CYCLIC TRANSGRESSIVE AND REGRESSIVE SEQUENCES DURING CRETACEOUS TIME, NORTHERN ZELTEN PLATFORM, SIRT BASIN, LIBYA
作者: Senusi M. HARSHA
刊名: Journal of Engineering, Science & Technology, 2010, Vol.25 (4)
来源数据库: Selcuk University Journal of Engineering, Science and Technology
关键词: SequenceBahiSirt ve KalashSirtLibya.
原始语种摘要: Two marines transgressive and regressive cycles are recognized during the Cretaceous time; one is represented during Early Cretaceous, when the Sirt area was still an arch. In this cycle, the sedimentation had only taken place on the line base of the arch. The Jurassic sediments partially transgressed the arch but had their depositional edge on the flank of the arch. The other cycle is represented after the northern Tibesti‐Sirt uplift collapsed in the beginning of the Early Upper Cretaceous and during the Upper Cretaceous (Campanian) time. The Maestrichtian Sea encroached from the North and further to design the first flooding surface in the area. Thick of dark grey shale (Sirt Shale) followed by deposition of shallowing upward regressive carbonate of the Kalash Formation were deposited...
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关键词翻译
关键词翻译
  • Cretaceous 白垩纪
  • Jurassic 侏罗纪
  • Ordovician 奥陶纪的
  • upward 向上的
  • depositional 沉积作用的
  • shale 页岩
  • regressive 退化的
  • formations 社区
  • collapsed 暴跌
  • Upper 上方