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dc.contributor.authorSchuller, V.
dc.contributor.authorFrisch, W.
dc.contributor.authorDanisik, Martin
dc.contributor.authorDunkl, I.
dc.contributor.authorMelinte, M.
dc.date.accessioned2017-01-30T11:25:11Z
dc.date.available2017-01-30T11:25:11Z
dc.date.created2010-05-13T20:02:43Z
dc.date.issued2009
dc.identifier.citationSchuller, Volker and Frisch, Wolfgang and Danisik, Martin and Dunkl, Istvan and Melinte, Mihaela. 2009. Upper Cretaceous Gosau deposits of the Apuseni Mountains (Romania) - similarities and differences to the Eastern Alps. Austrian Journal of Earth Sciences. 102: pp. 133-145.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/11517
dc.description.abstract

The Apuseni Mountains were formed during Late Cretaceous convergence between the Tisia and the Dacia microplates as part of the Alpine orogen. The mountain range comprises a sedimentary succession similar to the Gosau Group of the Eastern Alps. This work focuses on the sedimentological and geodynamic evolution of the Gosau basin of the Apuseni Mts. and attempts a direct comparison to the relatively well studied Gosau Group deposits of the Eastern Alps. By analyzing the Upper Cretaceous Gosau sediments and the surrounding geological units, we were able to add critical evidence for reconstructing the Late Mesozoic to Paleogene geodynamic evolution of the Apuseni Mountains. Nannoplankton investigations show that Gosau sedimentation started diachronously after Late Turonian times. The burial history indicates low subsidence rates during deposition of the terrestrial and shallow marine Lower Gosau Subgroup and increased subsidence rates during the period of deep marine Upper Gosau Subgroup sedimentation.The Gosau Group of the Apuseni Mountains was deposited in a forearc basin supplied with sedimentary material from an obducted forearc region and the crystalline hinterland, as reflected by heavy mineral and paleocurrent analysis. Zircon fission track age populations show no fluctuation of exhumation rates in the surrounding geological units, which served as source areas for the detrital material, whereas increased exhumation at the K/Pg boundary can be proven by thermal modeling on apatite fission track data. Synchronously to the Gosau sedimentation, deep marine turbidites were deposited in the deep-sea trench basin formed by the subduction of the Transylvanian Ocean. The similarities to the Gosau occurrences of the Eastern Alps lead to direct correlation with the Alpine paleogeographic evolution and to the assumption that a continuous ocean basin (South Penninic - Transylvanian Ocean Basin) was consumed until Late Cretaceous times.

dc.publisherAustrian Geological Society
dc.titleUpper Cretaceous Gosau deposits of the Apuseni Mountains (Romania) - similarities and differences to the Eastern Alps
dc.typeJournal Article
dcterms.source.volume102
dcterms.source.startPage133
dcterms.source.endPage145
dcterms.source.issn2072-7151
dcterms.source.titleAustrian Journal of Earth Sciences
curtin.departmentJohn de Laeter Centre for Mass Spectrometry (COE)
curtin.accessStatusOpen access
curtin.facultyJohn De Laeter Centre For Mass Spectrometry (JdL
curtin.facultyFaculty of Science and Engineering


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