Incipient boninitic arc crust built on denudated mantle: the Khantaishir ophiolite (western Mongolia)
Sign Up to like & getrecommendations! Published in 2017 at "Contributions to Mineralogy and Petrology"
DOI: 10.1007/s00410-017-1415-4
Abstract: The ~ 570 Ma old Khantaishir ophiolite is built by up to 4 km harzburgitic mantle with abundant pyroxenites and dunites followed by ~ 2 km of hornblende-gabbros and gabbronorites and by a ~ 2.5 km thick volcanic unit composed of a dyke + sill complex capped… read more here.
Keywords: crust; arc crust; khantaishir; denudated mantle ... See more keywords
SHRIMP U-Pb ages of zircons from mafic granulites of the Eastern Ghats Belt, SE India: Implications for the evolution of the palaeoproterozoic arc crust
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Asian Earth Sciences"
DOI: 10.1016/j.jseaes.2019.03.019
Abstract: Abstract We determined SHRIMP U-Pb ages of zircons from three mafic granulite samples of the polymetamorphosed, multiply-deformed Kondapalli-Ongole domain of the Eastern Ghats Belt (EGB), SE India. Our goals are: (1) to evaluate the origin… read more here.
Keywords: ghats belt; shrimp ages; ages zircons; mafic granulites ... See more keywords
Melt inclusions in arclogitic xenoliths constrain the genesis of the lower continental arc crust beneath the Northern Volcanic Zone, Colombia
Sign Up to like & getrecommendations! Published in 2023 at "Journal of Petrology"
DOI: 10.1093/petrology/egad038
Abstract: Volcanic arcs above subduction zones are thought to be the principal locations where juvenile magmatic crust forms and is refined to become continental crust with an andesitic composition. During this refinement mechanism, the formation of… read more here.
Keywords: melt inclusions; arc; arc crust; arclogitic xenoliths ... See more keywords