内蒙古盐湖与台湾湖泊沉积物之古气候记录  

ON AFFINITY OF POTASSIUMBEARING BRINE IN LANPINGSIMAO BASIN,CHINA TO THAT IN ALE BASIN,THAILAND,AND LOCATION OF TARGET AREAS FOR POTASSIUM HUNTING IN FORMER BASIN

作　　者：罗建育[1] 陈镇东 陈延成[2] 

机构地区：[1]台湾中山大学海洋地质及化学研究所 [2]化学工业部化学矿产地质研究院

出　　处：《化工矿产地质》1997年第2期73-80,共8页Geology of Chemical Minerals

摘　　要：通过对位于干旱－半干旱区的内蒙古盐湖中沉积物提供的环境和气候条件之相关讯息，能解读出最近２３ｋａＢ．Ｐ．以来详细的气候变化：据今２０～２３ｋａＢ．Ｐ．期间，气候呈温干特征；之后，气候变冷进入末次冰期的极盛期。在１４．５～２０ｋａＢ．Ｐ．期间，降水量大幅度减小，夏季风萎缩，而冬季风更加强劲。自１４．５ｋａＢ．Ｐ．开始，全球进入冰消期。约在１１ｋａＢ．Ｐ．左右，出现异常降温的新仙女木（ＹｏｕｎｇｅｒＤｒｙａｓ）突变事件。自２．３ｋａＢ．Ｐ．以来，夏季风乃处于衰退减弱之趋势，其中仍有明显的气候波动。台湾的撤退池和嘉明湖沉积物，则记录着最近数千年来的气候变动，其中的冷暖变化竟也大多与内蒙古盐湖的记录相对应。似能说明２０～２３ｋａＢ．Ｐ．以来较大范围的气候变化。Chinese Lanping Simao basin and Thai Ale basin are common in geotectonic location, mineralizing age and level, and characters of brine. Paragenesis of salt minerals and compotion of primary brine in the former are the same as those in the latter largely due to northward feeding of the latter brine, as is proven by the tendency of the former brine gradually, from north to south, becoming inspissated. In the Ale basin, upper , middle and lower salt formation may be referred as three salt forming phases, and the middle has been identified in the Lanping Simao down-warped zone while the lower in the Simao basin. By inference, the Simao basin's lower salt formation is inferior in inspissation degree and superior in ore type to the Ale basin's. Thus, the formation, called lower muddy gravel formation in China, should be regarded as a potential stratigraphic level for potassium resouurce hunting.

关 键 词：内蒙古 盐湖 湖泊 盐类沉积物 古气候 

分 类 号：P512.3[天文地球—地质学] P532