Understanding the rheological properties of the upper mantle is essential to develop a consistent model of mantle dynamics and plate tectonics. However, the spatial distribution and temporal evolution of these properties remain unclear. Here, we infer th
The Earth-Moon system resulted from a giant impact between proto-Earth and a small Mars-sized object (Theia). Solidification of the coalesced material resulted in internal differentiation and the establishment of a core-mantle-crust structure (e.g., Smith et al.1970; Wood et al.1970; Gagnepai...
Types of Enclaves and Their Features and Origins in Intermediate-Acid Intrusive Rocks from the Tongling District, Anhui Province, China Enclaves in intermediate-acid plutons from Tongling can be divided into three types: xenoliths, relics and magmatogenic enclaves. The magmatogenic enclaves... WU...
From the travel time data of the P-arrivals recorded by the passive seismic array across the Chinese Tianshan and regional seismic network, the P wave velocity structure of the crust and upper mantle down to 400km along Kuqa-Kuytun profile is reconstructed by using seismic tomography technique....
The geochemical cycle of mercury in Earth’s surface environment (atmosphere, hydrosphere, biosphere) has been extensively studied; however, the deep geological cycling of this element is less well known. Here we document distinct mass-independent mercur
The Sartohay block of the Dalabute ophiolite consists chiefly of mantle harzburgite and lherzolite with minor dunite. These rocks host voluminous chromite deposits with lenticular or vein-like shapes. The podiform chromitites are associated with, and cross-cut by, numerous troctolite dykes. Chromite...
Sun, A.E. Ringwood, E. Jagoutz, A.W. Hofmann Potassium, rubidium, and cesium in the Earth and Moon and the evolution of the mantle of the Earth Geochim. Cosmochim. Acta, 56 (1992), pp. 1001-1012 Google Scholar Mueller et al., 1988 S. Mueller, G.J. Taylor, R.J. Phillips ...
Gold enrichment mechanism of ore-forming fluid is the essence of gold metallization. This paper summarizes the distinguishing symbols of mantle fluid and effect of crust-mantle structure on fluid movement. Fluid moving processes include osmosis, surge, gas-liquid alternation and mutation of fluid speed...
Considering the presence of resorption texture of quartz phenocryst, we propose a petrogenetic model of ‘crystal mushes’ for rhyolites prior to their eruption. These constraints record the intense crust–mantle interaction in the southern margin of the NCC. Given the regional data and spatial ...
the surface2. Conversely, mantle peridotites and fresh basalts from mid-ocean ridges show a very restricted range of δ18O values—e.g., 5.18 ± 0.28‰ for mantle olivine3,4. Thus, deviations of δ18O from typical mantle values are thought to provide robust evidence for recycled ...