Late Palaeozoic Ultramafic Lavas in Yunnan, SW China, and their Geodynamic Significance
Nianqiao Fang,Yaoling Niu +1 more
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In this article, the authors discuss the petrography, mineral compositions, and whole-rock major and trace element geochemistry of seven representative samples: six ultra samples and two ultra samples.Abstract:
of the extensive vegetation in the region. In this contribution, we discuss the petrography, mineral compositions, and whole-rock major and trace element geochemistry of seven representative samples: six ultraread more
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Bulk-rock Major and Trace Element Compositions of Abyssal Peridotites: Implications for Mantle Melting, Melt Extraction and Post-melting Processes Beneath Mid-Ocean Ridges
TL;DR: In this paper, the first comprehensive major and trace element data for 130 abyssal peridotite samples from the Pacific and Indian ocean ridge transform systems was presented, which revealed important features about the petrogenesis of these rocks, mantle melting and melt extraction processes beneath ocean ridges, and elemental behaviours.
Journal ArticleDOI
Global Correlations of Ocean Ridge Basalt Chemistry with Axial Depth: a New Perspective
Yaoling Niu,Michael J. O'Hara +1 more
TL;DR: Niu et al. as discussed by the authors studied the global correlations of ocean ridge basalt chemistry with axial depth and found that the correlation between axial depths and ocean ridge chemistry correlated positively.
Journal ArticleDOI
Early Permian seafloor to continental arc magmatism in the eastern Paleo-Tethys: U–Pb age and Nd–Sr isotope data from the southern Lancangjiang zone, Yunnan, China
D. Hennig,Bernd Lehmann,Dirk Frei,B. Belyatsky,Xin-Fu Zhao,Alexandre Raphael Cabral,P.S. Zeng,Mei-Fu Zhou,K. Schmidt +8 more
TL;DR: In this article, Zhang et al. showed that the southern Lancangjiang zone near the city of Jinghong at the Laotian border hosts MORB-like basaltic andesites and gabbros (Nanlianshan volcano-plutonic complex).
Journal ArticleDOI
Petrogenesis and tectonic implications of Late Jurassic shoshonitic lamprophyre dikes from the Liaodong Peninsula, NE China
TL;DR: The lamprophyres are shoshonitic and geochemically fall into three groups: Group I has relatively high SiO2 (52.5-57.1); Group II has relatively low SiO 2 (44.8-50.0); Group III is transitional between the two in all elemental and isotopic compositions as mentioned in this paper.
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Primitive magmas in the Emeishan Large Igneous Province, southwestern China and northern Vietnam
TL;DR: The high-Mg rocks vary in composition from LREE-depleted, low-Ti komatiites to LREEenriched, high-Ti picrites in the Emeishan Large Igneous Province (ELIP) as mentioned in this paper.
References
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Chemical differentiation of the Earth: the relationship between mantle, continental crust, and oceanic crust
TL;DR: In this paper, the average chemical compositions of the continental crust and the oceanic crust (represented by MORB), normalized to primitive mantle values and plotted as functions of the apparent bulk partition coefficient of each element, form surprisingly simple, complementary concentration patterns.
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Nature and composition of the continental crust: A lower crustal perspective
TL;DR: In this article, a three-layer crust consisting of upper, middle, and lower crust is divided into type sections associated with different tectonic provinces, in which P wave velocities increase progressively with depth and there is a large variation in average P wave velocity of the lower crust between different type sections.
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The Volume and Composition of Melt Generated by Extension of the Lithosphere
Dan McKenzie,Mike J. Bickle +1 more
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Olivine-Liquid Equilibrium
Peter L. Roeder,R. F. Emslie +1 more
TL;DR: In this paper, a number of experiments have been conducted in order to study the equilibria between olivine and basaltic liquids and to try and understand the conditions under which OIVINE will crystallize.