Petrology and geochemistry of dunites, chromitites and mineral inclusions from the Gaositai Alaskan-type complex, North China Craton: Implications for mantle source characteristics
The Gaositai complex is a typical Alaskan-type intrusion, emplaced in the northern margin of the North China Craton at about 280Ma. It is a concentrically zoned intrusion, with dunite in the core, rimmed by wehrlite, clinopyroxenite and hornblendite outwards. To understand the chemical compositions of the parent magma to the ultramafic complex, and thus that of the mantle source, we conduct petrological and geochemical studies on the dunite core and high-Mg clinopyroxene (cpx) inclusions in the...[Show more]
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