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对中祁连木里盆地新生代红层进行ESR测年,获得了祁连山地区新生代红层沉积时代及构造变形年代学数据。研究表明,中祁连木里盆地内沉积了巨厚的新生代红层,较好地记录了祁连山隆升历史。盆地最老的新生代地层为始新世由湖相沉积组成的火烧沟组,ESR年龄为40.2~35.3 Ma,与上覆沉积时代为32.6~24.3 Ma的渐新世河湖相沉积组成的白杨河组呈角度不整合接触。构造变形特征与沉积环境的变化说明始新世末与渐新世初木里地区发生了构造变形和山脉的隆升,与祁连山地区新生代早期的隆升有很好的对应关系。
ESR dating of the Cenozoic red beds in the Muli Moli Basin in the Qilian Mountains has been used to obtain the Cenozoic red beds sedimentary age and tectonic deformation chronology in the Qilian Mountains. The research shows that the Cenozoic red beds were deposited in the Muli Basin of the Central Qilian, and the uplift history of the Qilian Mountains has been recorded well. The oldest Cenozoic strata in the basin are the Huoxuegou Formation of the Eocene formed by lacustrine sedimentary facies, with the ESR age of 40.2-35.3 Ma and the Poplar sediments composed of Oligocene rivers and lakes with an overlying deposition age of 32.6-24.3 Ma River group showed an angle of unconformity contact. Tectonic deformation and sedimentary environment shows that the Late Pleistocene and Oligocene Muli area tectonic deformation and uplift of the mountains, and the Qilian Mountains uplift of the Early Cenozoic a good correspondence.