Abstract

The seismic stratigraphy scheme for the shelf basins of the East Siberian Sea and the Chukchi Sea region and the adjacent deepwater area of the Amerasia basin has been developed, and mega-sequences (or tectonostratigraphic units) with the conventional ages of 125‒100, 100‒80, 80‒66, 66‒56, 46‒45, 45‒34, 34‒20, 20‒0 Ma are distinguished. Zhokhov foredeep basin of the Late Jurassic‒Neocomian age is distinguished between the New Siberia and the De Long islands. Three main phases of rifting are identified on the shelves in the region with ages of 125–100, 66–56, and 45–37 Ma. The main phase of continental rifting occurred in the Podvodnikov and Toll basins at 125‒100 Ma. The typical clinoform accumulation of sediments occurred at the edge of the shelf at 66–20 Ma. We identified three syntectonic epochs of the formation of clinoform sequences with the ages of 66–45, 45–34, and 34–20 Ma. The phase of uplifting and compression in the region of Wrangel Island happened at ≈66 Ma. The relatively monotonous tectonic setting with approximately the same thicknesses of the sedimentary cover began at 20 Ma.

中文翻译：

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东西伯利亚海和楚科奇海的沉积盆地以及美利坚合众国盆地的毗邻地区：地震地层学和地质历史阶段

摘要

已制定了东西伯利亚海和楚科奇海地区陆架盆地以及邻近的美利坚合众国盆地深水区的地震地层方案，并且常规年龄为125 age100、100年的巨型层序（或构造地层单位）区分‒80、80‒66、66‒56、46‒45、45‒34、34‒20、20‒0 Ma。在新西伯利亚和德朗岛之间，侏罗纪至新科摩斯晚期的卓霍夫前缘深海盆地是著名的。在该地区的陆架上确定了裂谷的三个主要阶段，年龄分别为125–100、66–56和45–37 Ma。大陆裂谷的主要阶段发生在Podvodnikov和Toll盆地的125×100 Ma。典型的斜状沉积物堆积发生在架子边缘66-20 Ma。我们确定了年龄为66–45、45–34和34–20 Ma的倾斜形序列形成的三个构造时期。弗兰格尔岛地区的隆起和压缩阶段发生在≈66Ma。沉积覆盖层厚度大致相同的相对单调的构造环境始于20 Ma。