Abstract Reverse fractionation modeling considering energy-constrained assimilation-fractional crystallization is performed to estimate primary magma compositions, degree of crustal contamination, pressure–temperature equilibrium with mantle, and potential temperatures for the origin Paleoproterozoic (~ 2.37–1.88 Ga) basaltic dikes in central eastern Dharwar Craton sills volcanics adjoining Cud...

Abstract This study presents the new petrology and geochemistry data for comprehension of origin emplacement conditions Lolodorf mafic rocks whitin Nyong Complex. The meta-mafic consist fine-grained garnet (FGM) coarse-grained (CGM) presenting nearly similar mineral composition. They are made up quartz, plagioclase, orthopyroxene, clinopyroxene, amphibole, opaques, apatite rutile. also present ...

The northern Main Ethiopian Rift (MER) in East Africa is considered a region of incipient oceanic spreading, with Miocene border faulting now largely abandoned at the expense magmatic extension Wonji Fault Belt (WFB). However, whether began when lithosphere was still-thick, or heavily stretched, unknown. Galema range, linear Pliocene dike swarm parallel to eastern margin present-day central MER...

As part of the Variscan orogen, Pyrenean realm has undergone several rifting episodes, starting from Permian-Carboniferous post-orogenic collapse and culminating with mid-Cretaceous lithospheric mantle exhumation. We present Pressure-Temperature-time-deformation (P-T-t-d) evolution tonalite bodies (here described for first time) intruded in late Carboniferous high pressure (HP) granulites Salei...

In the Western Sangilen (Tuva–Mongolia microcontinent, Central Asian Orogenic Belt, Russia) rare mineral ferrohögbomite-2S2N, for first time, was found in a deep-seated contact aureole of early Paleozoic Bayan-Kol gabbro-monzodiorite intrusion. The rocks are diatexites roof pendant, where metamorphics gabbronorite. Diatexites formed as result strong melting and desilication quartz-bearing kyani...

We report new petrographic and geochemical observations on magmatic sulfides occurring in different enclave types, including hornblende and/or clinopyroxene-rich cumulates, the host lavas, Nisyros (South Aegean volcanic arc). discuss our findings context of pre-existing petrological thermobarometry studies. Our results indicate that become less abundant Cu-richer (Cu median values) with magma d...