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首页> 外文期刊>Russian Geology and Geophysics >Deposits of the Kazantsevo Transgression (MIS 5) in the Northern Yenisei Region
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Deposits of the Kazantsevo Transgression (MIS 5) in the Northern Yenisei Region

机译:叶尼塞北部地区卡赞采沃海侵(MIS 5)的矿床

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Dating of marine sediments and faunal remains they contain in stratotype and reference sections by the methods of infrared optically stimulated luminescence (IR-OSL) of K-feldspar, optically stimulated afterglow (OSA) of quartz, electron spin resonance (ESR), and Th-230/U provides new constraints on deposition in the Yenisei mouth during the Kazantsevo interglacial. The luminescence and U-Th ages in the 120-68 ka range and 93-70 ka ESR ages show that the deposition spanned the whole marine isotope stage (MIS) 5. The sediment structures and textures, grain sizes and mineralogy, and faunal records indicate tidal and shelf deposition environments. The sampled assemblages of marine mollusks comprise taxa that typically live in relatively shallow and warm water, as well as abundant subarctic and boreal species, including the Arctica islandica index species. The variations of faunal patterns, more likely, had facies rather than climatic controls, while the sediments were deposited during transgression, in a warm climate, when the area was ice-free. (C) 2016, V.S. Sobolev IGM, Siberian Branch of the RAS. Published by Elsevier B.V. All rights reserved.
机译:通过钾长石的红外光激发发光(IR-OSL),石英的光激发余辉(OSA),电子自旋共振(ESR)和Th的方法,将它们包含在平层和参考剖面中的海洋沉积物和动物区系的约会-230 / U对卡赞采沃间冰期期间叶尼塞河口的沉积提供了新的限制。发光和U-Th年龄在120-68 ka范围和ESR年龄在93-70 ka范围内,表明该沉积跨越了整个海洋同位素阶段(MIS)5。沉积物的结构和质地,晶粒大小和矿物学以及动物区系记录指示潮汐和陆架沉积环境。采样的海洋软体动物群包括通常生活在相对浅水和温暖水中的生物分类,以及丰富的亚北极和北方物种,​​包括Arctica islandica指数物种。动物区系的变化更有可能具有相而不是气候的控制,而在海冰侵袭期间,在该地区无冰的温暖气候中,沉积物是沉积的。 (C)2016,V.S. Sobolev IGM,RAS的西伯利亚分公司。由Elsevier B.V.发布。保留所有权利。

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