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A short core of 33 cm length was obtained from lacustrine sediments of Lake Yangzonghai, Yunnan Province, China. A power plant, built in 1960 is located close to the northeast corner of the lake, and black burned coal ashes can be found within the uppermost 12 cm of the sediments. The age frame of the core was determined based on 137 Cs and 210 Pb analyses. Magnetic,...
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