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Tectonics and sedimentation during convergence of the ALCAPA and Tisza-Dacia continental blocks : the Pienide nappe emplacement and its foredeep (N. Romania)

Tischler, M. and Matenco, L. and Filipescu, S. and Groeger, H. R. and Wetzel, A. and Fuegenschuh, B.. (2008) Tectonics and sedimentation during convergence of the ALCAPA and Tisza-Dacia continental blocks : the Pienide nappe emplacement and its foredeep (N. Romania). Geological Society special publication, No. 298. pp. 317-334.

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Official URL: http://edoc.unibas.ch/dok/A5250553

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Abstract

The juxtaposition of the ALCAPA and TiszaDacia continental blocks, although one of the key issues in the evolution of the Carpathians, is not well known in terms of associated effects on the sedimentary systems during frontal foreland development. Most of the contact between ALCAPA and TiszaDacia being covered by post-tectonic deposits, these effects can best be observed in northern Romania. Sedimentological data on facies, palaeocurrents and modal composition of sandstones combined with micropalaeontological data and 2D wellcalibrated seismic lines constrain the tectonic history of the contact zone between ALCAPA and TiszaDacia. Pervasive deposition of sand-dominated siliciclastics beginning in late Early Oligocene (Late Rupelian) times is interpreted to reflect the onset of convergence between ALCAPA and TiszaDacia in the study area. The depocentre of coarse siliciclastic material migrates southward, finally forming a southeastward-thinning clastic wedge in the Transylvanian Basin. This Burdigalian-age clastic wedge is interpreted as fill of a flexural foreland basin that formed in response to the coeval thrusting of parts of ALCAPA (Pienides) over TiszaDacia. A shift from an EW to SENW striking basin axis during Oligocene times towards a WSW ENE oriented basin axis during Burdigalian times is interpreted as a result of clockwise rotation of TiszaDacia during basin formation.
Faculties and Departments:05 Faculty of Science > Departement Umweltwissenschaften > Geologie-Paläontologie > Tektonik (nn)
UniBasel Contributors:Tischler, Matthias
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Note:Also published in: Tectonic aspects of the Alpine-Dinaride-Carpathian system. - London : Geological Society, 2008. - S. 317-334 -- Publication type according to Uni Basel Research Database: Journal article
Last Modified:07 Aug 2015 12:05
Deposited On:22 Mar 2012 14:15

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