Organic matter from the Lower Paleozoic strata on the northern margin of the Tarim Basin of China contains abundant alkylcyclohexanes.The n-alkylcyclohexanes sh
Two principal hydrothermal events have been recognized ,which resulted in the tin-bearing skarns at Red-A-ven ,Northwest Dartmoor.Tin was enriched during both t
The total rare-earth element values(ΣREE)of loess in the Xinjiang region vary over a range of 128-200 ppm ,with an average of 153ppm .The average REE content o
Reported in this paper are:1)the law of element abundance relationships:element abun-dances are of power function with each other in an igneous rock petrogeneti
The exhalation origin of the ankerite-siliceous rocks associated with Pb-Zn mineralizations in the Devonian system of Qinling is discussed in the light of geolo
Recognized in the Xianghualing region,South Hunan are three major types of granitoids,i.e.,biotite granite,zinnwaldite-albite granite and xianghuagite,which evo
This paper presents the results of experiments on the physicochemical conditions for the formation of picaromerite in the five-component brine system K-Na-Mg-Cl