Division and Correlation of Pliocene and Early Pleistocene Fluvio-lacustrine Strata in the Zhada Basin, Tibet, China
西藏札达盆地上新统一早更新统河湖相地层多重地层划分与对比

Based on the contact relationship, the sedimentary cycle, the sedimentary system, lithofacies, lithology, palaeontologic features, and the results of the ESR and paleomagnetic dating in the measured geologic section, the authors redivided the Pliocene-Early Pleistocene fluvio-lacustrine facies strata in Zanda basin of Tibet, with the age redefined. The division and correlation of the multiple strata were made for the Pliocene and Early Pleistocene fluvio-lacustrine strata in Zanda basin, in combination with such factors as rock stratigraphy, biostratigraphy, chronohorizon, magnetostratigraphy, sequence stratigraphy, and event geological structure of the fluvio-lacustrine facies sediments. The fluvio-lacustrine strata in Zanda basin are divided into 3 groups, 4 sedimentary facies, 7 sedimentary subfacies and 11 lithologic members. The strata of the fluvial and lacustrine sediments have been divided from top to bottom into Early Plestocene Qangzê Formation ( Qp1-1x ), Neogene Pliocene Guge Formation ( N22g ) and Neogene Pliocene Tuolin Formation (N12t).