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沉积物岩芯的碳酸盐、石膏等蒸发盐含量和矿物组成的证据显示了新疆巴里坤湖末次间冰期以来一直是一个水位变化频繁的浅水盐湖,有时甚至为间歇式的湖泊,约在34000aB.P.前后巴里坤湖沉积相发生了显著的变化,34000aB.P.之前为泥坪-湖滨相沉积,34000aB.P.之后为成湖相沉积。尽管我们对巴里坤湖34000aB.P.前后的沉积相变难以理解,但是长期处于浅水状态的巴里坤湖沉积物中蒸发盐的含量和矿物组成仍然与气候变化密切相关。在泥坪-湖滨相形成的碳酸盐中白云石相对的增加是地表强烈蒸发的结果。以石膏为主的蒸发盐含量增加是温度和降水增加所致,而其含量减少则是冰川前进致使补给水矿化度降低造成的。这使我们获得了该区古气候变化并不服从于冰期与雨期同步模式的信息。
Evidence of evaporite contents and mineralogical composition of sediments such as carbonate and gypsum shows that the Barkol Lake in Xinjiang has been a shallow salt lake with frequent changes in water level since the last interglacial, sometimes even intermittent lakes at about 34000aB Before and after the Barkol Lake sedimentary facies have undergone significant changes, 34000aB.P. Before the mud Ping - lakes facies deposition, 34000aB. P. After the lake deposition. Despite our 34000aB on Barkol Lake. P. Before and after the sedimentary facies change difficult to understand, but the long-term shallow waters of Barkol Lake sediments evaporation salt content and mineral composition are still closely related with climate change. The relative increase in dolomite in the mudflat-lacustrine carbonate is the result of intense surface evaporation. The gypsum-based increase of evaporation salt content is caused by the increase of temperature and precipitation, while the decrease of its content is caused by the decrease of salinity of make-up water caused by the advance of glacier. This allowed us to obtain information that the paleoclimatic changes in the area did not obey the synchronic pattern of glacial and rain periods.