in the centeral iranian volcanic belt (civb), north-west of shahre-babak, in area of javazm, dehaj and khabr, about 20 plutonic porphyritic tonalitic to granodioritic masses (1-50 km2) are intruded into a varity of rock sequences from eocene to early miocene in age. tonalitic and granodioritic rocks are some part of dehaj-sardoieh belt and having early miocene age. the civb contains intrusive a...

Stikine Terrane arc rocks in the re,:ion host !;(m:ral copper-gold and copper-molybdenum ocnlwerlces (MINFILE 104 G and H). The volcrrnic strat.i,:raphy hosting these deposits is, however, poorly const:aimd. The Tatogga Lake project will attemp; to characterize individual deposits, desclibe their h a 1 and rcgictnal stratigraphic and structural settings, and deternme the ages of magmatism ...

The Tethyan Himalaya is the fourth metallogenic belt discovered to date within Tibetan Plateau and contains chromite, gold Sb–polymetallic mineralization. records a series of complex tectonic–magmatic events that include break-up, subduction, collision, detachment, obduction Eastern Gondwana continent, all which generated ideal conditions for ore formation. However, this area remains under-expl...

the lower to middle miocene chenar granitoid stock, a part of central iranian volcanic belt, is intruded into eocene volcano-sedimentary complex in northwestern kerman in south central iran. the chenar granitoid stock consists mainly of coarse to medium grain granodiorite and monzogranite with subordinate tonalite and syenogranite. alkali granites as aplitic veins and quartz dioritic dykes freq...

The evolution of the Tethys Ocean has received much research attention; however, timing and subduction mechanisms involved in closure Bangong-Nujiang Meso-Tethys remain poorly constrained. In this study, we present geological, geochronological, geochemical, zircon isotopic data from Cretaceous magmatic rocks combine these with previously published within central suture zone north-central Tibeta...

The morphology and distribution of volcanic edifices in terrains encodes the structure evolution underlying magma transport as well surface processes that shape landforms. How magmatic construction erosion interact on long timescales to sculpt these landscapes, however, remains poorly resolved. In Cascades arc, distributed mirror long-wavelength topography associated with crustal magmatism defi...

Fifteen andesite-dacite stratovolcanoes on the volcanic front of a single segment of the Andean arc show along-arc changes in isotopic and elemental ratios that demonstrate large crustal contributions to magma genesis. All 15 centers lie 90 km above the Benioff zone and 280 _+ 20 km from the trench axis. Rate and geometry of subduction and composition and age of subducted sediments and seafloor...