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Olivine in deep-seated ultramafic xenoliths beneath the North China Block serves as a crucial proxy for decoding the compositions, properties, and evolution of the lithospheric mantle. Here, we conduct an investigation on olivine (including gem-grade) hosted in ultramafic xenoliths from Damaping basalt in the northern part of the North China Block. This contribution …
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Figure 1. Backscattered Electron (BSE) images of the Chang'e-5 basalt fragments examined here. Red rectangle represents 0.2 mm in each image. The brightest crystals are ilmenite and the darkest crystals are plagioclase. Intermediate tones are usually pyroxene or olivine, but could also represent other phases. - "CRYSTAL SIZE DISTRIBUTION OF PLAGIOCLASE IN BASALT …
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Herein, we report some major and trace elements of a weathering profile developed on Neogene basalt in northeast Hainan Island, South China. Because basalts are very sensitive to chemical weathering (Berner and Berner, 1997), and chemical weathering is significantly intensified by the tropical climate, most of the weathering profiles in this region have undergone …
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Cobalt is crucial for various applications, including air travel, energy storage, cemented carbides, and others. In recent years, the primary driver of cobalt demand has been its use in batteries (Graedel and Cobalt, 2022, Sun et al., 2020).By 2030, the global demand for lithium-ion batteries is estimated to range from 235 to 430 kt (Fu et al., 2020), with substantial …
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Here we present the first geochemical and isotopic variations and detailed spatial distribution of Late Permian basaltic rocks penetrated by deep exploratory boreholes in the Sichuan Basin ...
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Four different basalt fiber dosages and four different fiber lengths were used as variables, resulting in a total of 17 groups of gangue concrete specimens, with each group comprising three parallel specimens. The basalt fiber dosages were 0, 0.05%, 0.10%, 0.15%, and 0.20%, and the fiber lengths were 6 mm, 12 mm, 18 mm, and 24 mm.
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The particle size distribution and the similarity between the true density of CE-5 soils and Apollo basalt indicate a possible basaltic origin of the CE-5 sample. The most abundant minerals composing CE-5 soils are pyroxene, followed by plagioclase, with fewer amounts of ilmenite and olivine, indicating that basaltic composition dominates CE-5 ...
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The detailed analytical procedures are described by Zheng et al. ... Selenium distribution in the Chinese environment and its relationship with human health: a review. Environ. ... Mobilization and re-distribution of major and trace elements during extreme weathering of basalt in Hainan Island, South China. Geochem. Cosmochim. Acta, 71 ...
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Download scientific diagram | | (A) The distribution of the Emeishan basalts and cooper ore in southwest China (after Li et al., 2009) (B) Geologic map of the Zhaotong area, Yunnan Province ...
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Request PDF | On Dec 1, 2024, Mengdie Liang and others published Tensile properties and load distribution of multi-bolted pultruded basalt FRP joints with multi-directional fiber lay-ups | Find ...
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Cenozoic basalts are widely distributed in eastern China, and some of them contain zircon megacrysts which are considered to be constituent mineral of the subcontinental lithospheric mantle...
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Schematic map of southwestern China showing the distribution of volcanic rocks in the Late Permian (a), and geological map of the Sichuan Basin showing the distribution of the …
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The Cretaceous extension resulted in extensive emplacement of mantle-derived igneous rocks such as basalts, mafic dikes, and A-type granites (e.g., Li et al., 2014a).In particular, the mafic rocks are an effective detector for probing the chemical and thermal state of the mantle, and they provide crucial information on crust-mantle interactions, mantle …
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These basalts exhibit geochemical inheritance of island arc basalt (IAB)-like trace-element patterns, moderately enriched Sr–Nd isotopic compositions, and variable Pb isotopic …
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Download scientific diagram | A Tectonic framework of China, showing the distribution of the Emeishan basalt province (after Bao et al. (2017)); B simplified geological map of the South …
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Based on their distribution, geological ages and petrographic series the magmatic evolution of Cenozoic basaltic rocks in North China can be divided into three stages. Geochemical data …
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By adopting the petrogenetic model for CE5 basalt proposed by Su et al. (2022), ... On Dec 17, 2020, China's Chang'E-5 (CE5) mission brought back 1.731 kg of lunar soil, collected from the landing site at 43.06°N, 51.92°W in the northern Oceanus Procellarum, belonging to a young mare basalt unit Em4 (the fourth Eratosthenian-aged mare ...
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Mobilization and re-distribution of major and trace elements during extreme weathering of basalt in Hainan Island, South China Jin-Long Ma a,b, Gang-Jian Wei a,*, Yi-Gang Xu a, Wen-Guo Long a,c ...
