【摘 要】
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The paper presents new results in geochemistry and diatoms analyses of the short sediment cores, obtained in 2005 from the Lake Dood (Darhad Basin).The names, length and locations of cores are as foll
【机 构】
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Institute of Geology and Mineral Resources of the MAS, Ulan Batar, Mongolia
【出 处】
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“东亚欧环境变化过程-亚洲季风变化与高低纬气候相互作用”第八届国际研讨会
论文部分内容阅读
The paper presents new results in geochemistry and diatoms analyses of the short sediment cores, obtained in 2005 from the Lake Dood (Darhad Basin).The names, length and locations of cores are as following: Core-1, 613 cm, 51°24′26.0″N, 99°19′30.7″E; Core-2, 380 cm, 50°23′43.4″N, 99°21′33.7″E ; Core-3, 150 cm, 51°24′03.0″N, 99°21′17.07″E.The core samples have been subjected to lithology description, determinations of water contents (WC%), organic matter, total organic carbon (TOC), total nitrogen (TN), C/N and total sulfur (TS) contents with aims of recording paleo-environmental changes in northern Mongolia.Water and organic matter were determined using drying oven and furnace, while total carbon (TC), total nitrogen (TN) and total sulfur (TS) contents were analyzed by Elemental Analyzer (Flash EA112 series CHNS-O).The diatom study shows that the sediments of the Dood Lake contain diatoms belonging to the 24 genus and 50 species.
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