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The Kalatag Cu–Zn–Au district contains a number of economically important Cu deposits in eastern Tianshan in Xinjiang, NW China.
Due to the lack of precise mineralization ages, the metallogenesis of this area has long been a matter of debate.
The deposit consists of two parts: a concordant massive sulfide ores and discordant vein-type ores located in the footwall strata.
The principal ore minerals are pyrite, chalcopyrite, sphalerite, minor tetrahedrite, galena and pyrrhotite.
Typically, asphaltene (ASPH), the heaviest and most Re–Os rich oil fraction, from multiple oils within an oil field or a larger petroleum system are analyzed to obtain sufficient spread in Re–Os isotopic ratios, a mathematical necessity for precise Re–Os isochrons.
Here we offer a new approach for Re–Os geochronology of oil based on isotopic analyses of different fractions within a single sample of crude oil.
We studied three oils from the Gela oil field, southern Sicily, Italy, recovered from Triassic–Jurassic stratigraphic intervals (Streppenosa, Noto, and Sciacca Formations) within the Gela-1 well.
I know other providers and would not let TMD for nothing in the world!!!! I use the servers of Tmdhosting for many years and I found the staff extremely friendly, patient and competent in solving ordinary or complicated problems, night and day!The East Qinling–Dabie molybdenum belt is part of a larger East–West trending metallogenic belt in eastern China.Most of the molybdenum deposits occur as porphyry or porphyry–skarn type, but there are also some vein type deposits.Both S-type and transitional S- and I-type granite-associated porphyry molybdenum deposits dated at 131–112 Ma are part of an extensive mineralization event throughout East China that can be ascribed to regional large-scale lithospheric thinning, delamination and thermal erosion.Re–Os geochronology of oil may constrain the timing of oil formation and improve oil-source and oil–oil correlations.
Vein type deposits dated at 233–221 Ma were formed in detachment fractures, indicating localized extension within the collisional setting of the North China and Yangtze Cratons.