Bennett Island stands alone in a remote part of the Arctic and information on its geology is essential to ascertain relations with other terranes in order to restore the early Palaeozoic Arctic palaeogeography. Lower Palaeozoic sedimentary rocks throughout the island were studied thoroughly for the first time. The Ordovician section (> 1.1 km thick) comprises three units: Tremadocian, lowest Floian black shale (130–140 m); Floian, lower Dapingian carbonate turbidite (> 250 m); and Dapingian, lower Darriwilian siliciclastic turbidite (> 730 m). Ordovician deposits conformably overlie Cambrian rocks deposited within the Siberian shelf, as shown earlier. Most of the Ordovician succession was formed in a deep trough that received carbonate debris from a nearby carbonate platform and silicate material from a distant landmass located to the NE (present coordinates). The Bennett Island Ordovician rocks have much in common with those of both the Central and Northern Taimyr belts. It could be tentatively suggested that both belts merged at their eastern continuation in the vicinity of De Long Islands. The whole system probably extends further eastwards. The Ordovician facies patterns and faunal assemblages in the New Siberian Islands are notably similar to those of northwestern Alaska, where the same lateral transition from turbidites to shelf limestones was reported.

中文翻译：

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贝内特岛（德朗群岛，俄罗斯北极）的奥陶系浊积岩和黑色页岩及其对北极相关性和古地理的意义

贝内特岛独立于北极的偏远地区，其地质信息对于确定与其他地体的关系以恢复早期古生代北极古地理至关重要。首次对全岛下古生界沉积岩进行了深入研究。奥陶系剖面（> 1.1 km 厚）包括三个单元：Tremadocian、最低 Floian 黑色页岩（130-140 m）；弗洛阶、下大坪阶碳酸盐浊积岩（> 250 m）；和大坪阶、下达里维阶硅质碎屑浊积岩（> 730 m）。如前所述，奥陶纪沉积物与沉积在西伯利亚大陆架内的寒武纪岩石相一致。大部分奥陶纪演替形成于一个深槽中，该槽接收来自附近碳酸盐台地的碳酸盐碎片和来自位于 NE（当前坐标）的遥远陆地的硅酸盐材料。贝内特岛奥陶纪岩石与泰米尔中部和北部带的岩石有很多共同之处。可以初步认为，两条带在德朗群岛附近的东部延续部分合并。整个系统可能会进一步向东延伸。新西伯利亚群岛的奥陶纪相模式和动物群落与阿拉斯加西北部的相似，据报道，阿拉斯加西北部也出现了从浊积岩到陆架石灰岩的相同横向转变。可以初步认为，两条带在德朗群岛附近的东部延续部分合并。整个系统可能会进一步向东延伸。新西伯利亚群岛的奥陶纪相模式和动物群落与阿拉斯加西北部的相似，据报道，阿拉斯加西北部也出现了从浊积岩到陆架石灰岩的相同横向转变。可以初步认为，两条带在德朗群岛附近的东部延续部分合并。整个系统可能会进一步向东延伸。新西伯利亚群岛的奥陶纪相模式和动物群落与阿拉斯加西北部的相似，据报道，阿拉斯加西北部也出现了从浊积岩到陆架石灰岩的相同横向转变。