Adakites are magmatic rocks with specific geochemical characteristics and dynamics that provide important clues to understanding the magmatic-tectonic evolution of orogenic belts. We studied Early Triassic Nanpo adakitic pluton Luang Prabang-Loei tectonic belt in Eastern Tethys domain (Laos Sarakan) using detailed petrological, zircon U-Pb chronological, whole-rock geochemical, Lu-Hf isotope st...

Geochemical anomalies are geochemical features different from what is considered normal. They can be the result of: 1. unusual or uncommon processes concentrating particular elements (e.g. an ore-forming process, weathering and element dispersion from an unusual element concentration such as an orebody); 2. element accumulation or concentration by common processes acting over long periods (e.g....

Exposures of enclave-bearing granitoids can provide rare opportunities to directly evaluate the connection between compositional variability and depth origin arc magmatic rocks. The ∼1000 km long Gangdese batholith is a composite with composition from mafic felsic; SiO2 ranges 51 wt% 70 wt%. New zircon U−Pb dating Nyemo plutons, Renbu Xigaze plutons in consistent their emplacement crystallizati...

Oil spills and natural oil seeps are sources of petrogenic hydrocarbons in soils sediments. To determine the source hydrocarbon contamination environment geochemical signature contaminant needs to be characterised. Here, we present biomarker other molecular marker diagnostic ratios Alberta Sands using gas chromatography-mass spectrometry characterise deposits detect their incorporation surficia...

Exploration geochemistry continues to be a major contributor to mineral exploration programs at all scales. The decade has spanned a complete economic cycle in the minerals industry, during which there has been a change in exploration emphasis from the dominance of Au and diamonds to the addition of a range of base metals and the recent revival of U exploration. Increasing metal prices and the ...

The long-lived radionuclide Tc-99 is thought to be highly mobile in biogeochemical cycles, however, the behavior in the natural environment is not clear because Tc is a redox sensitive element. Since the geochemical behaviors of Re and Tc are similar, Re transfer factors from soil to plant can be a Tc surrogate in the natural environment. However, in soil solution to plant systems, it was not c...

Geochemical analysis of sediments recovered from NS-1 well and NS-2 well, Leuma Field, Coastal Swamp Depobelt, Niger Delta Basin was done to establish tectonic setting provenance. Data for ten major elements forty-three trace were obtained two boreholes. The geochemical signals display systematic stratigraphic trends in the wells that depict one source terrain. To determine provenance sediments...

The isotope ratios of Sr are useful tracers for studying parent material sources, weathering processes, and biogeochemical cycling. Mineralogical and geochemical investigations of two lateritic weathering covers, in an area close to the Tropic of Cancer (Guangxi Province, southern China), were undertaken to study the regional weathering processes and Sr isotopic sources. We found that weatherin...

The geochemical behaviors of Vand Sc during partial melting are more similar to each other than to most other elements but, in detail, the partitioning of V is redox-sensitive whereas that of Sc is not. The V/Sc ratio in basalts is shown here to be a sensitive and robust recorder of the oxygen fugacity (fO2) of their mantle source regions. The use of V/Sc ratios differs from the use of V and/or...