Studying surface geochemical anomalies is important for detecting the presence of mineral deposits. However, distinguishing inconspicuous a challenge geochemists. This paper studies quantitative prediction Pb–Zn metallic deposits by identifying mainly associated with Permian and Jurassic strata in middle-southern Da Hinggan Mountains metallogenic belt. Some new methods are employed to highlight...

This study focuses on the metabasite rocks of Nemba Complex Mayombe belt, an African segment Araçuaï-West Congo Orogen (A-WCO) extending from southwest Gabon to northwest Angola. These outcrops are in southwestern along Loukounga river. The complex is Neoproterozoic age and represents lower part west congolian Supergroup. objective this constrain geodynamic context petrology geochemistry metaba...

The 500,000 km Saharan Metacraton in northern Africa (metacraton refers to a craton that has been mobilized during an orogenic event but that is still recognisable through its rheological, geochronological and isotopic characteristics) is an Archean–Paleoproterozoic cratonic lithosphere that has been destabilized during the Neoproterozoic. It extends from the Arabian–Nubian Shield in the east t...

The rare earth elements (REE) are composed of the Lanthanide Series of 15 elements with atomic numbers (57) through (71) and yttrium (39). Because of their geochemical behavior, REE rarely form their own minerals and more commonly are found incorporated within the structure of other minerals. There is growing concern over the economical availability of REE because of their diverse and expanding...

-This paper presents the design and development of a Geochemical Expert System prototype (GES) for analyzing solution-mineral interactions in nature. The emphasis is placed on expert system design and knowledge representation. One of the most challenging and research-intensive steps was the identification of the key geochemical characteristics that would enable the expert system to identify sal...

Abstract Over the past two decades, a significant number of discoveries ancient zircon xenocrysts in ocean-floor magmatic rocks have been reported. These findings provide compelling evidence for presence continental crust within young oceanic lithosphere. Almost all finds are from Mid-Atlantic Ridge. For other localities, however, similar data very limited. This report presents first age determ...

This study aims to handle an integrated evaluation of soil and stream sediment geochemical data evaluate source apportionment establish threshold variations for Fe, Al, 20 selected Potentially Toxic Elements (PTE) in the Parauapebas River Basin (PB), Eastern Amazon. The set used this is from Itacaiúnas Geochemical Mapping Background Project (ItacGMBP), which collected 364 surface (0–10 cm) samp...

salafchegan-khorhe volcanic rocks are exposed within urumieh-dokhtar magmatic belt. different kinds of volcanic and subvolcanic rocks of calc-alkaline to alkaline character have been reported throughout this magmatic belt. since, isotopic investigations are very useful for detection of magma petrogenesis and because no isotopic studies have been done in this area, so a geochemical and isotopic ...

Multicomponent contaminant transport models in groundwater are typically based on assumptions of local geochemical equilibrium on the grid scale. In heterogenous systems there may be significant coupling between transport processes and geochemical equilibrium at smaller than grid block scale. When these processes are upscaled to grid scale, geochemical evolution may take on a kinetic character....