Estuarine sedimentation in the Stuttgart Formation (Carnian, Late Triassic), South Germany

Uma KantShukla; Gerhard H. Bachmann

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Estuarine sedimentation in the Stuttgart Formation (Carnian, Late Triassic), South Germany

机译：德国南部斯图加特组（三叠纪晚期的卡尼安）河口沉积

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The Stuttgart Formation (Schilfsandstein, Middle Keuper) near Iphofen (Unterfranken/ Lower Franconia) is some 15 m thick and consists of fluvial and estuarine sediments, which are unconformably entrenched in the underlying shales of the Grabfeld Formation. An approximately 8 m thick sand body in the lower part exhibits bipolar herringbone cross-bedding, sigmoidal bedding with double mudstone drapes, tidal bundles and polymodal paleocurrents. These structures suggest intertidal bars and tidal channels dominated by microtidal activity towards an estuary mouth beyond the zone of turbidity maxima. Appreciable wave effect and wave induced currents were instrumental for sedimentation, too. The succession represents a transgressive systems tract generated during relative sea-level rise in a drowned river valley system.

机译：Iphofen（下弗兰肯/下弗兰肯行政区）附近的斯图加特组（Schilfsandstein，中库珀尔）厚约15 m，由河流和河口沉积物组成，这些沉积物不整合地根深蒂固在Grabfeld组的下页岩中。下部约8 m厚的砂体表现出双极人字形交叉层理，带双泥岩垂褶的S形层理，潮汐束和多峰古流。这些结构表明潮间带和潮汐通道以微潮活动为主，朝向最大浊度区以外的河口。明显的波浪效应和波浪感应电流也有助于沉积。演替代表在淹没的河谷系统中相对海平面上升期间产生的海侵系统道。

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《Neues Jahrbuch fur Geologie und Palaontologie. Abhandlungen》 |2007年第3期|共19页
作者
Uma KantShukla; Gerhard H. Bachmann;
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正文语种 eng
中图分类地质学;
关键词
Stuttgart Formation; Schilfsandstein; Middle Keuper; Carnian; South Germany; fluvial; estuarine; tidal; incised valley;

机译：斯图加特组;希尔夫桑德斯坦;中库珀尔;卡尼安;南德;河流;河口;潮汐;切谷;

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1. Estuarine sedimentation in the Stuttgart Formation (Carnian, Late Triassic), South Germany [J] . Uma KantShukla, Gerhard H. Bachmann Neues Jahrbuch fur Geologie und Palaontologie. Abhandlungen . 2007,第3期

机译：德国南部斯图加特组（三叠纪晚期的卡尼安）河口沉积
2. The first fossil limuloid remain from the Stuttgart Formation (Schilfsandstein, Keuper, Karnian, Late Triassic) of Baden-Wurttemberg, southern Germany [J] . Seegis Dieter Neues Jahrbuch fur Geologie und Palaontologie. Abhandlungen . 2014,第2a3期

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3. Tethyan carbonate platform transformations during the Early Jurassic (Sinemurian-Pliensbachian, Southern Alps): Comparison with the Late Triassic Carnian Pluvial Episode [J] . Franceschi Marco, Dal Corso Jacopo, Cobianchi Miriam, Geological Society of America Bulletin . 2019,第7a8期

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4. Sulphate Reduction and ~(34)S/~(32)S Effects Related to the Formation of Anoxic Sediment Surfaces in Tidal Sand Flats of the German Wadden Sea (Southern North Sea) [C] . M.E.Bottcher, B.Oelschlager, T.Hopner, International symposium on isotope techniques in the study of past and current environmental changes in the hydrosphere and the atmosphere . 1998

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5. The microvertebrate record of the upper Triassic lower Chinle Group (Carnian), southwestern United States and the early evolution of dinosaurs. [D] . Heckert, Andrew B. 2001

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Estuarine sedimentation in the Stuttgart Formation (Carnian, Late Triassic), South Germany

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