DOI: 10.1016/j.palaeo.2015.09.022
论文题名: The Slanicul de Buzau section, a unit stratotype for the Romanian stage of the Dacian Basin (Plio-Pleistocene, Eastern Paratethys)
作者: Van Baak C.G.C. ; Mandic O. ; Lazar I. ; Stoica M. ; Krijgsman W.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2015
卷: 440 起始页码: 594
结束页码: 613
语种: 英语
英文关键词: Carpathian foredeep
; Magnetostratigraphy
; Mollusks
; Ostracods
; Paratethys
; Plio-Pleistocene
英文摘要: Climatic changes cause large paleoenvironmental responses in semi-isolated basins. We analyze here the sedimentary successions of the Dacian Basin (Romania) to evaluate Late Pliocene and Early Pleistocene paleoenvironmental changes through macro- and micropaleontology. These changes are dated by creating a magnetostratigraphic time frame for two long and continuous sections with a combined total thickness of 2850 m. The studied succession spans the time interval between 4.7. Ma and 1.6. Ma and records both the mid Pliocene Warm Period (3.3-2.9. Ma) and the onset of large-scale glaciations on the Northern Hemisphere (~. 2.7. Ma). Due to progressive basin infill, the paleoenvironment changes from brackish to fluvio-lacustrine with a major extinction event of lymnocardiine bivalves around 4.15. Ma. Rich and dominantly freshwater mollusk and ostracod faunas develop from this moment onwards. Between 3.2. Ma and 2.95. Ma, the reappearance of lymnocardiines identifies a short moment of higher salinities, the previously identified Plescoi event. In time, this correlates closely to the warmest interval of the Pliocene, and is therefore most likely related to connectivity to the Black Sea during maximum sea-level. After the climatic optimum, deposition continues in a fluvio-deltaic setting with only scarce finds of fauna. Increasing amounts of coarse grained fluvial sediments show a close relationship with the progressive cooling during the Pleistocene. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68732
Appears in Collections: 过去全球变化的重建
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作者单位: Palaeomagnetic Laboratory 'Fort Hoofddijk', Utrecht University, Budapestlaan 4, Utrecht, Netherlands; Department of Geology and Palaeontology Natural History Museum Vienna, Burgring 7, Wien, Austria; Department of Geology, Faculty of Geology and Geophysics, Bucharest University, Bălcescu Bd. 1, Bucharest, Romania
Recommended Citation:
Van Baak C.G.C.,Mandic O.,Lazar I.,et al. The Slanicul de Buzau section, a unit stratotype for the Romanian stage of the Dacian Basin (Plio-Pleistocene, Eastern Paratethys)[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2015-01-01,440