中国钙华沉积与气候变化关系研究  

Relationship between Travertine Sedimentation and Climate Change in China

作　　者：严飞 董发勤[2] 代群威[3] 曾嘉 曹芹 王尹佳 代钎里 易小枭 杨刚[1] YAN Fei;DONG Fa-qin;DAI Qun-wei;ZENG Jia;CAO Qin;WANG Yin-jia;DAI Qian-li;YI Xiao-xiao;YANG Gang(School of Life Science and Engineering,Southwest University of Science and Technology,Mianyang Sichuan 621010,China;Key Laboratory of Waste Solid Treatment and Resource Recycle of Ministry of Education,Southwest University of Science and Technology t Ministry of Education,Mianyang Sichuan 621010,China;School of Environment and Resources,Southwest University of Science and Technology,Mianyang Sichuan 621010,China)

机构地区：[1]西南科技大学生命科学与工程学院,四川绵阳621010 [2]固体废物处理与资源化教育部重点实验室,四川绵阳621010 [3]西南科技大学环境与资源学院,四川绵阳621010

出　　处：《矿物岩石地球化学通报》2021年第5期1189-1197,共9页Bulletin of Mineralogy, Petrology and Geochemistry

基　　金：国家自然科学基金项目(41877288,41572035)。

摘　　要：钙华是第四纪研究中的重要标志物,它记录了地质构造活动和气候变化信息。钙华沉积和气候变化之间可能存在联系,但它们之间的确切关系还不清楚。本文收集了中国的50处钙华地理坐标及98个已发表的钙华年龄数据,并使用钙华数量出现峰值的年龄与第四纪典型气候事件发生的时间进行比较分析,以检验钙华沉积受气候变化调节的假设。数据分析表明,中国钙华在空间上主要分布在水量充足气候温暖且地势起伏大、水动力强的西南地区;在时间上钙华数量出现峰值的频率大致对应于气候的10万年(100 ka)冰期旋回,每100 ka的最大峰值均出现在间冰期或过渡期(冰川期向间冰期过渡时期)这两个较温暖时期。并得出中国钙华在气候温暖且降水或地下水丰富的时期沉积速率更高,而在气温降低水量减少时期沉积速率较低。Sedimentary travertine, which records information of the geological tectonic activity and the climate change, is an important subject in Quaternary research. Prior studies had shown that the deposition of travertine is related to the climate change, but the exact relationship remains vague. To test the hypothesis of that travertine deposition is regulated by the climate change, this paper collected 98 published travertine age data and information of travertines from 50 different geographical sites in China, and analyzed the relationship between peak times of travertine deposition and typical Quaternary climate events. The results showed that, spatially, travertines mainly distributed in the area of southwest China, where water is abundant, climate is warm, terrain is undulating and hydrodynamic conditions are strong, and temporally, the peaking frequency of travertine deposition conformed roughly to the 100 ka climatic cycle(the 100 ka glacial cycle), while peaks of the 100 ka travertine deposition cycle appeared commonly in interglacial periods or the transition periods of from glacial period to interglacial period. Therefore, we concluded that the deposition rate of travertine in China is higher in the period of warm and wet climate and lower in the period of cold and dry climate.

关 键 词：钙华 第四纪 气候变化 冰期旋回 

分 类 号：P532[天文地球—古生物学与地层学]