Major and trace element data are presented for Quaternary basalts from Butajira-Kibet area, close to the western escarpment of Central Main Ethiopian Rift investigate petrogenetic processes involved nature mantle source compositions. The indicate that mildly alkaline characterized by moderate high contents MgO (6.85-9.00 wt. %) TiO2 (2.40-2.92 %). In primitive mantle-normalized multi-element di...

Kimberlite magmatism occurs as a result of volatile fluxed melting the convecting upper mantle underlying cratonic lithospheric regions. During passage to Earth's surface, proto-kimberlite magma can interact with, and assimilate, variably enriched producing hybrid melts consisting asthenospheric components including contributions from metasomatic domains. The halogen elements (F, Cl, Br, I) chl...

The relatively stable conditions of the sea ice cover in Antarctic, observed for almost 40 years, seem to be changing recently. Therefore, it is essential provide thickness (SIT) and volume (SIV) estimates order anticipate potential multi-scale changes Antarctic ice. For that purpose, main objectives this work are: (1) assess a new freeboard, altimetry dataset over 2003–2020 (2) identify first ...

The decay of (187)Re to (187)Os (with a half-life of 42 billion years) provides a unique isotopic fingerprint for tracing the evolution of crustal materials and mantle residues in the convecting mantle. Ancient subcontinental mantle lithosphere has uniquely low Re/Os and (187)Os/(188)Os ratios due to large-degree melt extraction, recording ancient melt-depletion events as old as 3.2 billion yea...

The Upper Cretaceous Ganj complex, a part of the Jazmurian ophiolitic belt, is located on the western boundary of Jazmurian depression and separated from Kahnuj ophiolitic complex by north-south trending Jiroft fault. The complex consists of lava flows, pillow lavas, acidic plutonic and sedimentary rocks which are intruded by northwest-southeast trending dykes. It does not resemble a classical ...

Pleistocene basaltic lava flows, consisting of trachybasalt and basaltic trachyandesite, cover an area north-northwest of Shahre-Babak in southeastern Iran. The whole rock chemistry indicates that the lavas are dominantly alkaline and mildly calc-alkaline. Variation diagrams of SiO2 with major and trace elements are consistent with fractional crystallization processes involving olivine, pyroxen...