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Provenance analysis as a key to orogenic exhumation: a case study from the East Carpathians (Romania)
Author(s) -
Panaiotu Cristina E.,
Vasiliev Iuliana,
Panaiotu Cristian G.,
Krijgsman Wout,
Langereis Cor G.
Publication year - 2007
Publication title -
terra nova
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.353
H-Index - 89
eISSN - 1365-3121
pISSN - 0954-4879
DOI - 10.1111/j.1365-3121.2006.00726.x
Subject(s) - provenance , geology , nappe , petrography , structural basin , geochemistry , volcanic arc , erosion , paleontology , geomorphology , tectonics , subduction
Provenance analysis of the sediments from foredeep basins is crucial in understanding the contemporaneous orogenic exhumation processes. We report in this paper complex sediment provenance analysis using sandstone petrography and mudstone geochemistry, combined with magnetic susceptibility of the Upper Miocene to Pliocene deposits from Focşani foredeep basin (Romania). Data show a change of source area between 5 and 6 Ma, from an active volcanic arc towards a recycled orogenic belt, concurrent with an important increase of accumulation rate. This change was triggered by exhumation and erosion of the outer nappes from East Carpathians.