Showing 441 - 460 results of 586 for search '"quartzite"', query time: 0.79s Refine Results
  1. 441
  2. 442

    The Chronology of Early Human Settlement in Three Gorges Region, China—Contribution of Coupled Electron Spin Resonance and Uranium-Series Dating Method by Fei Han, Jean-Jacques Bahain, Qingfeng Shao, Xuefeng Sun, Pierre Voinchet, Ping Xiao, Manchen Huang, Mengqi Li, Gongming Yin

    Published 2022-07-01
    “…Cosmogenic nuclide burial dating of quartzite stone artifacts and coupled electron spin resonance and uranium series dating (ESR/U-series) of fossil teeth have the potential to date Early–Middle Pleistocene hominin sites in Asia and were applied increasingly in China in recent years. …”
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  3. 443

    The Acheulean of the Upper Guadiana River Basin (Central Spain). Morphostratigraphic Context and Chronology by M. Santonja, M. Santonja, A. Pérez-González, J. Baena, J. Panera, J. Panera, E. Méndez-Quintas, E. Méndez-Quintas, D. Uribelarrea, D. Uribelarrea, M. Demuro, L. Arnold, A. Abrunhosa, A. Abrunhosa, S. Rubio-Jara, S. Rubio-Jara, S. Rubio-Jara

    Published 2022-06-01
    “…These fans, mainly composed of Lower and Middle Ordovician quartzite gravel, were eroded in their distal positions by the Bullaque and Becea rivers, forming very low terraces on which large concentrations of Acheulean and Mousterian lithic industry can be found. …”
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  4. 444

    Land-Use Types Regulate Se:Cd Ratios of Natural Seleniferous Soil Derived from Different Parent Materials in Subtropical Hilly Areas by Chunxia Sun, Qinlei Rong, Xi Guo, Jiaxin Guo, Yi Chen, Yihua Chang, Jie Chen, Qin Zhang, Chunhuo Zhou, Haisheng Cai, Xiaomin Zhao

    Published 2023-03-01
    “…The results suggested that, compared with quaternary red clays (qrc), the Se content of soils derived from river and lake sediments (rls) and weathered acidic crystalline rocks (wacr) decreased by 5.81%–19.75%, while the weathered quartzite (wq)-derived soils was increased significantly. …”
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  5. 445

    Classification of cut slopes in weathered meta-sedimentary bedrocks by Johnbosco Ikenna Nkpadobi, John Kuna Raj, Tham Fatt Ng

    Published 2016-04-01
    “…In order of abundance, the meta-sedimentary rocks along Pos Selim Highway in Perak state Malaysia comprise quartz mica schist, graphitic schist, and quartzite layers. Field investigations revealed that these meta-sedimentary rocks have gradational weathering profile based on differences particularly in textures, hardness, lateral changes in colour, and consistency of material extension. …”
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  6. 446

    Tin transport and cassiterite precipitation from hydrothermal fluids by Xiangchong Liu, Pingping Yu, Changhao Xiao

    Published 2023-11-01
    “…This explains why cassiterite can precipitate in host rocks (e.g., sandstone or quartzite) that do not provide oxidizing agents. A simple rise in fO2 levels and pH neutralization (e.g., greisenization) also cause cassiterite precipitation. …”
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  7. 447

    Insights into the microbial life in silica-rich subterranean environments: microbial communities and ecological interactions in an orthoquartzite cave (Imawarì Yeuta, Auyan Tepui,... by Daniele Ghezzi, Daniele Ghezzi, Lisa Foschi, Andrea Firrincieli, Pei-Ying Hong, Freddy Vergara, Freddy Vergara, Jo De Waele, Jo De Waele, Francesco Sauro, Francesco Sauro, Francesco Sauro, Martina Cappelletti

    Published 2022-09-01
    “…Our results suggest that the water content greatly contributes to shaping the microbial diversity within a subterranean quartzite environment. Further, the phylogenetic affiliation between Imawarì Yeuta dominant microbes and reference strains retrieved from both surface and subsurface silica- and/or CO2/CO-rich environments, underlines the selective pressure applied by quartz as rock substrate. …”
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  8. 448

    Stone-tool assemblage of the Eneolithic settlement of Tolum-1 in the Konda River Basin by Khramcov M.V., Chairkina N.M., Dubovtseva E.N., Myznikov S.A.

    Published 2023-09-01
    “…According to the raw-material composition of the stonetool assemblage, mainly represented by soft rocks (grey-green slate, burgundy schist, etc.) and, to a lesser extent, by flint of various colors, quartz and quartzite, the ancient population of this region did not have continuous sources of high-quality ornamental raw materials. …”
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  9. 449

    Application of lithogeochemical and pyrite trace element data for the determination of vectors to ore in the Raja Au–Co prospect, northern Finland by S. Raič, F. Molnár, F. Molnár, N. Cook, N. Cook, H. O'Brien, Y. Lahaye

    Published 2022-02-01
    “…The major lithologies at Rajapalot comprise amphibolite facies metamorphosed and polydeformed calcsilicate rocks that alternate with albitic units, mafic volcanic rocks, mica schist and quartzite. Mineralization at Rajapalot prospects is characterized by an older Co-mineralizing event and a younger high-grade Au mineralization with re-mobilization and re-deposition of Co. …”
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  10. 450

    Seismic imaging of dyke swarms within the Sorgenfrei–Tornquist Zone (Sweden) and implications for thermal energy storage by A. Malehmir, B. Bergman, B. Bergman, B. Andersson, R. Sturk, M. Johansson, M. Johansson

    Published 2018-12-01
    “…These dykes, 10–50 m thick, in the nearby quarries (within both Precambrian gneiss and quartzite) express themselves mostly in a subvertical manner. …”
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  11. 451

