SIMS U-Pb dating of rutile within eclogitic xenoliths in the Early Cretaceous adakitic rocks of the Xuzhou-Huaibei area, China: Constraints on the timing of crustal thickening of the eastern North China Craton

熊伯琴,; 许文良,; 李秋立,; 杨德彬,; 周群君,

doi:10.1007/s11430-014-5043-9

Cited by 15 publications

(1 citation statement)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The xenoliths define peak-metamorphic P-T conditions of >1.5 GPa and 800-1060°C. Eclogite zircon and rutile yield ages of 209-132 Ma, similar to those of their host rocks and providing a genetic link with adakitic intrusions (e.g., Xu et al, , 2009Xiong et al, 2015). (2) Eclogite xenoliths hosted in kimberlites of the Siberian and South African Archean (3.5-2.5 Ga) cratons (e.g., MacGregor and Manton,1986;Ireland et al, 1994;Jacob et al, 1995;Beard et al, 1996;Rollinson, 1997;Snyder et al, 1997;Rudnick et al, 2000).…”

Section: Genetic Connection Between Eclogitic Xenoliths and Generatiomentioning

confidence: 98%

Adakitic rocks at convergent plate boundaries: Compositions and petrogenesis

Wang

Hao

Zhang

et al. 2020

Sci. China Earth Sci.

View full text Add to dashboard Cite

Adakitic rocks are intermediate-acid magmatic rocks characterized by enrichment in light rare-earth elements, depletion in heavy rare-earth elements, positive to negligible Eu and Sr anomalies, and high La/Yb and Sr/Y ratios. Cenozoic adakitic rocks generated by partial melting of subducted oceanic crust (slab) under eclogite-facies conditions (i.e., the original definition of "adakite") occur mainly in Pacific Rim volcanic arcs (intra-oceanic, continental, and continental-margin island arcs), whereas those generated by partial melting of thickened lower crust occur mainly in Tethyan Tibetan collisional orogens. In volcanic arcs, adakitic melts derived from the melting of subducted oceanic crust metasomatize the mantle wedge to form a unique rock suite comprising adakite-adakite-type high-Mg andesite-Piip-type high-Mg andesite-Nb-rich basalt-boninite. This suite differs from the basalt-andesite-dacite-rhyolite suite formed from mantle wedge metasomatized by fluids derived from subducted oceanic crust. Previously published data indicate that partial melting of mafic rocks can generate adakitic magmas under pressure, temperature, and hydrous conditions of 1.2-3.0 GPa, 800-1000°C, and 1.5-6.0 wt.% H 2 O, respectively, leaving residual minerals of garnet and rutile with little or no plagioclase. Cenozoic Au and Cu deposits occur proximally to adakitic rocks, with host rocks of some deposits actually being adakitic rocks. Adakitic rocks thus have important implications for both deep-Earth dynamics and Cu-Au mineralization/exploration. Although studies of Cenozoic adakitic rocks have made many important advances, there remain weaknesses in some important areas such as their tectonic settings, petrogenesis, magma sources, melt-mantle interactions of pre-Cenozoic adakitic rocks, and their relationship with the onset of plate tectonics and crustal growth. Future research directions are likely to involve (1) the generation of adakitic magmas by experimental simulations of partial melting of different types of rock (including intermediate-acid rocks) and magma fractional crystallization at different temperatures and pressures, (2) the relationship between magma reservoir evolution and the formation of adakitic rocks, (3) the tectonic setting and petrogenesis of pre-Cenozoic adakitic rocks and related geodynamic processes, (4) interactions between slab melts and the mantle wedge, (5) the formation of Archean adakitic tonalite-trondhjemite-granodiorite and its link to the onset of plate tectonics and crustal growth, and (6) the relationship between the formation of adakitic rocks and metal mineralization in different tectonic settings.

show abstract

Section: Genetic Connection Between Eclogitic Xenoliths and Generatiomentioning

confidence: 98%

Adakitic rocks at convergent plate boundaries: Compositions and petrogenesis

Wang

Hao

Zhang

et al. 2020

Sci. China Earth Sci.

View full text Add to dashboard Cite

show abstract

Optomechanical Akhmediev Breathers

Xiong

2018

Laser & Photonics Reviews

View full text Add to dashboard Cite

The Akhmediev breather has attracted considerable attention over the past decades in various fields such as hydrodynamics, plasma physics, and nonlinear optics because of its wide applications and its importance in understanding nonlinear coherent phenomena. Here, we introduce optomechanical arrays as an integrated platform to observe both photonic and phononic Akhmediev breathers, with remarkable functionality for readout and control, complementing existing research on hydrodynamic and plasma systems. Our results pave a path toward reconfigurable nanophotonic and phononic networks, and may enable a new class of devices in signal processing and on‐chip nonlinear dynamical systems.

show abstract

Geochemical and SIMS U-Pb rutile and LA–ICP–MS U-Pb zircon geochronological evidence of the tectonic evolution of the Mudanjiang Ocean from amphibolites of the Heilongjiang Complex, NE China

Dong

Yang

et al. 2019

Gondwana Research

View full text Add to dashboard Cite

SIMS U-Pb dating of rutile within eclogitic xenoliths in the Early Cretaceous adakitic rocks of the Xuzhou-Huaibei area, China: Constraints on the timing of crustal thickening of the eastern North China Craton

Cited by 15 publications

References 31 publications

Adakitic rocks at convergent plate boundaries: Compositions and petrogenesis

Adakitic rocks at convergent plate boundaries: Compositions and petrogenesis

Optomechanical Akhmediev Breathers

Geochemical and SIMS U-Pb rutile and LA–ICP–MS U-Pb zircon geochronological evidence of the tectonic evolution of the Mudanjiang Ocean from amphibolites of the Heilongjiang Complex, NE China

Contact Info

Product

Resources

About