We present a high-resolution in situ study of oxygen and boron isotopes measured tourmaline from the world-class San Rafael Sn (–Cu) deposit (Central Andean tin belt, Peru) aiming to trace major fluid processes at magmatic-hydrothermal transition leading precipitation cassiterite. Our results show that late-magmatic pre-ore hydrothermal has similar values δ18O (from 10.6‰ 14.1‰) δ11B −11.5‰ −6....

The Kings-Kaweah ophiolite belt of the southwestern Sierra Nevada Foothills was generated in two pulses of mid-oceanic-ridge basalt (MORB) magmatism. The first was in the Early Ordovician, which resulted in the generation of a complete abyssal crust and upper mantle section. The crustal section was rendered from convecting mantle whose Nd, Sr, and Pb isotopic systematics lie at the extreme end ...

Rocks exposed west of the Coast Plutonic Complex in southern southeast Alaska form an imbricate thrust belt that overprints the tectonic boundary between two of the largest allochthonous crustal fragments in the North American Cordillera, the Insular and Intermontane composite terranes. In the Alexander terrane (Insular composite terrane), lower Paleozoic metavolcanic and metasedimentary rocks ...

Based on the isotope-geochronological (zircons, U-Pb method), petrogeochemical, and structural petrologic data, following paper provides a detailed description of characteristics Late Paleozoic basic granitoid magmatism in eastern part Kaakhem magmatic area (Eastern Tuva). During formation Shivey alkaline-granitoid Chadal gabbroid massifs period 292–283 Ma, there were revealed two stages contra...

The Chakabeishan (CKBS) deposit is the first pegmatite-type Li-Be discovered in eastern North Qaidam Tectonic Belt (NQTB) of Tibetan Plateau. correct understanding its petrogenesis and precise determination formation age are great significance for further regional prospecting discovery new economically valuable rare-metal deposits. Therefore, a systematic study texture, major-element compositio...

As relics of oceanic lithosphere, ophiolites exposed in the East Kunlun region are crucial for deciphering evolution from Proto-Tethys to Paleo-Tethys. Two ophiolite belts have been recognized Orogenic Belt: northern Heishan-Dagele-Qingshuiquan Ophiolite Belt and southern Muzitag-A’nyemaqen Belt. Most basaltic rocks belt show apparent geochemical features enriched mid-ocean ridge basalts, with ...

The Orkhon-Selenge Belt is a Late Permian to Early Triassic volcanic plutonic belt located in northern Mongolia and part of the Central Asian Orogenic Belt. Selenge Complex, which Belt, key area for studying tectonic magmatic evolution This study aims contribute understanding geodynamic by investigating petrology, geochemistry geochronology rocks region. Our results indicate that intrusive were...

Based on the analysis of known geodynamic models that explain processes in various settings Meso-Cenozoic stages development continental margins and tectonic-magmatic events accompanying these processes, as well basis our own data obtained a result many years research axial structure Central Asian Fold Belt-Mongol-Okhotsk orogenic belt influence interdependent structures post-Mesozoic evolution...