    Physical, mechanical properties and microstructure of concretes made with natural and crushed aggregates: Application in building construction by Japhet Tiegoum Wembe, Luc Leroy Mambou Ngueyep, Emmanuel Elat Assoua Moukete, Javad Eslami, Prosper Pliya, Jean-Marie Bienvenu Ndjaka, Albert Noumowe

    Published 2023-03-01
    “…This paper discusses an experimental work on concrete made from river and crushed sands such as quartzite, granite, gneiss, marble, dolomite, basalt and limestone with an emphasis on physical, mechanical, and microstructural properties of fresh and hardened concrete. …”
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  12. 452

    O Rio Cambongo-Negunza e os seus afluentes: um exemplo da complexidade de padrões de drenagem em Angola by Ilídio do Amaral

    Published 2006-12-01
    “…Above the coastal surface, in the crystalline rock strip, some quartzitic hills with Inselberge characteristics rise out of the plains, leading to problems in relation to, for example, the western extension of the quartzite formations and their dismantling, and the behaviour of the same material in the complex genesis and evolution processes of the extensive regional line of N-S escarpments, against which the erosion surfaces of the coastal belt end. …”
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  13. 453

    Bronze age settlement in churchyard of Gradac monastery by Peković Mirko, Pejović Emilija

    Published 2009-01-01
    “…Beside pottery, in this layer there were also few fragments of different shapes made of Rozhnac stone, flints and quartzite, part of stone axe with perforation whose upper part is shaped into secant and two fragmented millstones made of quartzlathyte, a mineral found in mountain Golija (Pl. …”
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  14. 454

    STUDY OF STRUCTURIZING CAPACITY OF MINERAL FILLER OF DIFFERENT ORIGIN by Ivan Kopynets, Volodymyr Kaskiv, Оleksii Sokolov

    Published 2022-10-01
    “…Mineral filler of limestone, granite, quartzite, fly ash, mechanically activated fly ash, the ash from hydraulic waste disposal, blast furnace slag and cement had been used for research. …”
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  15. 455

    Adsorption treatment of sewage sludge from heavy metals by Alexey M. Nazarov, Iren O. Tuktarova, Andrey A. Kulagin, Lyaisan Kh. Araslanova, Vasily A. Archipenko

    Published 2020-10-01
    “…The authors have previously shown the effectiveness of wastewater treatment from HM using sorbents based on dolomite, quartzite, and waste from mining and processing plants. …”
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  16. 456

    Diversidade genética de pitayas nativas do cerrado com base em marcadores RAPD Genetic diversity of native pitaya native from brazilian savannas with basis on RAPD markers by Keize Pereira Junqueira, Fábio Gelape Faleiro, Nilton Tadeu Vilela Junqueira, Graciele Bellon, Cristiane Andréa de Lima, Luciana Sobral de Souza

    Published 2010-09-01
    “…<br>Brazilian savanna pitayas naturally vegetate on solid rocky sandstone or quartzite, tree trunks and on rocky fields sand soils at Minas Gerais, Goiás, Distrito Federal, Tocantins, Rio de Janeiro and Bahia, with strong evidences that Brazil central region is the biggest pitayas dispersion center, because of wide phenotypic diversity observed in collected accesses. …”
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  17. 457

    Formation of a Composite Albian–Eocene Orogenic Wedge in the Inner Western Carpathians: P–T Estimates and <sup>40</sup>Ar/<sup>39</sup>Ar Geochronology from Structural Units by Marián Putiš, Ondrej Nemec, Martin Danišík, Fred Jourdan, Ján Soták, Čestmír Tomek, Peter Ružička, Alexandra Molnárová

    Published 2021-09-01
    “…Celadonite-enriched muscovite from the subautochthonous Fatric Zobor Nappe meta-quartzite sample ZI-3 yielded a mini-plateau age of 62.21 ± 0.31 Ma which coincides with the closing of the Infratatric foreland Belice “flysch” trough, the accretion of the Infratatricum to the Tatricum, and the formation of the rear subautochthonous Fatricum bivergent structure in the Eocene orogenic wedge.…”
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  18. 458

    La ocupación paleolítica en los páramos del Duero. Nuevos datos procedentes de Valdecampaña (Olivares de Duero, Valladolid) by Fernando DÍEZ MARTÍN, Policarpo SÁNCHEZ YUSTOS, José Ángel GÓMEZ GONZÁLEZ

    Published 2009-08-01
    “…TL dating of a burnt quartzite brackets this assemblage to 143464 ± 10827 BP, and offers a chronological framework for the Palaeolithic human occupation in this region. …”
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  19. 459

    Mineralogy, geochemistry, genesis, and industrial application of silica in Arefi area, south of Mashhad by Mohammad Hassan Karimpour, Azadeh Malekzadeh Shafaroudi, Saeid Saadat

    Published 2014-10-01
    “…More than 97% of the pebbles are quartz as mono-crystalline, poly-crystalline, and minor fragments of chert, quartzite, and mica schist. Less that 3% of the remaining minerals are feldspar, mica, chlorite, hornblende, tourmaline, zircon, sphene, and opaque minerals. …”
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  20. 460

    ESTUDO DE PARÂMETROS MORFOMÉTRICOS DA SUB-BACIA HIDROGRÁFICA DO RIO JACARECICA (SE) by Alex de Sousa Lima, Aracy Losano Fontes

    Published 2016-03-01
    “…It is winding with low drainage and its drainage density is directly affected by Waste Saws (quartzite). It was observed that in the area upstream of the blades there is a deficiency of moisture which influences the placement and use of the local agricultural space. …”
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