The 2.95–2.82 Ga quartzofeldspathic gneisses and granitoids in the Bighorn, western Owl Creek, and northeastern Wind River uplifts in the central Wyoming Province include low-K tonalite–trondhjemite–granodiorite (TTG) and high-K granodiorite–granite (GG) rocks. Both types of granitoids were intruded contemporaneously, although TTGs are more abundant in the older gneisses. The TTG suite consists...

The Paleocene-Eocene Cerro Munro pluton, to the east of North Patagonian Batholith (NPB), is a tonalitic intrusion emplaced as shallow, small, sub-circular tonalite-granodiorite body hosting abundant co-magmatic mafic microgranular enclaves (MME). Besides, intrusive crosscut by radial porphyritic dikes and has been related andesitic, dacitic rhyolitic dikes, lava flows ignimbrites cropping out ...

The Alxa Block is an important component of the North China Craton, but its metamorphic basement has been poorly studied, which hampers understanding and Craton. In this study, we conducted geochronological geochemical studies on three TTG (tonalite–trondhjemite–granodiorite) gneisses one granitic gneiss exposed in Langshan area eastern to investigate their crustal evolution. zircon U-Pb dating...

The debate on the role of vertical versus horizontal tectonism in Archean cratons is intimately linked to initiation plate tectonics. dome-and-keel architecture has been considered as a consequence tectonism. Although such structural pattern documented some Mesoarchean and older cratons, Kaapvaal Pilbara whether it also occurs Neoarchean poorly constrained. Determining kinematics, evolution, ti...

In gold-endowed greenstone belts, ore bodies generally correspond to orogenic gold systems (OGS) formed during the main deformation stage that led craton stabilization (syntectonic period). Most OGS deposits postdate and locally overprint magmatic-hydrothermal systems, such as Au-Cu porphyry mostly magmatic (synvolcanic period) polymetallic intrusion-related (IRGS) of syntectonic period. Porphy...

The preserved Archean continental crust is dominantly comprised of tonalite-trondhjemite-granodiorite (TTG) suites associated with less abundant low-grade greenstone belts. exact processes that form TTGs, as well the source rock they are derived from, difficult to constrain from sparse geological record. However, studies show water-present partial melting metamorphosed basalt at temperatures 75...

three intrusive granitoid bodies from northwest saveh, central iran, are embedded in volcanic sedimentary rocks of the eocene,forming isolated small outcrops: khalkhab quartz monzodioritic units (sio2: ~52-57 wt %) to the northwest, neshveh granodioriticunits (sio2: ~62-71 wt %) to the northeast, and selijerd granodioritic units (sio2: ~63-69 wt %) to the southeast. the khalkhab unit iscomposed...

The Huizachal–Peregrina Anticlinorium in northeastern Mexico comprises a wide variety of Precambrian and Paleozoic basement units. In this work, Silurian-to-Permian unmetamorphosed siliciclastic successions (i.e., Cañón de Caballeros, Vicente Guerrero, Del Monte, Guacamaya formations) forming the Tamatán Group is described; group overlies Novillo metamorphic complex, which northernmost exposed ...

Three intrusive granitoid bodies from northwest Saveh, central Iran, are embedded in volcanic sedimentary rocks of the Eocene,forming isolated small outcrops: Khalkhab quartz monzodioritic units (SiO2: ~52-57 wt %) to the northwest, Neshveh granodioriticunits (SiO2: ~62-71 wt %) to the northeast, and Selijerd granodioritic units (SiO2: ~63-69 wt %) to the southeast. The Khalkhab unit iscomposed...