Department of geology northwest university

Qi Kai, Ph.D. student of our department, won the excellent student thesis award of "the 7th Academic Symposium on fluid geoscience, mineral resources and environmental disasters"

& nbsp; from April 26 to 30, the 7th academic seminar on fluid geoscience, mineral resources and environmental disasters, sponsored by the professional committee of fluid geoscience of Chinese Geophysical Society and the State Key Laboratory of oil and gas reservoir geology and development engineering, was held in Chengdu, Sichuan Province. Qi Kai, a doctoral student in my department, won the excellent student thesis Award for his academic paper "Meso Cenozoic literal dynamic evolution in the Ordos Basin, wncc: insight from the study on literal thermal structure".

& nbsp; deep earth fluid research is the scientific frontier of resources, environment and disasters, and plays an increasingly important role in solving the major practical problems faced by human society, such as resources, environment and disasters. This session covers supercritical fluid geochemistry, mantle fluid and deep geological process, deep fluid and geotectonics, deep fluid process and oil and gas formation and distribution, deep fluid process and metal mineral formation and distribution, deep fluid process and geothermal, dry hot rock and deep hydrogen resource, deep fluid process and volcano, strong earthquake preparation mechanism, earth exhaust and greenhouse gas Nine themes, i.e. body, haze and extreme weather, fluid theory and technical methods, come from CNPC, Sinopec, nuclear industry, China Geological Survey, Seismological Bureau, Institute of Geophysics, Chinese Academy of Sciences, Chengdu University of science and technology, China University of Geosciences (Beijing), Hong Kong University, China University of petroleum, Northwest University, China University of mining (Beijing), Jilin University, etc More than 230 experts, scholars and graduate students from 9 units attended the meeting. The conference selected more than 150 academic reports for exchange, and selected 10 excellent report papers of students through careful evaluation by the expert group.

& nbsp; the award-winning thesis is part of the achievement supported by Professor Ren Zhanli, the tutor of national key Natural Science Foundation (41630312)," the constraint of paleogeothermal field on the dynamic evolution of lithosphere and the occurrence of oil and gas in the late Mesozoic in Ordos and Qinshui sedimentary basins ". In view of the scientific problem of the deep structure and dynamic mechanism of the lithosphere since the Mesozoic and Cenozoic in the Ordos Basin in the western part of the North China Craton, based on the characteristics of the present geothermal field of the basin, the recovery of the thermal history of the Mesozoic and Cenozoic, and the study of the deep layer structure of the lithosphere, this paper obtains the thermal structure and thickness information of the Meso Cenozoic lithosphere in different structural units. The results show that the basin reached the peak of heat flow at the end of Early Cretaceous, and the peak of mantle heat flow was 46.65-62.97 MW / m2, far more than 50% of the total heat flow, reflects a typical "hot mantle cold crust" lithosphere structure. In the early Cretaceous, the lithosphere was thinned on a large scale, and the minimum thickness of the hot lithosphere was 50-75km. The average thickness of the hot lithosphere in the basin today is 81-158km, showing the characteristics of thin in the East and thick in the West. The mantle is relatively "hot" and distributed in 22.10-38.76 Between MW / m2, it reflects the lithospheric structural characteristics of "hot crust and cold mantle". In addition, the relationship between thermal structure and rheological structure, structure and magmatic activity is further discussed, and the Meso Cenozoic thermal system and lithospheric dynamic mechanism of Ordos Basin are preliminarily proposed. This study provides important evidence for the evolution and dynamic mechanism of the lithosphere in the western part of the North China Craton.

Location:Home > About > Notice >