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首页> 外文期刊>Neues Jahrbuch fur Geologie und Palaontologie. Abhandlungen >Ammonite biostratigraphy as a tool for dating Upper Jurassic lithographic limestones from South Germany first results and open questions
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Ammonite biostratigraphy as a tool for dating Upper Jurassic lithographic limestones from South Germany first results and open questions

机译：菊粉生物地层学可作为对南德上侏罗统平版石灰岩进行定年的工具

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摘要

Although the Upper Jurassic lithographic limestones of Franconia and Swabia belong to the worldwide most famous fossil sites ('Fossil Lagerstatten'), a detailed biostratigraphical analysis was missing. Often the various fossiliferous localities, distributed over an area of several hundreds of square kilometres, were summarized as 'Solnhofen', and an early Tithonian age was traditionally assumed for most of them, with few exceptions. This is the first comprehensive attempt for a high-resolution biostratigraphy based on ammonite biohorizons. The different ages of laminated limestones obtained by this method, ranging from the Kimmeridgian Pseudomutabilis Zone to the Tithonian Ciliata Zone - a duration of ca. 4 Ma - provide a basis for future high time-resolution correlations, environmental reconstructions, and deposition-modelling.
机译：尽管弗朗肯尼亚州和斯瓦比亚州的上侏罗纪石印石灰岩属于世界上最著名的化石遗址（化石Lagerstatten），但缺少详细的生物地层学分析。通常，分布在数百平方公里面积上的各种化石地区被概括为“ Solnhofen”，传统上假定其中大多数是早期的泰通时代，除了少数例外。这是基于亚am石生物地平线的高分辨率生物地层学的首次全面尝试。通过这种方法获得的层状石灰岩的不同年龄，从Kimmeridgian Pseudomutabilis带到Tithonian纤毛带带-持续时间大约为10年。 4 Ma-为将来的高时间分辨率相关性，环境重建和沉积建模提供基础。

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