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首页> 外文期刊>Rivista Italiana di Paleontologia e Stratigrafia >Integrated stratigraphy of middle-late miocene synorogenic deposits of the eastern southern apennine chain: The san bartolomeo flysch
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Integrated stratigraphy of middle-late miocene synorogenic deposits of the eastern southern apennine chain: The san bartolomeo flysch

机译：南部亚平宁链中晚中新世同生统沉积物的综合地层：圣巴托洛米奥·弗里施

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摘要

The present paper deals with the stratigraphic and biostratigraphic study of the middle-late Miocene thrust-top basin deposits of the San Bartolomeo Flysch, exposed north of Matese mountains and analysed during the geological survey of the sheet N° 405 Campobasso of the new Geological Map of Italy, 1:50.000 scale. The integrated study of calcareous nannofossils and planktonic foraminifera, based on the semi-quantitative distribution range of index species, revealed the presence of age-diagnostic assemblages which are comparable with those of different middle-late Miocene deep-marine sedimentary settings of the Mediterranean Basin. The biostratigraphic dataset suggests an early Serravallian - early middle Tortonian age. In terms of calcareous nannofossil biostratigraphy, the studied succession falls between the Last Occurrences of Sphenolithus heteromorphus and the First Occurrence of Discoaster bellus gr., corresponding to the MNN6 - MNN8 zone interval. In terms of planktonic foraminiferal biostratigraphy the studied sediments fall between the Last Occurrence of Globorotalia peripheroronda and the First Regular Occurrence of Neogloboquadrina acostaensis, corresponding to the MM6 p.p. MMi1O p.p. zone interval. This study documents the applicability of the recent Mediterranean middle-late Miocene biozonations for the biostratigraphic study of siliciclastic synorogenic sediments, and challenges the most recent studies that dated the San Bartolomeo Flysch to the late Tortonian-early Messinian.
机译：本文研究了位于Matese山北部的San Bartolomeo Flysch中新世中新世逆冲顶盆沉积物的地层学和生物地层学研究，并在新地质图的N°405 Campobasso片的地质调查中进行了分析意大利的比例为1：50.000。根据指标物种的半定量分布范围，对钙质纳米化石和浮游有孔虫进行了综合研究，发现存在与地中海盆地中晚期中新世深海沉积环境相当的年龄诊断组合。 。生物地层数据集显示了塞拉瓦利亚早期-托土尔中期中期。在钙质纳米化石生物地层学方面，研究的演替介于Sphenolithus heteromorphus的最后一次发生和Discoaster bellus gr。的第一次发生之间，对应于MNN6-MNN8区带间隔。在浮游有孔虫生物地层学方面，研究的沉积物介于Globorotalia peripheroronda的最后一次发生与Neocostoboquadrina acostaensis的第一次常规发生之间，对应于MM6 p.p. MMi10 p.p.区域间隔。这项研究记录了最近的地中海中晚期中新世生物带在硅质碎屑成因沉积物生物地层学研究中的适用性，并挑战了将圣巴托洛梅奥·弗利施（San Bartolomeo Flysch）追溯到Tortonian-Messinian晚期的最新研究。

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