Eustatic sea-level and climate changes over the last 600 ka as derived from mollusc-based ESR-chronostratigraphy and pollen evidence in Northern Eurasia
Eustatic sea-level and climate changes over the last 600 ka as derived from mollusc-based ESR-chronostratigraphy and pollen evidence in Northern Eurasia
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DOI：
10.1016/s0037-0738(01)00275-5
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发表时间：
2002-06-15
影响因子：
2.8
通讯作者：
Bolikhovskaya, NS
中科院分区：
文献类型：
--
作者：
Molodkov, AN;Bolikhovskaya, NS
我们重建和相关的古气候事件和沉积物从陆棚，冰川，冰缘，和冰外区的北方欧亚大陆在过去的60万年。年代地层的相关性确定的古环境和海平面事件和相应的视野是基于电子自旋共振（ESR）分析的亚化石软体动物骨骼遗骸从海洋，淡水和阿舍利轴承洞穴网站存款。通过对沿着欧亚大陆北部边缘、黑海盆地和里海盆地40多个地点的230多个贝壳样品和北方高加索地区旧石器时代早期洞穴中的陆生贝壳样品的ESR测年，建立了晚第四纪地质年代学。孢粉年代地层记录被解释为六个温暖的气候/高海平面事件，包括目前的间冰期，和六个冰川事件的产物。它们要么表现为冰期和间冰期等级的完整气候节律，要么表现为气候-植物群落阶段构成节律的相当一部分。完整的间冰期条件集中在约580，400，310，220和145-70万年之间。长期的孢粉序列，直接ESR测年的温暖的气候相关的事件和文献中描述的其他古环境记录之间的广泛的对应关系已经注意到11个上部氧同位素阶段（11至1）。在这项研究中获得的结果证实了综合年代-气候地层序列在连接海洋和陆地古气候记录方面的潜力，这些记录最终可能跨越整个布鲁赫年代。（C）2002年爱思唯尔科学有限公司版权所有。
We reconstruct and correlate palaeoclimatic events and deposits from shelf, glacial, periglacial, and extraglacial zones of northern Eurasia over the last 600,000 years. The chronostratigraphical correlation of identified palaeoenvironmental and sealevel events and corresponding horizons is based on electron spin resonance (ESR) analysis of subfossil mollusc skeletal remains from marine, freshwater and Acheulian-bearing cave-site deposits. Over 230 shell samples from more than 40 sites along the continental margin of Eurasian north, in the Black and Caspian sea basins and terrestrial shells from a Lower Palaeolithic cavesite in the Northern Caucasus were dated via ESR to produce a late Quaternary geochronology, The Pleistocene composite section of the loess-palaeosoil formation includes two reference sections-Likhvin and Axapovichi-from the centre of the East-European plain, The palyno-chronostratigraphic record is interpreted as the product of six warm-climate/high sea-level events including the current interglacial, and six glacial events. They are presented either as complete climatic rhythms of glacial and interglacial rank, or by considerable portions of climatic-phytocoenotic phases constituents of the rhythm. The full-interglacial conditions are centred at about 580, 400, 310, 220 and between 145-70 calendar ka. A broad correspondence between long palynological sequence, directly ESR-dated warm-climate-related events and other palaeoenvironmental records described in the literature has been noted for 11 upper oxygen isotope stages (11 to 1). The results obtained in this study exemplify the potential of integrated chrono-climatostratigraphic sequences in linking marine and terrestrial palaeoclimate records that may eventually span the whole Brunhes chron. (C) 2002 Elsevier Science B.V. All rights reserved.