Lithospheric memory of subduction in mantle pyroxenite xenoliths from rift-related basalts
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DOI: 10.1016/j.epsl.2020.116365
Abstract: Abstract Petrological and geochemical studies have revealed the contribution of garnet pyroxenites in basalt petrogenesis. However, whether primary mantle melts are produced with such signature or acquired it subsequently remains somewhat controversial. We here integrate… read more here.
Keywords: lithospheric memory; subduction; rift related; pyroxenite xenoliths ... See more keywords
Phanerozoic lower crustal growth from heterogeneous mantle beneath the North China Craton: Insights from the diverse Hannuoba pyroxenite xenoliths
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DOI: 10.1016/j.lithos.2018.11.001
Abstract: Abstract Though many models of continental crustal growth rely on the assumption that juvenile crust is derived from depleted mantle of fairly uniform composition, mafic magmas derived from the mantle – potential candidates for newly… read more here.
Keywords: crustal growth; growth; china craton; north china ... See more keywords
Diverse origins of pyroxenite xenoliths from Yangyuan, North China Craton: implications for the modification of lithosphere by magma underplating and melt-rock interactions
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DOI: 10.1016/j.lithos.2020.105680
Abstract: Abstract We present detailed major-, trace-element and Sr-Nd-Mg isotopic geochemistry for a suite of pyroxenite xenoliths entrained in Oligocene basalts in Yangyuan county, North China Craton, to reveal their origins and to further constrain the… read more here.
Keywords: diverse origins; type pyroxenites; pyroxenite xenoliths; origins pyroxenite ... See more keywords
High-Alumina Pyroxenite Xenoliths from Quaternary Basalt of Spitsbergen Island: Evidence for Continental Crust Delamination
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DOI: 10.1134/s1028334x19040123
Abstract: The origin of spinel–garnet pyroxenite from xenoliths in Quaternary basaltoids of Spitsbergen Island (Svalbard Archipelago) is discussed. The rocks have a high concentration of Al2O3 and MgO and low Cr. The primary magmatic association Spl–Opx–Cpx… read more here.
Keywords: spitsbergen island; xenoliths quaternary; high alumina; crust ... See more keywords