三水盆地下古近系主量元素、与有机质相关元素的组成及其古气候意义  

Composition of Major and Correlated Elements with Organic Matters and Paleoclimatic Implication for Lower Paleogene Sediments in Sanshui Basin

作　　者：陈亮[1] 黄伟[2] 谢焱石[2] 王正庆[2] 马强[2] 

机构地区：[1]南华大学矿业工程博士后流动站,湖南衡阳421001 [2]南华大学核资源与核燃料工程学院,湖南衡阳421001

出　　处：《桂林理工大学学报》2013年第2期223-229,共7页Journal of Guilin University of Technology

基　　金：国家自然科学基金项目(40872024);湖南省教育厅项目(12C0326);南华大学博士启动基金(2012XQD08)

摘　　要：为了深化对三水盆地古近纪时期古气候的认识,以SB-01孔岩心沉积物为研究对象,通过分析其主量元素、与有机质相关元素的组成,并利用因子分析方法解析该元素组成的古气候意义,结合其他古气候指标,研究了三水盆地古近纪早期的古气候演化。影响岩心沉积物主量元素、与有机质相关元素化学组成的主要因素为降雨量与温度,且降雨量的影响相对更为重要。根据因子得分曲线的变化规律,三水盆地古近纪早期的古气候演化经历了较为干燥且偏冷→温湿→古气候条件快速变化、热湿与凉干交替出现→温湿为主的4个主要阶段。By correlated paleoclimate indicators,the paleoclimate evolution during the deposition of Lower Paleogene sediments from Core SB-01 in Sanshui Basin can be reconstructed through the analysis of the compositions of the major elements and the element correlated with organic matters and their paleoclimatic implications using the method of factor analysis,for further understanding of Paleogene paleoclimate of the basin.The main factors influencing the compositions of the major elements and the element correlated with organic matters are precipitation and temperature.Precipitation plays relatively more important role.Based on the change of the factors,the paleoclimate process of the Early Paleogene in Sanshui Basin can be obtained： Stage I（89.0 73.0 m） with drier and colder condition;Stage II（73.0-52.5 m） with warm and moisture condition;Stage III（52.5-22.5 m） a rapid change of climatic condition,alternation between hot-humid and cool-dry;Stage IV（22.5-0 m） with prevailing warm and moisture condition.

关 键 词：古气候 元素组成 因子分析 古近纪 三水盆地 

分 类 号：P632[天文地球—地质矿产勘探] P532[天文地球—地质学]