In this paper the Pb-Pb isochron method was used to determine the isotopic ages of the Luoxue Formation dolomites (1716 ± 56 Ma), the Heishan Formation car
Distribution of the rare-earth elements (REE) in dacite has been studied so as to get a better understanding of the migration behavior of REE during alteration.
Analyses of fluid-inclusion leachates from ore deposits show that Na/Br ratios are within the range of 75 - 358 and CL/Br 67 - 394,respectively,and this variati
This paper deals with the geochemical features of the two Early Paleozoic ophiolite zones in the central-southern Tianshan region and the central Tianshan igneo
N-alkanes in extracts from possible carbonate source rocks of the Lower Ordovician Majiagou Formation in the central gas field of the Shanganning Basin and the
The regional migmatites in the Yunkai Block were formed under low-pressure metamorphism. The majority of their protolith are biotite-rich peraluminous gneisses.
The newly discovered three alkali-rich intrusive rock belts in the Mt.Kunlun Mt.Altun region of southern Xinjiang are the Lapeiquan-Yitunbulak alkali-rich intru
On the basis of different photosynthetic pathways, there is an obvious difference in δ 13C values between C3 plants and C4 plants. In terms of this characteris