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 …
Geochemical data from this study indicate that Cenozoic basaltic magmas of North China were derived from two different mantle sources. Epuptions of alkali and subalkali basalts occurred respectively during Paleogene, Neogene, and Quaternary in North China.
explanation requires no major difference in global mare basalt NS/FS mantle source regions; indeed, mare basalt ages on the NS/FS span a similar range, despite the lower abundance on the farside (Figure 1c). Additional support for crustal thickness as a factor in mare basalt distribution was found in analysis of mare
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.
The Moon has a global dichotomy, with its near and far sides having different geomorphology, topography, chemical composition, crustal thickness, and evidence of volcanism (1–3).Volcanic eruptions flooded parts of the surface with lava, producing rocks known as mare basalts, which are more common on the nearside (), where they cover ~30% of the surface …
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...
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
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...
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 …
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 …
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 ...
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 ...
China is the world's largest consumer of Mn resources. In recent years, this demand for Mn has increased because of the rapidly developing metallurgical and high-tech industries (Du et al., 2013; Cong et al., 2018; Deng et al., 2019; Hu et al., 2021).In particular, with the development of new infrastructure projects and new energy vehicles, the demand for stainless …
These basalts exhibit geochemical inheritance of island arc basalt (IAB)-like trace-element patterns, moderately enriched Sr–Nd isotopic compositions, and variable Pb isotopic …
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 …
BASALT consists of four modules: Automated Binning, Bin Selection, Refinement, and Gap Filling. First, assembled contigs are sorted into bins by several binning tools, each with multiple ...
Chinese Journal of Geophysics (2000-2018) Earth Interactions; ... varying amounts of these two components. Basalt can separate from slabs and be transported elsewhere, but its spatial distribution is poorly known, which is crucial for understanding the mantle's composition and evolution. ... Detailed radial profiles of the basalt fraction and ...
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.
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 ...
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.
The Jiadi and Damaidi gold deposits in southwest Guizhou Province are the largest basalt-hosted Carlin-type gold deposits recently discovered in China. This study uses the Tescan Integrated Mineral Analyzer, supported by detailed field investigations, regional geological data, and extensive sample collections, including mineralized ore, altered wall rock, and unaltered …
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 ...
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 …
We address this issue by comparing compositions and source heterogeneity of the 106–58 Ma basalts from Liaodong Peninsula and its adjacent areas (LPAA) in eastern China, …
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 …
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.
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 ...
As an emerging green industrial material, basalt fiber-epoxy composites are widely used in many fields such as aviation, ships and automobiles [].Reinforced phase basalt fibres with the advantages of green and pollution-free, high mechanical strength, good temperature resistance and chemical stability [2,3,4].Because of the good mechanical properties, resistance …
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 ...
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 ...
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 …
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 …
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, …