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Variation on the morphology and tensile strength of basalt fiber processed in alkali solutions Meng Li a, b, Dan Xing c, Qing-Bin Zheng c, Hui Li a, b, *, Bin Hao a, b, Peng-Cheng Ma a, b, * a Laboratory of Environmental Science and Technology, The Xinjiang Technical Institute of Physics and Chemistry, Key Laboratory of Functional Materials and Devices for Special
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Detailed studies by Fantle and DePaolo, 2004, ... China, where basalt has undergone extensive weathering due to high temperatures and rainfall and laterites are widely distributed. ... Our study demonstrates that the distribution of Fe atoms in different Fe oxides can affect the fractionation of Fe isotopes in soils. These findings help explain ...
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The moon has some new stories to tell. Scientists have published the first detailed analyses of the historic cache of lunar soil and rock that China retrieved from the far side of the moon this year.
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Geological map showing simplified distribution of the basalt in the Leizhou Peninsula, China and profiles sampling location (a); field photographs of NLC (b) and CLL (c) weathering profiles. ... The detailed profile and sample descriptions (including depth, horizon, and color) are given in Table 1. Table 1. Basic characteristics and main ...
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Distribution of the Tarim Flood Basalt Province and the location of the study area Distribution of flood basalt after Chen et al. u2014e r Inset shows its geographical location in NW China.
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Poor interfacial bonding between basalt bers and resin matrix is the main reason limiting the application and promotion of basalt ber-epoxy resin composites [7, 8]. is is due to the inert surface of the basalt bres and their high smoothness [109, ]. ese disadvantages make it dicult to introduce groups on the surface of basalt
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The emplacement of the Late Permian Emeishan large igneous province (ELIP) in the Upper Yangtze craton, SW China, is considered to be a crucial factor that triggered the end-Guadalupian biodiversity crisis.However, the contribution of ELIP remains debated because of its relatively modest known size. The restricted assessment of its areal extent is, in part, due to …
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Four well-exposed basalt sections have been chosen for a detailed Sr–Nd–Pb–Hf isotopic study: the Baiyinxiang section (BY, ∼33 Ma, >64 m thick), the Hanqingba section (HQ, …
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Using these field lithological points, we applied the random forest (RF) and support vector machine (SVM) methods to delineate basalt in the Jining region by integrating 1:50,000 …
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Several USGS and Chinese soil and basalt standard references, such as GSS-5, GSS-7, GXR-6 (soils) and BHVO-2, BCR-2 (basalt) were repeatedly measured with the samples to monitor the quality of ICP-MS and ICPAES measurements, and the results were generally within the range of ±10% of the certified values.
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Mobilization and re-distribution of major and trace elements during extreme weathering of basalt in Hainan Island, South China July 2007 Geochimica et Cosmochimica Acta 71(13):3223-3237
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In this work, we analyzed the chemical composition profiles of pyroxene grains from six CE5 basalt clasts ( Fig. 2a-f). These basalts are mainly composed of clinopyroxene, plagioclase, and ...
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The length of basalt fiber produced by the company is usually set to a multiple of 3 mm. Hence, the frequency distribution of the skeleton gap axis length in the range of 0 ∼ 3 mm, 3 ∼ 6 mm and 6 ∼ 9 mm can be used to characterize the frequency distribution of basalt fibers with 3 mm, 6 mm and 9 mm, respectively.
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This means that the water-content contrast between the basalt source and the lithospheric mantle for a specific area, and the regional water distribution in the lithospheric mantle and in the basalt source for entire eastern China could be explored. Chen et al.
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By Katie Hunt, CNN (CNN) — The moon has some new stories to tell. Scientists have published the first detailed analyses of the historic cache of lunar soil and rock that China retrieved from the ...
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Cenozoic basalt distribution and faults of the continental-oceanic transitional zone over the South China Sea. Note: certain areas of basalts with small sizes or unconfirmed sizes due to insufficient data are shown with slight enlargement in order to be seen clearly. ... Late Mesozoic granitic and granodioritic magmatism was widespread in South ...
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Download scientific diagram | | (A) The distribution of the Emeishan basalts and cooper ore in southwest China (after Li et al., 2009) (B) Geologic map of the Zhaotong area, Yunnan Province...
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The North China Craton (NCC) is considered to be a collage of four micro-continental blocks, including the Yinshan, Ordos, Longgang, and Rangrim blocks. ... A detailed introduction to the principle of RF can refer to Breiman, 1996, Breiman, 2001. 3.2.2 ... this also shows the same zonal distribution as the basalt trend in the study area ...
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