Universität zu Köln

Sant, Karin, Kuiper, Klaudia F., Rybar, Samuel, Grunert, Patrick, Harzhauser, Mathias, Mandic, Oleg, Jamrich, Michal, Sarinova, Katarina, Hudackova, Natalia and Krijgsman, Wout (2020). Ar-40/Ar-39 geochronology using high sensitivity mass spectrometry: Examples from middle Miocene horizons of the Central Paratethys. Geol. Carpath., 71 (2). S. 166 - 199. BRATISLAVA: SLOVAK ACAD SCIENCES GEOLOGICAL INST. ISSN 1336-8052

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Abstract

Ar-40/Ar-39 radio-isotopic dating of volcanic tuffs intercalated in sediments can provide high accuracy age control on the deposition of sedimentary rocks. State-of-the-art mass spectrometers such as the ARGUS VI are able to acquire highly precise ages for relatively small single grains (similar to 90-250 mu m for Miocene samples). Single grain measurement can provide insight into the sometimes complex age distributions within volcanic tuff's. The results show that Ar-40/Ar-39 ages based on multiple grain fusions will not necessarily reflect eruption ages, which can lead to (slight) overestimation of the depositional age. The paper compares multiple and single grain data from different Miocene tuffs in the Central Paratethys, which plays an important role in the establishment of a geological time frame for this area. The examples come from three middle Miocene tuff horizons that span from the Badenian transgression to the Badenian-Sarmatian Extinction Event. The new ages obtained from the Quellgraben section in the Styrian Basin (14.31 +/- 0.27 Ma and 14.03 +/- 0.04 Ma) are much younger than the previous dating and together with the new data from the Bernhardsthal-4 well, Vienna Basin (15.12 +/- 0.19 Ma) indicate, that the Badenian (Langhian) marine flooding did not reach this area before 15.2 Ma. The new weighted mean age of 12.56 +/- 0.10 Ma from the Kamenica nad IIronom section in the Danube Basin dates the transition from marine to terrestrial setting, which is possibly connected with a sea level lowstand at the beginning of the Sarmatian.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Sant, Karin UNSPECIFIED UNSPECIFIED UNSPECIFIED Kuiper, Klaudia F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rybar, Samuel UNSPECIFIED UNSPECIFIED UNSPECIFIED Grunert, Patrick UNSPECIFIED UNSPECIFIED UNSPECIFIED Harzhauser, Mathias UNSPECIFIED UNSPECIFIED UNSPECIFIED Mandic, Oleg UNSPECIFIED UNSPECIFIED UNSPECIFIED Jamrich, Michal UNSPECIFIED UNSPECIFIED UNSPECIFIED Sarinova, Katarina UNSPECIFIED UNSPECIFIED UNSPECIFIED Hudackova, Natalia UNSPECIFIED UNSPECIFIED UNSPECIFIED Krijgsman, Wout UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-337864
DOI:	10.31577/GeolCarp.71.2.5
Journal or Publication Title:	Geol. Carpath.
Volume:	71
Number:	2
Page Range:	S. 166 - 199
Date:	2020
Publisher:	SLOVAK ACAD SCIENCES GEOLOGICAL INST
Place of Publication:	BRATISLAVA
ISSN:	1336-8052
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language CARPATHIAN-PANNONIAN REGION; VIENNA BASIN; TRANSYLVANIAN BASIN; DECAY CONSTANTS; STYRIAN BASIN; NEOGENE; STRATIGRAPHY; EVOLUTION; PALEOGEOGRAPHY; AGE Multiple languages Geosciences, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/33786