifier.ppn 502245832 de

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