Abstract The Miocene Diatom Suite sediments of the Eastern Paratethys Sea, Azerbaijan, provide significant information to establish how Middle Miocene climate influenced erosion, sedimentation and deposition in the marine environments and continental source areas of Western Asia. Discriminant function analyses, ratios of Ti/Al, Si/Ca and Sr/Ca as well as mineralogical composition data indicate the Karaganian-Konkian sediments from the Perekuskul-Diatom section were derived largely from the Greater Caucasus with a recognizable input from the Russian Platform during earliest Konkian. The chemical index of alteration and detrital clay mineral content document a change in climatic conditions from humid to relatively arid conditions occurred in the Greater Caucasus and Russian Platform area during the Karaganian-Konkian. The distribution of redox-sensitive elements across the Miocene Diatom Suite indicate oxic conditions prevailed in the Eastern Paratethys Sea Basin during the deposition of the Karaganian-Konkian sediments. Geochemical proxies suggest that, despite the Cenozoic been a period of global cooling, eastern Azerbaijan was mainly characterised by a moderately humid to arid climate during this time. This indicates that warm climatic conditions, as seen during the mid-Miocene Climatic Optimum, were notably prolonged in the region of the Eastern Paratethys Sea basins and adjacent source areas, possibly reflecting palaeo-geographic changes in ocean and wind circulation patterns and/or local climate forcing associated with regional volcanic methane emissions.

中文翻译：

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东帕特提斯古环境条件的新限制：来自中新世硅藻套件（阿塞拜疆）的影响

摘要 阿塞拜疆东帕特提斯海的中新世硅藻组沉积物为确定中中新世气候如何影响西亚海洋环境和大陆源区的侵蚀、沉积和沉积提供了重要信息。判别函数分析、Ti/Al、Si/Ca 和 Sr/Ca 的比率以及矿物组成数据表明来自 Perekuskul-Diatom 剖面的 Karaganian-Konkian 沉积物主要来自大高加索地区，可识别的输入来自俄罗斯平台在最早的康基安时期。蚀变和碎屑粘土矿物含量的化学指数记录了大高加索和俄罗斯地台地区在卡拉干-孔基期发生的气候条件从潮湿到相对干旱的变化。中新世硅藻组中氧化还原敏感元素的分布表明，在 Karaganian-Konkian 沉积物沉积期间，东部 Paratethys 海盆中盛行有氧条件。地球化学指标表明，尽管新生代是全球变冷的时期，但阿塞拜疆东部在此期间的主要特征是中度湿润至干旱气候。这表明东帕拉提提斯海盆和邻近源区地区在中中新世气候最佳时期所见的温暖气候条件明显延长，可能反映了海洋和风环流模式和/或局部地区的古地理变化。与区域火山甲烷排放相关的气候强迫。