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首页> 外文期刊>Global and planetary change >The Middle-Upper Pleistocene Fronte Section (Taranto, Italy): An exceptionally preserved marine record of the Last Interglacial
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The Middle-Upper Pleistocene Fronte Section (Taranto, Italy): An exceptionally preserved marine record of the Last Interglacial

机译：中上更新世锋面部分（意大利塔兰托）：上一次冰间期的保存完好的海洋记录

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The Fronte Section, a well-exposed stratigraphic succession from southern Italy (Taranto area), provides an uninterrupted marine sedimentary record of MIS 5e. At this location, a highly expanded (8.5 m thick) stratigraphic succession, unconformably overlying Middle Pleistocene marine clay deposits, provides evidence for sea-level fluctuations during the Last Interglacial. An integrated study of Fronte Section, including fades analysis, detailed macrofaunal and meiofaunal characterization, and sequence stratigraphy, is presented. The occurrence of Persististrombus laws (=Strombus bubonius) and other warm-water indicators ("Senegalaise" - "Senegalian" - guests of Gignoux, 1913), together with the presence of the dinocyst Polysphaeridium zoharyi and ten U-series dates on Cladocora caespitosa samples, permit an unequivocal MIS 5e age assignment to the upper part of the study succession. Above a stratigraphic unconformity marked by the boring coastal-lagoonal bivalve Pholas dactylus, the MIS 5e succession displays a first transgressive suite of brackish to shallow-marine deposits. These latter include highly fossiliferous muds rich in C. caespitosa, overlain by a fossil-rich calcarenite, 2 m-thick, yielding warm-water "Senegalian" mollusks. Above this prominent stratigraphic marker (regionally called panchina), which is interpreted to represent a short-lived phase of sea-level stillstand or gentle fall during MIS 5e, renewed transgression took place, leading to the accumulation of middle-outer shelf muds, about 5 m thick. The maximum flooding zone is clearly identified on the basis of the turnaround from a deepening-up to a shallowing-up trend. The upper part of Fronte Section records a second fossil-rich, sublittoral calcarenite containing warm-water mollusks, which is interpreted to reflect the subsequent phase of sea-level highstand, likely correlative with the MIS 5e plateau. (C) 2014 Elsevier B.V. All rights reserved.
机译：前沿部分是来自意大利南部（塔兰托地区）的暴露地层序列，提供了MIS 5e的不间断海洋沉积记录。在这个位置，高度扩展（8.5 m厚）的地层演替，不整合地覆盖了中更新世的海相粘土沉积物，为上一次冰间期的海平面波动提供了证据。提出了一个前沿研究的综合研究，包括衰减分析，详细的宏观动物和半月形特征以及层序地层学。 Persististrombus定律（= Strombus bubonius）和其他温水指示符的出现（“ Senegalaise”-“ Senegalian”-Gignoux的来宾，1913年），以及在Cladocora caespitosa上存在的囊肿多孢菌zoharyi和十个U系列日期样本，可以明确地将MIS 5e年龄分配给研究序列的上部。在以无聊的沿海-泻湖双壳类辉石为特征的地层不整合面之上，MIS 5e演替显示了第一个从微咸到浅海沉积的海侵层。后者包括富含化石蜡的高度化石的泥浆，上面覆盖着2 m厚的富含化石的钙钙石，产生温水的“塞内加尔”软体动物。在这个著名的地层​​标志（区域上称为panchina）之上，这被解释为是MIS 5e期间海平面静止和短暂下降的短暂阶段，发生了新的海侵，导致了中外架子泥浆的堆积。 5 m厚。根据从深化到浅化趋势的转变，可以清楚地确定最大洪泛区。前沿剖面的上部记录了第二个富含化石的，沿沿海亚钙钙石，其中含有温水软体动物，这被解释为反映了随后的海平面高位阶段，可能与MIS 5e高原有关。 （C）2014 Elsevier B.V.保留所有权利。

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