Search results for "Kamafugite"

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Strongly SiO2-undersaturated, CaO-rich kamafugitic Pleistocene magmatism in Central Italy (San Venanzo volcanic complex) and the role of shallow dept…

2020

The Pleistocene (~460–265 ka) San Venanzo volcanic complex belongs to the IAP (Intra-Apennine Province) in central Italy, which comprises at least four small Pleistocene monogenetic volcanoes plus several unrooted pyroclastic deposits with peculiar mineralogical and whole-rock chemical compositions. San Venanzo products are strongly SiO2-undersaturated, CaO- and MgO-rich and show ultrapotassic serial character. The relatively common occurrence of calcite in the pyroclastic rocks and the overall high CaO content are interpreted in literature as primary mineral. The main rock facies at San Venanzo are calcite-rich scoria and lapilli tuffs, with minor massive lava flows, and a rare pegma…

010504 meteorology & atmospheric sciencesultrapotassicGeochemistryPyroclastic rockCarbonatite; Kamafugite; mantle plumes; noble gases; Roman comagmatic region; subduction; ultrabasic; ultrapotassicengineering.material010502 geochemistry & geophysicsKamafugite01 natural sciencesUltramafic rockCarbonatiteultrabasicRoman comagmatic region0105 earth and related environmental sciencesPeridotitegeographygeography.geographical_feature_categoryFractional crystallization (geology)Olivinemantle plumesVolcanic rockIgneous rocknoble gasesengineeringGeneral Earth and Planetary SciencesLeucitesubductionGeology
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