摘要
During the period from 7.0 to 1.7 Ma B. P., the Gyirong Basin formed in the Late Miocene was filled with more than 300m of fluvio-lacustrine sediments. Since 1.7Ma B. P., the Himalaya has been strongly rising and the basin dissected by the river on the southern slope of the Himalaya had finished its sedimentary history. Based on the data on sedimentology, magnetostratigraphy, paleontology and oxygen and carbon isotope, the tectonic and dimatic events since the Late Miocene are reconstructed. It is pointed out that the Himalaya uplift commenced before 7.0Ma B.P.. but the strong uplift took place during 2.0 -1.7 and after 0.8 Ma B.P., the most important dimatic events took place between 5.7 and 2.5 Ma BP., the dimatic cydes in the glacial and interglalcial periods began at 1.7 Ma B.P. and was strengthened after 0.8 Ma B.P.
During the period from 7.0 to 1.7 Ma B. P., the Gyirong Basin formed in the Late Miocene was filled with more than 300m of fluvio-lacustrine sediments. Since 1.7Ma B. P., the Himalaya has been strongly rising and the basin dissected by the river on the southern slope of the Himalaya had finished its sedimentary history. Based on the data on sedimentology, magnetostratigraphy, paleontology and oxygen and carbon isotope, the tectonic and dimatic events since the Late Miocene are reconstructed. It is pointed out that the Himalaya uplift commenced before 7.0Ma B.P.. but the strong uplift took place during 2.0 -1.7 and after 0.8 Ma B.P., the most important dimatic events took place between 5.7 and 2.5 Ma BP., the dimatic cydes in the glacial and interglalcial periods began at 1.7 Ma B.P. and was strengthened after 0.8 Ma B.P.
基金
Project supported by the National Climbing Project Foundation of China.
