The structural features of the continental shelf and oceanic basin of the Eastern Arctic as well as its tectonic history are particularly controversial. The New Siberian Islands (NSI) archipelago is one of the few territories accessible for direct geologic study in this region. The De Long Islands occupy the northernmost part of the NSI archipelago and are situated at the junction of the major tectonic units of the Eastern Arctic. This, coupled with the lack of geologic information caused by the remoteness of the islands, leads to many debates concerning the tectonic affinity and relations of the De Long Islands with adjacent units. Here we review the geology and paleomagnetism for Cambrian–Ordovician rocks of the De Long Islands. The similarity of benthic fauna groups of the De Long and adjacent Anjou basins to the Siberian Taimyr-Verkhoyansk margin indicates that the De Long unit was close to Siberia. However, some detrital zircon groups indicate their non-Siberia provenances. In this review, based on paleomagnetic evidence, we propose a global tectonic reconstruction showing interactions and drift kinematics of the NSI and the nearby Arctic terranes as well as the cratons Siberia, Laurentia and Baltica from 510 to 450 Ma. We propose the existence of a New Siberian – Chukotka – Alaska carbonate platform – a large epicontinental basin between Siberia and Laurentia with a biogeographic connection to the Verkhoyansk shelf of Siberia and potential detrital provenances from Chukotka – Alaska. The mostly transform tectonic boundaries surrounding the platform enabled its constituent terranes to drift independently while preserving conditions for unimpeded migration of Siberian benthic fauna but not for Siberia-derived zircons. Moreover, its De Long margin developed up to the Ordovician period in a suprasubductional setting and perhaps had a tectonic connection with the Mendeleev Rise.

北极东部大陆架和海洋盆地的构造特征及其构造历史尤其具有争议性。新西伯利亚群岛 (NSI)群岛是该地区为数不多的可进行直接地质研究的领土之一。德隆群岛位于 NSI 群岛的最北端，位于北极东部主要构造单元的交界处。再加上由于岛屿地处偏远而缺乏地质信息，导致了许多关于德隆群岛与邻近单元的构造亲和力和关系的争论。在这里，我们回顾了德朗群岛寒武纪-奥陶纪岩石的地质和古地磁特征底栖动物群的相似性De Long 组和邻近的 Anjou 盆地到西伯利亚 Taimyr-Verkhoyansk 边缘的组表明 De Long 单元靠近西伯利亚。然而，一些碎屑锆石群表明它们的非西伯利亚来源。在这篇综述中，基于古地磁证据，我们提出了一个全球构造重建，显示了 NSI 和附近的北极地体以及克拉通西伯利亚、劳伦蒂亚和波罗的海的相互作用和漂移运动学从 510 到 450 毫安。我们建议存在一个新西伯利亚 - 楚科奇 - 阿拉斯加碳酸盐台地 - 一个位于西伯利亚和劳伦蒂亚之间的大型陆缘盆地，与西伯利亚的 Verkhoyansk 陆架和来自楚科奇 - 阿拉斯加的潜在碎屑来源有生物地理联系。围绕平台的大部分转换构造边界使其组成的地体能够独立漂移，同时保持西伯利亚底栖动物无阻碍迁移的条件，但不适用于西伯利亚衍生的锆石。此外，其德隆边缘在超俯冲环境中发育至奥陶纪，可能与门捷列夫隆起有构造联系。