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首页> 外文期刊>Chinese science bulletin >Marine dinoflagellates from Lower Cretaceous Muling Formation of Jixi Basin, China and their palaeoenvi- ronmental significance
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Marine dinoflagellates from Lower Cretaceous Muling Formation of Jixi Basin, China and their palaeoenvi- ronmental significance

机译：鸡西盆地下白垩统穆林组海藻鞭毛虫及其古环境意义

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摘要

Newly discovered marine dinoflagellates from the lower-middle parts of the Lower Cretaceous Muling Formation of the Jixi Basin, eastern Heilongjiang Province, China, were identified as Circulodinium cingulatum He et al., C. attadalicum (Cookson et Eisenack) Helby, Palaeoperidin-ium cretaceum Pocock, Oligosphaeridium totum Brideaux and Sentusidinium sp. Most of these species are distributed in the marine Lower Cretaceous strata of Europe, North America, Africa, Australia and Asia. It demonstrates that a transgression occurred in eastern Heilongjiang Province during the deposition of the Muling Formation, which was previously considered to be a coal-bearing continental stratigraphic unit. The marine dinoflagellates indicated that the Muling Formation is Barremian in age. The Palaeogeographic framework of eastern Heilongjiang Province in Late Mesozoic era should be rebuilt through systematic facies analyses of the marine, paralic and terrestrial deposits.
机译：来自中国黑龙江省东部鸡西盆地下白垩统穆林组中下部的新发现的鞭毛鞭毛藻被鉴定为环丁香Circleodinium cingulatum He等人，C。attadalicum（Cookson等人）Helby，古oper纲Cretaceum Pocock，Oligosphaeridium totum Brideaux和Sentusidinium sp。这些物种大多数分布在欧洲，北美，非洲，澳大利亚和亚洲的下白垩统海洋地层。这表明在黑龙江省东部，在以前被认为是含煤的大陆地层单元的穆林组沉积期间发生了海侵。海洋鞭毛虫表明，穆林组年龄为巴雷米亚。应通过对海相，旁生和陆相沉积进行系统性相分析，重建中东部晚期黑龙江省的古地理框架。

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