Abstract

The Stratigraphic Drilling Project of the Russian Arctic Shelf, conducted by the Rosneft Oil Company, focuses their attention on the stratigraphic age and composition of rock complexes of the sedimentary basins. In 2021, six shallow boreholes for the first time were drilled with core sampling in the eastern part of the Laptev Sea. Drilling recovered sedimentary rocks of the folded basement that have been dated to the Late Barremian–Early Aptian. The synrift complex lying with angular unconformity has been dated to the Paleocene. The section of the overlying Eocene–Pleistocene sediments contains significant hiatuses. The data obtained by drilling together with the results of seismic interpretation allowed us to clarify the regional geological model and to date the stages of its tectonic evolution.

中文翻译：

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拉普捷夫海东北部地层钻探：初步结果

摘要

由俄罗斯石油公司进行的俄罗斯北极陆架地层钻探项目重点关注沉积盆地的地层年龄和岩石复合体的成分。 2021年，在拉普捷夫海东部首次钻探了六个浅井并进行岩心取样。钻探发现了折叠基底的沉积岩，其年代可追溯到巴雷姆晚期-阿普第早期。具有角度不整合的同裂谷杂岩可以追溯到古新世。上覆的始新世-更新世沉积物部分存在明显的断层。通过钻探获得的数据和地震解释结果使我们能够澄清区域地质模型并确定其构造演化的阶段。