Deciphering the zircon Hf isotope systematics of Eoarchean gneisses from Greenland: Implications for ancient crust-mantle differentiation and Pb isotope controversies
Sign Up to like & getrecommendations! Published in 2019 at "Geochimica et Cosmochimica Acta"
DOI: 10.1016/j.gca.2019.01.041
Abstract: Abstract We report a Hf isotope investigation of zircons from four Eoarchaean orthogneisses from the Godthabsfjord region of southern West Greenland by laser ablation MC-ICPMS, to elucidate crust-mantle differentiation processes in the early Earth. Zircon… read more here.
Keywords: isotope; zircon; systematics; crust mantle ... See more keywords
Metasomatism of the crust-mantle boundary by melts derived from subducted sedimentary carbonates and silicates
Sign Up to like & getrecommendations! Published in 2019 at "Geochimica et Cosmochimica Acta"
DOI: 10.1016/j.gca.2019.06.033
Abstract: Abstract Substantial quantities of sediments are known to enter the deep lithosphere at subduction zones, but the extent to which sediments melt and the process involved in sediment contribution to the deep lithosphere are inadequately… read more here.
Keywords: metasomatism crust; sedimentary carbonates; deep lithosphere; crust mantle ... See more keywords
Post-collisional potassic rocks in Western Kunlun, NW Tibet Plateau: Insights into lateral variations in the crust-mantle structure beneath the India-Asia collision zone
Sign Up to like & getrecommendations! Published in 2020 at "Lithos"
DOI: 10.1016/j.lithos.2020.105645
Abstract: Abstract The collision between India and Asia created the most significant orogenic system of the Cenozoic. Although numerous collision-related igneous rocks formed, many post-collisional rocks were emplaced but have received less attention. Recently, geophysical investigations… read more here.
Keywords: lateral variations; post collisional; crust mantle; rocks western ... See more keywords
Late Neoarchean crust-mantle geodynamics : evidence from Pingquan Complex of the Northern Hebei Province, North China Craton
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DOI: 10.1016/j.precamres.2017.06.007
Abstract: Abstract A late Neoarchean intra-oceanic arc along the northwestern margin of Eastern Block (EB), North China Craton, provides important insights into the nature of Archean mantle sources and crust-mantle geodynamics. The Pingquan Complex and the… read more here.
Keywords: mantle; arc; crust mantle; pingquan complex ... See more keywords
Crust-mantle geodynamic origin of ~2.7 Ga granitoid diversification in the Jiaobei terrane, North China Craton
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DOI: 10.1016/j.precamres.2020.105821
Abstract: Abstract The crust-mantle geodynamic origin of global late Archean granitoid diversification remains enigmatic. A series of early Neoarchean diversified granitoids were newly identified in the Jiaobei terrane of the North China Craton, including ~2749–2739 Ma Na-rich… read more here.
Keywords: granitoid diversification; jiaobei terrane; crust mantle; quartz dioritic ... See more keywords
Lithosphere architecture characterized by crust–mantle decoupling controls the formation of orogenic gold deposits
Sign Up to like & getrecommendations! Published in 2022 at "National Science Review"
DOI: 10.1093/nsr/nwac257
Abstract: ABSTRACT This study, via combined analysis of geophysical and geochemical data, reveals a lithospheric architecture characterized by crust–mantle decoupling and vertical heat-flow conduits that control orogenic gold mineralization in the Ailaoshan gold belt on the… read more here.
Keywords: orogenic gold; crust mantle; mantle decoupling; gold ... See more keywords
Discrimination of Crust and Mantle Deformation from Differential SKS-Ps Splitting Analysis, Iranian Plateau
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DOI: 10.1134/s0016852119030063
Abstract: We present a new technique for shear wave splitting analysis in anisotropic mantle by combining the splitting analysis of Ps phases in receiver functions and SKS splitting analysis. Ps converted phases reveal evident variations in… read more here.
Keywords: mantle deformation; sks splitting; discrimination crust; crust mantle ... See more keywords
Carbon and nitrogen isotopes and mineral inclusions in diamonds from chromitites of the Mirdita ophiolite (Albania) demonstrate recycling of oceanic crust into the mantle
Sign Up to like & getrecommendations! Published in 2019 at "American Mineralogist"
DOI: 10.2138/am-2019-6751
Abstract: Abstract Geophysical investigations and laboratory experiments provide strong evidence for subduction of ancient oceanic crust, and geological and mineralogical observations suggest that subducted oceanic crust is recycled into the upper mantle. This model is supported… read more here.
Keywords: mantle; crust; mirdita ophiolite; crust mantle ... See more keywords