The Late Cretaceous transgression in the Saxonian Cretaceous Basin (Germany): old story, new data and novel findings

IF 1.5 3区 地球科学 Q3 GEOSCIENCES, MULTIDISCIPLINARY
M. Wilmsen, B. Niebuhr, M. Fengler, T. Püttmann, Michaela Berensmeier
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引用次数: 9

Abstract

Meißen, Dresden, Pirna and Bad Schandau is characterised by widespread strata of Late Cretaceous age, constituting the Cenomanian–Coniacian Elbtal Group. Current consensus on the course of the early Late Cretaceous transgression is that a first ingression from the northwest took place in the late Early Cenomanian (Meißen Formation). In the Middle Cenomanian, contemporaneous onlap is allegedly only documented by the fluvial Niederschöna Formation while marine strata are completely absent (see also Hancock 2004, p. 617). In the Late Cenomanian, marine onlap continued with two pulses of sea-level rise, i.e. in the C. naviculare and M. geslinianum ammonite zones, respectively (e.g. Voigt 1994, Tröger 2003). However, new observations such as the presence of a Middle Cenomanian index ammonite in the Meißen Formation (Wilmsen & Nagm 2014) and the record of other presumably marine Middle Cenomanian strata (Tröger 2017) cast doubt on these interpretations. Here, we present new integrated stratigraphic and sedimentological data on the timing and extent of the marine inundation of the Saxonian part of the Saxo-Bohemian Cretaceous Basin from the Meißen–Niederau area, including the first evidence of the Praeactinocamax primus Event for Saxony. Furthermore, the results of this study require modifications of the current lithostratigraphy of the Elbtal Group.
德国萨克森-白垩纪盆地晚白垩世海侵:古老的故事、新的数据和新的发现
Meißen、Dresden、Pirna和Bad Schandau的特征是晚白垩世的广泛地层,构成Cenomanian-Coniacian-Elbtal群。目前关于晚白垩世早期海侵过程的共识是,西北方向的第一次海侵发生在早Cenomanian晚期(Meißen组)。在中Cenomanian,据称只有Niederschöna河地层记录了同生上盖层,而海洋地层完全不存在(另见Hancock 2004,第617页)。在Cenomanian晚期,海洋上层继续出现两次海平面上升脉冲,即分别在C.naviculale和M.geslinianum菊石带(例如Voigt 1994,Tröger 2003)。然而,新的观察结果,如Meißen组中存在中Cenomanian指数菊石(Wilmsen&Nagm,2014年)和其他可能是海相中Cenomasian地层的记录(Tröger,2017年),使人们对这些解释产生了怀疑。在这里,我们提供了关于梅恩-尼德劳地区萨克森-波希米亚白垩纪盆地萨克森部分海洋淹没的时间和程度的新的综合地层和沉积学数据,包括萨克森Praeactinocamax primus事件的第一个证据。此外,这项研究的结果需要对Elbtal群目前的岩石地层学进行修改。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Bulletin of Geosciences
Bulletin of Geosciences 地学-地球科学综合
CiteScore
3.10
自引率
5.30%
发文量
18
审稿时长
>12 weeks
期刊介绍: The Bulletin of Geosciences is an international journal publishing original research papers, review articles, and short contributions concerning palaeoenvironmental geology, including palaeontology, stratigraphy, sedimentology, palaeogeography, palaeoecology, palaeoclimatology, geochemistry, mineralogy, geophysics, and related fields. All papers are subject to international peer review, and acceptance is based on quality alone.
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