The degree of early Archaean terrestrial differentiation into mantle and crust is long debated. A number studies rely on bulk rock Hf Nd isotope data to gain further insight. Here we present Hf-Nd from two igneous basements suites Barberton Mountain Land, namely a tonalite-trondhjemite-granodiorite (TTG) granodiorite-granite-monzogranite (GGM) suite decipher formation its timing in the Archaean...

compositions of biotite from three different rock types of mashhad granitoids, i.e., granodiorite, monzogranite and leucogranite in ne of iran have been documented by electron microprobe and wet chemistry for fe3+ and fe2+. mashhad granitoids have been geochronologically and petrologically grouped into g1 and g2 phases. microprobe data show that the total fe contents in biotite from g2 leucogra...

The recently discovered Daping tungsten deposit is located about 25 km north of Tongcheng County, Hubei Province, in the northern margin Sijiapu granite Mufushan composite batholith. ore body produced northeast-oriented greisenization and quartz vein, belongs to greisen-vein-type scheelite deposit. resources W have a value 7935 t average grade 0.201% WO3. Based on mineralogical petrographic stu...

Understanding of the mechanism between magma sources and metallogeny is still vague. As an important gold molybdenum producing area, Chifeng–Chaoyang district, located at northern margin North China Craton (NCC), a key place for this issue. New geochemical data relating to Taijiying gold-deposit-related granites are presented. These data, coupled with previous studies, used explore relationship...

Abstract. Lithospheric-scale fault systems control the large-scale permeability in Earth's crust and lithospheric mantle, its proper recognition is fundamental to understand geometry distribution of mineral deposits, volcanic plutonic complexes geothermal systems. However, their manifestations at current surface can be very subtle, as many cases they are oriented oblique continental margin axis...

Post-orogenic extension in back-arc regions is classically associated with metamorphic core complexes (MCCs) cored exhumed rocks and granitic intrusions interacting low-angle detachments. When additional heat provided by the advected asthenosphere below extending region, for instance above slab tears, high-temperature migmatite-cored domes composite are emplaced whose geometry kinematics of emp...

The East Kunlun Orogen (EKO) in the northern Tibetan Plateau records two continental collisional orogenic events and magmatism early Paleozoic Mesozoic. However, possible magmatic additions to crust growth of EKO different tectonic stages orogeny have been overlooked. Three phases plutons from Xiangride-Kuhai area east chosen for detailed investigation results are reported here. oldest suite (S...

The Canadian Superior Province has become one of the key test pieces to discuss tectonic processes and mechanisms crustal growth in Late Archean. consists a >2.8 Ga proto-cratonic core intruded by voluminous arc-like plutons surrounded series narrow, elongate ca. 2.8–2.7 juvenile belts, also referred as terranes or domains. seem wrap around generally young outward, but kinematics geodynamic cau...

Abstract Filo del Sol is a composite porphyry-epithermal deposit, straddling the frontier between Argentina and Chile at latitude 28°29′ S, that has attracted great deal of recent attention because several drill intersections in excess 1 km long with unusually high Cu, Au, Ag grades. The deposit part 8.5-km-long, N- to NE-trending alignment porphyry high-sulfidation epithermal centers, which, t...