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首页> 外文期刊>Stratigraphy >Eocene stratigraphy of the Wadi Al-Hitan World Heritage Site and adjacent areas (Fayum, Egypt)
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Eocene stratigraphy of the Wadi Al-Hitan World Heritage Site and adjacent areas (Fayum, Egypt)

机译：瓦迪阿尔希坦世界遗产及附近地区（埃及法姆）的始新世地层

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摘要

The middle and late Eocene stratigraphy and depositional environments of the Wadi Al-Hitan area, Egypt, are described in detail for the first time. Complex facies relationships have been resolved by detailed logging of key sections over a 300 sq. km area and by biostratigraphic analysis. Mid and outer neritic marls and argillaceous limestones of the lower Gehannam Formation are overlain proximally by a major coastal sand body complex, the Birket Qarun Formation, which (as preserved) was deposited almost entirely on the lower shoreface. The sands of the Birket Qarun Formation prograded progressively northwards in four phases, with individual sand bodies separated by transgressive wedges of inner to mid-neritic silts and clays (the upper Gehannam Formation and the newly named Garet El-Naqb Formation). The final phase of progradation was terminated by the transgressive lower Qasr El-Sagha Formation.
机译：首次详细描述了埃及Wadi Al-Hitan地区的中，始新世地层和沉积环境。通过详细记录300平方公里区域内的关键断面并通过生物地层分析，解决了复杂的相关系。盖汉南组下部的中，外针状泥灰岩和泥质灰岩在近侧覆盖有主要的沿海砂体复合体-比克盖伦组（保存下来），几乎全部沉积在下部岸面上。 Birket Qarun组的砂体分四个阶段向北逐渐发展，单个砂体被内部到中部的粉砂和粘土（上部的Gehannam组和新命名的Garet El-Naqb组）的海侵楔形隔开。渐进的最后阶段由海侵下Qasr El-Sagha组终止。

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