DOI: 10.1016/j.gloplacha.2012.04.008
论文题名: Paleomagnetic and chronostratigraphic constraints on the middle to late miocene evolution of the transylvanian basin (Romania): Implications for central paratethys stratigraphy and emplacement of the tisza-dacia plate
作者: De Leeuw A. ; Filipescu S. ; Maţenco L. ; Krijgsman W. ; Kuiper K. ; Stoica M.
刊名: Global and Planetary Change
ISSN: 0921-8340
出版年: 2013
卷: 103, 期: 1 起始页码: 82
结束页码: 98
语种: 英语
英文关键词: 40Ar/39Ar dating
; Chronostratigraphy
; Environmental change
; Magnetostratigraphy
; Miocene
; Paleomagnetism
; Paratethys
; Sedimentary history
; Tectonic rotation
; Transylvanian basin
Scopus关键词: <sup>40</sup>Ar/<sup>39</sup>Ar dating
; Chronostratigraphy
; Environmental change
; Magnetostratigraphy
; Miocene
; Paleomagnetism
; Paratethys
; Tectonic rotations
; Transylvanian basin
; paleomagnetism
; Transylvanian Basin
; Geodynamics
; Geomagnetism
; Sedimentology
; Sediments
; Seismology
; Tectonics
; Stratigraphy
; Stratigraphy
; Geodynamics
; antiform
; argon-argon dating
; Badenian
; basin evolution
; chronostratigraphy
; climate variation
; collision zone
; cyclostratigraphy
; deep water
; emplacement
; endemism
; Oligocene
; paleobiogeography
; paleogeography
; paleomagnetism
; Paratethys
; seismic stratigraphy
; tectonic plate
; tectonic rotation
; Tethys
; tuff
; environmental change
; infill
; magnetostratigraphy
; Miocene
; tectonic evolution
; Carpathians
; Eastern Carpathians
; Mediterranean Sea
; Romania
; Transylvanian Basin
; Orbulina suturalis
; Paratethys
英文摘要: From the Oligocene onwards, the complex tectonic evolution of the Africa-Eurasia collision zone led to paleogeographic and biogeographic differentiation of theMediterranean and Paratethys, two almost land-locked seas, in the area formerly occupied by the western Tethys Ocean. Episodic isolation of the basins triggered strong faunal endemism leading to the introduction of regional stratigraphic stages for the Paratethys. Chronostratigraphic control on the Paratethys stages remains rudimentary compared to the cyclostratigraphically constrained Mediterranean stages. This lack of chronostratigraphic control restricts the insight in the timing of geodynamic, climatic, and paleobiogeographic events and thereby hinders the identification of their causes and effects. In this paper, we here derive better age constraints on the Badenian, Sarmatian and Pannonian Central Paratethys regional stages through integrated 40Ar/39Ar,magnetostratigraphic, and biostratigraphic research in the Transylvanian Basin. The obtained results help to clarify the regionsMiddleMiocene geodynamic and paleobiogeographic evolution. Six new 40Ar/39Ar ages were determined for tuffs intercalating with the generally deep marine basin infill. Together with data fromprevious studies, there is now a total of 9 radio-isotopically dated horizons in the basin. Thesewere traced along seismic lines into a synthetic seismic stratigraphic column in the basin center and serve as first order tie-points to the astronomically tuned Neogene timescale (ATNTS). Paleomagnetically investigated sections were treated similarly and their polarity in general corroborates the 40Ar/39Ar results. The integrated radio-isotopic and magnetostratigraphic results provide an improved high-resolution time-frame for the sedimentary infill of the Transylvanian Basin. Early Badenian deepwater sedimentation is characterized by accumulation of theDej Tuff Complex in response to a period of intensive volcanism, the onset ofwhich is constrained between the first occurrence (FO) of Orbulina suturalis at 14.56 Ma and 14.38±0.06 Ma. During the subsequent Badenian Salinity Crisis (BSC) up to 300 mof salt accumulate in the basin center. The faunal turnover thatmarks the Badenian-Sarmatian Boundary is dated at 12.80±0.05 Ma. A second phase of intense volcanism occurs at 12.4 Maand leads to deposition of themiddle Sarmatian tuff complex (Ghiriş, Hǎdǎreni, Turda and Câmpia Turzii tuffs). Rates of sediment accumulation strongly diminish in the basin center at the onset of the Pannonian stage coincidentwith an approximately 20° CWtectonic rotation of the Tisza-Dacia plate. Concurrent enhanced uplift in the Eastern a'nd Southern Carpathians leads to the isolation of the Central Paratethys and triggers the transition from marine to freshwater conditions. An additional Pannonian to post-Pannonian 6° of CW rotation is related to the creation of antiform geometries in the Eastern Carpathians which are notably larger in the north than in the south. An 8.4 Ma age is determined for the uppermost Pannonian sediments preserved in the central part of the Transylvanian Basin. Two sections belonging to middle Pannonian Zone D, and the lower part of Zone E (Subzone E1) are found to cover the 10.6-9.9 Ma time-interval. © 2012 Elsevier B.V. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84878232815&doi=10.1016%2fj.gloplacha.2012.04.008&partnerID=40&md5=c8595b8fef1c0f269e0f884d24787fb9
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11246
Appears in Collections: 全球变化的国际研究计划
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作者单位: Paleomagnetic Laboratory'Fort Hoofddijk', Utrecht University, Budapestlaan 4, 3584 CD, Utrecht, Netherlands
Recommended Citation:
De Leeuw A.,Filipescu S.,Maţenco L.,et al. Paleomagnetic and chronostratigraphic constraints on the middle to late miocene evolution of the transylvanian basin (Romania): Implications for central paratethys stratigraphy and emplacement of the tisza-dacia plate[J]. Global and Planetary Change,2013-01-01,103(1).