Seismic airgun exploration of continental crust structures
Sign Up to like & getrecommendations! Published in 2017 at "Science China Earth Sciences"
DOI: 10.1007/s11430-016-9096-6
Abstract: The active sources generate seismic waves transmitting through the deep underground and can be used to image high-resolution subsurface structures. Therefore, an appropriate seismic source is the key factor to active source exploration. In order… read more here.
Keywords: continental crust; seismic waves; exploration; source ... See more keywords
On the petrogenesis of Paleoarchean continental crust: U-Pb-Hf isotope and major-trace element constraints from the Bastar Craton, India
Sign Up to like & getrecommendations! Published in 2021 at "Chemical Geology"
DOI: 10.1016/j.chemgeo.2021.120337
Abstract: Abstract Combined geochronological and (isotope) geochemical investigations of tonalite-trondhjemite-granodiorite (TTG) suites, which dominate Archean cratons, provide constraints on the sources and petrogenetic processes that gave rise to the Earth's early continental crust. In situ U-Pb… read more here.
Keywords: continental crust; isotope; petrogenesis; trace ... See more keywords
Deep entrapment of buoyant magmas by orogenic tectonic stress: Its role in producing continental crust, adakites, and porphyry copper deposits
Sign Up to like & getrecommendations! Published in 2021 at "Earth-Science Reviews"
DOI: 10.1016/j.earscirev.2021.103744
Abstract: Abstract Arc-basaltic melts of typical hydration state (≥ 2 wt% H2O) are buoyant relative to all common crustal igneous rock types and may pass adiabatically from a mantle source through continental crust directly to shallow depths… read more here.
Keywords: continental crust; crust; tectonic stress; stress ... See more keywords
Incipient subduction at the contact with stretched continental crust: The Puysegur Trench
Sign Up to like & getrecommendations! Published in 2019 at "Earth and Planetary Science Letters"
DOI: 10.1016/j.epsl.2019.05.044
Abstract: A seismic Benioff zone and plate kinematics show Puysegur Trench south of New Zealand transitioning to subduction. Because the local structure and its influence on subduction initiation is poorly understood, we conducted a seismic survey… read more here.
Keywords: continental crust; crust; puysegur trench; subduction ... See more keywords
Repeated magmatic buildup and deep “hot zones” in continental evolution: The Cadomian crust of Iran
Sign Up to like & getrecommendations! Published in 2020 at "Earth and Planetary Science Letters"
DOI: 10.1016/j.epsl.2019.115989
Abstract: Abstract The generation and differentiation of continental crust by arc magmatism is strongly influenced by episodes of high magmatic flux (“flare-ups”). Magmatic flare-ups encourage the development of deep crustal hot zones where magmatic differentiation and… read more here.
Keywords: continental crust; crust; cadomian crust; crust iran ... See more keywords
Barium isotopic composition of the upper continental crust
Sign Up to like & getrecommendations! Published in 2018 at "Geochimica et Cosmochimica Acta"
DOI: 10.1016/j.gca.2018.05.004
Abstract: Abstract The upper continental crust (UCC) is an important reservoir of Ba within the Earth. We report high precision (≤±0.05‰, 2SD) Ba isotopic data for 71 samples (including granites, granodiorites, loess, glacial diamictites, and river… read more here.
Keywords: continental crust; isotopic composition; 137 134ba; composition upper ... See more keywords
How mafic was the Archean upper continental crust? Insights from Cu and Ag in ancient glacial diamictites
Sign Up to like & getrecommendations! Published in 2020 at "Geochimica et Cosmochimica Acta"
DOI: 10.1016/j.gca.2019.08.002
Abstract: Abstract The concentrations of Cu and Ag, both insoluble chalcophile elements, can be used to place tight constraints on the proportion of basalts in the upper continental crust (UCC) through time via analyses of fine-grained… read more here.
Keywords: continental crust; crust; upper continental; glacial diamictites ... See more keywords
Exhumation of subducted continental crust along the arc region
Sign Up to like & getrecommendations! Published in 2020 at "Gondwana Research"
DOI: 10.1016/j.gr.2019.10.011
Abstract: Abstract The Kutna Hora crystalline complex (KHCC) in the Bohemian Massif is a HP/HT complex adjacent to the magmatic arc. It is dominated by migmatite, orthogneiss and granulite with bodies of eclogite and peridotite. The… read more here.
Keywords: continental crust; exhumation subducted; subducted continental; exhumation ... See more keywords
Nature and (in-)coherent metamorphic evolution of subducted continental crust in the Neoproterozoic accretionary collage of SW Mongolia
Sign Up to like & getrecommendations! Published in 2020 at "Geoscience frontiers"
DOI: 10.1016/j.gsf.2020.10.004
Abstract: Abstract In continental subduction complexes minor volumes of high-pressure mafic rocks (eclogites) often co-exist with much more abundant felsic (granitic) and metasedimentary rocks, which are vital for resolving the origin and metamorphic evolution of subducted… read more here.
Keywords: continental crust; evolution subducted; evolution; crust ... See more keywords
Melting of subducted continental crust: Geochemical evidence from Mesozoic granitoids in the Dabie-Sulu orogenic belt, east-central China
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Asian Earth Sciences"
DOI: 10.1016/j.jseaes.2017.03.038
Abstract: Abstract Syn-collisional and postcollisional granitoids are common in collisional orogens, and they were primarily produced by partial melting of subducted continental crust. This is exemplified by Mesozoic granitoids from the Dabie-Sulu orogenic belt in east-central… read more here.
Keywords: continental crust; mesozoic granitoids; sulu orogenic; china ... See more keywords
Transformation of juvenile Izu–Bonin–Mariana oceanic arc into mature continental crust: An example from the Neogene Izu collision zone granitoid plutons, Central Japan
Sign Up to like & getrecommendations! Published in 2017 at "Lithos"
DOI: 10.1016/j.lithos.2016.07.035
Abstract: Abstract Granitic rocks (sensu lato) are major constituents of upper continental crust. Recent reviews reveal that the average composition of Phanerozoic upper continental crust is granodioritic. Although oceanic arcs are regarded as a site producing… read more here.
Keywords: continental crust; arc; collision; granitoid plutons ... See more keywords