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Early and middle Miocene paleobathymetry of the Vienna Basin (Austria)
Marine and Petroleum Geology ( IF 4.2 ) Pub Date : 2021-06-16 , DOI: 10.1016/j.marpetgeo.2021.105187
Matthias Kranner , Mathias Harzhauser , Oleg Mandic , Philipp Strauss , Wolfgang Siedl , Werner E. Piller

The Vienna Basin (VB) originated during the early Miocene and represents one of the largest onshore oil and gas field in Europe. The VB is composed of several horst and graben structures forming different subbasins, each with its own geodynamic evolution and deviating paleobathymetric developments during the Miocene. We present an analysis of water depth evolution along a NE-SW transect by applying a transfer function for benthic foraminifers. We document dramatic changes in the depth profile through time, which coincide with shifts of prevailing tectonic regimes. Bathyal conditions were established during the early Miocene piggy-back stage and the early middle Miocene extensional phase. A clear shallowing trend from upper bathyal to inner neritic conditions occurred during the middle Miocene extensional tectonic phase.

All lowstand systems of relative sea level in the VB coincide with global Mi-events. The observed maxima of the relative sea level in the VB are vaguely in phase with the global record from the Ottnangian (late early Miocene) to the middle Badenian (middle Miocene) but exceed the range of global sea level rise by three to four times, suggesting a strong tectonic amplification. Fluctuations of the relative sea level during the late Badenian and Sarmatian (Serravallian, middle Miocene) range well within the global signal, documenting ceasing influence of tectonics.



中文翻译:

维也纳盆地早中新世古水深测量(奥地利)

维也纳盆地 (VB) 起源于中新世早期,是欧洲最大的陆上油气田之一。VB 由几个地堑构造组成,形成不同的子盆地,每个盆地都有自己的地球动力学演化和​​中新世期间偏离的古水深发展。我们通过应用底栖有孔虫的传递函数,对沿 NE-SW 断面的水深演化进行了分析。我们记录了深度剖面随时间的巨大变化,这与主要构造体制的变化相吻合。在早中新世背负阶段和早中新世伸展阶段建立了深海条件。中中新世伸展构造阶段出现明显的从上深海向内浅海条件变浅的趋势。

VB 中所有相对海平面的低位系统都与全球 Mi 事件重合。观测到的 VB 相对海平面的最大值与从奥特南阶(中新世晚期)到巴登阶中期(中新世)的全球记录模糊地同相,但超过了全球海平面上升幅度的三到四倍,暗示了强烈的构造放大。晚巴登阶和萨尔马阶(塞拉瓦利亚,中中新世)期间相对海平面的波动在全球信号范围内,记录了构造的停止影响。

更新日期:2021-06-30
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