Results 31 to 40 of about 5,875 (167)

Cumulate causes for the low contents of sulfide-loving elements in the continental crust [PDF]

open access: yes, 2017
Despite the economic importance of chalcophile (sulfide-loving) and siderophile (metal-loving) elements (CSEs), it is unclear how they become enriched or depleted in the continental crust, compared with the oceanic crust.
A Gale   +51 more
core   +1 more source

Intermittent Brittle and Ductile Deformation as Recorded by Dating of Ultramylonites and Pseudotachylytes in Extending Continental Crust (Ivrea‐Verbano Zone, Italy)

open access: yesTerra Nova, Volume 37, Issue 5, Page 277-286, October 2025.
ABSTRACT Mylonites and pseudotachylytes play a crucial role in defining the rheology of extending continental crust. In this context, determining the age of brittle‐ductile deformation is fundamental to understanding the rifting evolution stages. Here, we investigate the Premosello Shear Zone, an extensional structure of the Ivrea‐Verbano lower crust ...
Stefania Corvò   +3 more
wiley   +1 more source

Fertility of crustal rocks during anatexis [PDF]

open access: yes, 2017
After many years of systematic experimental investigations, it is now possible to quantify the conditions for optimum fertility to melt production of most common crustal rock types as functions of temperature and to about 30 kbar pressure.
Thompson, Alan Bruce
core  

Crust‐Mantle Interaction During Continental Deep Subduction: Evidence From Light Mo Isotopes in Post‐Collisional Mafic Igneous Rocks From the East Kunlun Orogen

open access: yesGeochemistry, Geophysics, Geosystems, Volume 26, Issue 8, August 2025.
Abstract It is intriguing whether and how crust‐mantle interaction would proceed in continental subduction zones. Here, we report zircon U‐Pb ages and Hf isotopes, major and trace elements, and Sr‐Nd‐Mo isotopes for Late Paleozoic mafic igneous rocks from the East Kunlun orogen (EKO).
Qing‐Chen Yang   +4 more
wiley   +1 more source

Carbon geodynamic cycle in continental collision zones: An example from East Gondwana [PDF]

open access: yes, 2016
第4回極域科学シンポジウム個別セッション:[OG] 地圏11月15日(金) 統計数理研究所 3階セミナー室2 ...

core   +1 more source

Liquid segregation parameters from amphibolite dehydration melting experiments [PDF]

open access: yes, 1995
We have experimentally obtained some of the parameters necessary for understanding the segregation of silicate liquid from amphibolite undergoing dehydration melting at 1 GPa and 750–1000°C. The solidus for this calcic amphibolite (68% Mg-Hb, 32% Pl (An_(
Wolf, Michael B., Wyllie, Peter J.
core   +1 more source

Rapid Incorporation of Metasediments Into Lower Crust of the Gangdese Magmatic Arc, Southern Tibet

open access: yesGeochemistry, Geophysics, Geosystems, Volume 26, Issue 7, July 2025.
Abstract Deeply exhumed crustal terranes of continental arcs worldwide commonly contain metasedimentary components, but the nature of these lithologies and how they became incorporated into the lower crust are not fully understood. Here, we present petrological, geochemical and geochronological data from exhumed deep‐crustal metapelites and ...
Sheng‐Kai Qin   +5 more
wiley   +1 more source

Syn-orogenic high-temperature crustal melting: Geochronological and Nd-Sr-Pb isotope constraints from basement-derived granites (Central Damara Orogen, Namibia) [PDF]

open access: yes, 2014
Major and trace element and Nd, Sr and Pb isotope data from c. 550 Ma-old gray granites and c. 510 Ma-old red leucogranites of the high-grade central part of the Damara orogen (Namibia) indicate a dominantly deep crustal origin.
Barnes   +61 more
core   +1 more source

Late Cretaceous Extensional Collapse Driven by Delamination in Central Tibet Prior to India‐Asia Collision

open access: yesGeochemistry, Geophysics, Geosystems, Volume 26, Issue 7, July 2025.
Abstract A diverse range of dikes in the western Lhasa–Qiangtang collision zone provides constraints on the evolution of post‐collisional tectonomagmatic processes and the growth of the Tibetan Plateau. We report geochronological, geochemical, and Sr–Nd–Hf isotopic data for granitic dikes in the Rebang area of the Northern Lhasa Block, northern Tibet ...
Yao Xiao   +6 more
wiley   +1 more source

Supporting Information-text for diverse anatexis in MCTZ

open access: yes, 2021
The supporting information files provide hand photos (Figure S1) and X-ray mapping of garnet and melt inclusions (Figure S2). Geochemical characteristics of minerals (Figure S3 & S4),migmatites and gneisses (Figure S5) as well as leucosomes (Figure S6 to S8) are shown in Figure S3 to S8.
Liu, Shuaiqi   +5 more
openaire   +1 more source

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