Stable isotope investigations on speleothems from different cave systems in Germany.

Nordhoff, Peter

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.identifier.uri	http://dx.doi.org/10.53846/goediss-3575
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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