The Dongxiang tungsten–copper deposit is a large W–Cu located in the northeast of Jiangxi province south China. Previous studies have mainly considered geochemical and isotopic attributes ore deposit, but information still lacking on genesis setting mineralization-related intrusive rocks. This paper presents systematic elements Sr–Nd–Hf data granodiorite porphyry. porphyry intermediate–acidic c...

The demand for shale gas has propelled researchers to focus on precise and high-resolution stratigraphic divisions homogeneous shales, of which the late-Ordovician Wufeng (O3w) early-Silurian Longmaxi (S1l) formations in southwest China are two best candidates exploration China. However, systematic chemostratigraphic work these strata is still sparse, existing either lack representativeness ter...

lag is a general term applied to coarse grained (> 2 mm), hard, but partially weathered rockfragments, which are concentrated at the surface through attrition of finer materials. based on morphology,mineralogy and the origin of lag from the cobar region of australia, lag may be conveniently grouped intothree broad morpho-mineralogical categories; (a) those with a rough, blocky, lithic morpholog...

Historical sediment nutrient concentrations and heavy-metal distributions were studied in fi ve embayments in the Gulf of Finland and an adjacent lake. Th e main objective of the study was to examine the response of these water bodies to temporal changes in human activities. Sediment cores were collected from the sites and dated using 210Pb and 137Cs. Th e cores were analyzed for total carbon (...

General comments: This paper (bg-2012-148) carefully studied about the bacterial and archaeal community structures in six water-flooding petroleum reservoirs with different temperatures (20 to 63 degree C). The microbial communities shifted from high-temperature (e.g. archaea: Thermococcus, Methanothermobacter, Thermoplasmatales, bacteria: Firmicutes, Thermotogae, Thermodesulfobacteria) to lowt...

Molecularly-uncharacterized organic matter comprises most reduced carbon in soils, sediments and natural waters. The origins, reactions and fates of these ubiquitous materials are relatively obscure, in large part because the rich vein of geochemical information that typically derives from detailed structural and stereochemical analysis is yet to be tapped. This discussion highlights current kn...