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首页> 外文期刊>Palaeogeography, Palaeoclimatology, Palaeoecology: An International Journal for the Geo-Sciences >The Chinese Pompeii? Death and destruction of dinosaurs in the Early Cretaceous of Lujiatun, NE China
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The Chinese Pompeii? Death and destruction of dinosaurs in the Early Cretaceous of Lujiatun, NE China

机译：中国庞贝城？中国东北陆家屯早白垩世恐龙的死亡与破坏

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摘要

The Lujiatun Unit (Yixian Formation) yields some of the most spectacular vertebrate fossils of the Jehol Group (Lower Cretaceous) of NE China. Specimens are preserved both articulated and three-dimensional, unlike the majority of Jehol fossils, which are near two-dimensional compression fossils. The site has been referred to as the 'Chinese Pompeii' because the dinosaurs and other animals were assumed to have been killed and buried by hot, airborne volcanic debris and ash in a single event; this has yet to be confirmed. Field and laboratory evidence for the sedimentological context of the fossils from the Lujiatun Unit is described in detail, and used to assess whether the fossil remains correspond to a single depositional event and whether this event was the direct result of volcanic activity. Fossils of the Lujiatun Unit occur in several horizons of volcaniclastic sediments that represent multiple depositional events. Petrological analysis shows that the fossil-bearing sediments were remobilised and deposited by water. The Lujiatun dinosaurs and other fossils were therefore not killed by a single airborne volcanic ash, but in multiple flood events with a high load of volcaniclastic debris. (C) 2015 The Authors. Published by Elsevier B.V.
机译：陆家屯单元（义县组）产生了中国东北热河群（下白垩统）最壮观的脊椎动物化石。标本的保存方式是铰接的和三维的，与大多数Jehol化石不同，后者接近二维的压缩化石。该地点被称为“中国庞贝城”，因为恐龙和其他动物被假定一次被热的空中火山残骸和火山灰杀死并埋葬;这尚未得到证实。详细描述了陆家屯部队化石的沉积学背景的现场和实验室证据，并用于评估化石残留是否与单个沉积事件相对应，以及该事件是否是火山活动的直接结果。陆家屯单元的化石出现在火山碎屑沉积物的若干层中，代表了多种沉积事件。岩石学分析表明，含化石的沉积物被水迁移并沉积。因此，陆家屯的恐龙和其他化石不是被单一的机载火山灰杀死，而是在多次洪水事件中被大量火山碎屑杀死。 （C）2015作者。由Elsevier B.V.发布

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