Trace and rare earth element (REE) of Jurassic mudstones from the northern Qaidam Basin of northwest China were measured by inductively coupled plasma mass spectrometry (ICP-MS) analysis. The analytical results show that the trace element and REE concentrations are higher than in the average of the upper crust. Three aspects evolved: (i) the paleoclimate index, Σ(Fe + Mn + Cr + Ni + V + Co)/Σ(Ca + Mg + Sr + Ba + K + Na), varies between 0.27 and 1.14 indicating semi-arid to semi-moist conditions during the Jurassic; the Middle Jurassic is more arid than the Early Jurassic; (ii) absence of marine transgression during the sedimentation period of the Jurassic mudstones, mainly evidenced by the Sr content ranging from 0.05‰ to 0.33‰ and Sr/Ba

Trace and rare earth element geochemistry of Jurassic mudstones in the northern Qaidam Basin, northwest China

Late Jurassic–Early Cretaceous continental convergence and intracontinental orogenesis in East Asia: A synthesis of the Yanshan Revolution

Middle Jurassic lacustrine source rocks controlled by an aridification event: A case study in the northern Qaidam Basin (NW China)

Organic petrologic and geochemical characterization of petroleum source rocks in the Middle Jurassic Dameigou Formation, Qaidam Basin, northwestern China: Insights into paleo-depositional environment and organic matter accumulation

Integrated geophysical studies on the distribution of Quaternary biogenic gases in the Qaidam Basin, NW China

Based on the particular geological conditions of forming biogenetic gas reservoir in Qaidam basin, it is calculated from Monte Carlo method that the total resource amount of biogenetic gas is 14 755×108 m3, integrated with the results obtained from trap geological analysis and basin modeling method. Also, petroleum assessment system (PASYS) is adopted to evaluate the resource potential of this basin and plays/blocks, and the favorable areas for biogenetic gas prospecting in the near future are Beipo (northern slope) and the Central Depression with corresponding exploration targets, of which the buried structural trap and non-structural trap are the main concern in Qaidam basin.

Assessment of Biogenetic Gas Reservoir Potential in Qaidam Basin

Evolution of the Jurassic sedimentary environment in northern margin of Qaidam Basin and its significance in petroleum geology

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Assessment of Biogenetic Gas Reservoir Potential in Qaidam Basin

Evolution of the Jurassic sedimentary environment in northern margin of Qaidam Basin and its significance in petroleum geology