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标题：SMARANDA TOMA, LUMINITA SAFTOIU - Landforms of Romania – The system of geochronologic evolution
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作者：MIHAI IELENICZ ; SMARANDA TOMA ; LUMINI.A S.FTOIU 等
期刊名称：Annals of the University of Bucharest : Geography Series
印刷版ISSN：1013-4115
电子版ISSN：2247-238X
出版年度：2014
出版社：University of Bucharest
摘要：The corroborationof geomorphological, tectonic and paleoclimatic data led to a geomorphological system with two stages and subdivisions. The pre-Carpathian stage (Proterozoic-Lower Mesozoic, belonging to Vorland) is characterized by: completing the platform units (E, S) and the Paleozoic rigid geotectonic system of Northen Dobruja; levelling stages resulting in pediplains which were subsequently fragmented and fossilized almost entirely (Central and Northen Dobruja sectors). The Carpathian stage is defined by: completing the Carpathian orogenic system (between Jurassic and Quaternary) in labile edge sectors of the Eastern European plate in which the evolution of some regional rifts (in Jurassic – Cretaceous) and the moving of some rigid blocks (Moessic, Pannonian and Transylvanian) created sequentially tectonic basins where the accumulated materials were folded, faulted and overthrusted, or mountain systems resulted by lifting (the upper Cretaceous and Miocene); creating tectonic depressions filled with sedimentary formations; reactivating some deep fractures accompanied by volcanic eruption phases and creating a specific relief; the tectonic movements in the upper Pliocene – Quaternary raised differently all geographic units representing the current orostructural system by Carpathians's emersion and join to the adjacent regions; the climate change from savanna (Paleogene) to subtropical (Mio – Pliocene), then temperate and glacial (late Pleistocene) and so on, led to a succession of morphogenetic systems that have generated landforms among which the most representative were preserved mainly as steps, erosion surfaces areas and levels, or terraces from many morphogenetic phases.
关键词：leveled surfaces; erosion levels; pediplains; terraces; morphogenetic stages; ; geochronologic system