The Late Aalenian Polyplocussandstein Formation in SE Lower Saxony, Germany: Meandering distributary and crevasse splay sedimentation on a lower deltaic plain
作者: Jens ZimmermannMatthias FranzMarkus Wolfgramm
刊名: Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen, 2014, Vol.271 (1), pp.69-94
来源数据库: Schweizerbart Journal
DOI: 10.1127/0077-7749/2014/0378
关键词: central european basinchute channelfacies analysislate aalenianlower delta plainmeandering distributary channelpoint bar reactivationpoint bar sheetpolyplocussandstein formationsheet sandstone
英文摘要: The Late Aalenian (earliest Middle Jurassic) Polyplocussandstein Formation in the vicinity of Wolfsburg (SE Lower Saxony, Germany) was deposited on the progradational lower delta plain of a large fluvial-dominated delta system. Detailed lithofacies analyses on several outcrops pointto five associations of eight lithofacies types: i) point bar sheets, ii) chute channels, iii) natural levees, iv) crevasse splay sheet sandstones and v) interdistributary bays and, combined with published well data, enable a more detailed palaeogeographic reconstruction than previously available.Palaeohydraulic analysis on lateral shifting point bar sheets of a subsidiary distributary channel enable the reconstruction of an up to 45 m wide and 4 m deep meandering channel of high sinuosity ( P 1.8) and mean...
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关键词翻译
关键词翻译
  • 下部的 降下
  • distributary 支流分流
  • deltaic 三角形的
  • crevasse 冰隙
  • Germany 德联邦德国
  • sedimentation 沉积酌
  • plain 平原
  • lower 降下
  • Lower 降下
  • splay 斜面