The study area is located in Ardabil province the northeast of Meshkinshahr city. More than 200 small and large Eocene-age dykes form outcrops this area. Laser ablation–inductively coupled plasma–mass spectrometry (LA-ICP-MS) U–Pb zircon analyses yield a consistent age 44.3 ± 1.8 Ma for dyke swarms. These include tephritic, andesitic basaltic compositions, show enrichment LREEs (relative to HRE...

Recycled oceanic crust, with or without sediment, is often invoked as a source component of continental and oceanic alkaline magmas to account for their trace-element and isotopic characteristics. Alternatively, these features have been attributed to sources containing veined, metasomatized lithosphere. In melting experiments on natural amphibole-rich veins at 1.5 gigapascals, we found that par...

Archean greenstone belts are renowned for their Au endowment. Gold can be associated with orogenic style of mineralization and diorite-hosted Au-Cu disseminated sulfides interpreted as a porphyry mineralization. The Regnault project, located in the Frotet–Evans belt (Superior craton), is structurally-controlled an unclear metallogenic model. aim this study to evaluate fertility granodiorite-dio...

This article discusses the geochemical and petrological evolution of São José do Campestre granite complex (SJCgr), last Neoarchean plutonic event so far described in massif NE Brazil. We report field, petrographic, zircon U-Pb dating, whole rock mineral chemistry for representative SJCgr samples. Laser ablation data indicate that emplacement took place at 2664 ± 13 Ma. The rocks comprising hav...

Abstract We present new Sr-Nd-Pb-Hf isotopic data on mafic lavas from the Sivas, Develida?, Erciyes, and Erkilet volcanic complexes in central Turkey Tendürek eastern to evaluate mantle sources for volcanism context of geodynamic evolution Anatolian microplate. Early Miocene through Quaternary Western Anatolia latest activity Central were dominated by contributions two distinct source regions: ...

• The gabbro was originated from metasomatized lithospheric mantle. hornblende formed mixing of asthenosphere and slab breakoff propagated eastward under the Lhasa terrane in Paleocene-Eocene. Past geodynamic events can be reconstructed using spatial temporal patterns geochemical variability igneous rocks. Here we apply this principle to define timing geometry Neo-Tethyan after India-Asia colli...

The Tibetan Plateau is a key region to understand the evolution of Tethys Oceans. To better constrain tectonic Proto-Tethys Ocean on western margin Yangtze plate, we present an integrated petrography, geochemistry, and zircon U-Pb-Lu-Hf isotope study newly recognized early Silurian gabbro serpentinite rocks from eastern Yidun terrane Plateau. Zircon U-Pb dating yields Early age 438.2 ± 2.8 Ma. ...