Showing 401 - 420 results of 586 for search '"quartzite"', query time: 0.13s Refine Results
  1. 401
  2. 402

    Specific composition features of Kodinka Formation mudstones (Upper Devonian, the Middle Urals eastern slope) by Yu. Melnichuk Oleg, D. Ryanskaya Anastasiya

    Published 2017-01-01
    “…There were some diverse rock massifs in source area, including cherts, igneous (mafic, intermediate, felsic), metamorphic (quartzite, serpentine rock and shale) units. Source rocks undergone weathering at intermediate semi-arid/semi-humid climate conditions and passive tectonic regime. …”
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  3. 403

    Neoarchean crustal shear zones and implications of shear indicators in tectonic evolution of Bundelkhand craton, central India by S C Bhatt, Vinod K. Singh

    Published 2019-07-01
    “…These gneisses associated with migmatite, amphibolite, quartzite, and schist were evolved in D 2 compressive phase, which are not occurring in northern part of craton. …”
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  4. 404

    Petrology, geothermobarometry and geochemistry of granulite facies wall rocks and hosting gneiss of gemstone deposits from the Mogok area (Myanmar) by Myint Myat Phyo, Leander Franz, Rolf L. Romer, Christian de Capitani, Walter A. Balmer, Michael S. Krzemnicki

    Published 2023-06-01
    “…The MMB is mainly composed of medium to high-grade metamorphic marble, calc-silicate rocks, gneiss, quartzite, peridotite and igneous rocks such as granite, syenite and gabbro. …”
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  5. 405

    A new geological and geophysical interpretation to potential felds near ESRU. The paper 1. Wesern part of the Urals by K. S. Ivanov, N. P. Kostrov

    Published 2016-10-01
    “…Block of Precambrian metamorphous rocks with ferruginous quartzite; 2. Block of ocean type rock or mantle diapir (plum). …”
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  6. 406

    Sustainable Applications for Utilizing Antimony Tailing Coarse Aggregate (ATCA) in Concrete: Characteristic of ATCA and Toxicity Risks of Concrete by Jianqun Wang, Long Li, Longwei Zhang, Bei Li, Renjian Deng, Defeng Shi

    Published 2021-09-01
    “…It is demonstrated that the essential mineral is SiO<sub>2</sub> and the lithology of ATCA is quartzite. The mechanical properties, coarse quality of ATCA, and NCA were studied and compared. …”
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  7. 407

    The relationship between geology and rock weathering on the rock instability along Mugling-Narayanghat road corridor, Central Nepal Himalaya by Pradhan, Biswajeet, Regmi, Amar Deep, Kohki, Yoshida, Hidehisa, Nagata, Pradhan, Ananta Man Singh, Pourghasemi, Hamid Reza

    Published 2013
    “…The main rock types in the study area are limestone, dolomite, slate, phyllite, quartzite and amphibolites of Lesser Himalaya, sandstone, mudstone and conglomerates of Siwaliks and Holocene Deposits. …”
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  8. 408

    Le comportement symbolique dans la Préhistoire de la Roumanie: art mobilier au Paléolithique supérieur en Moldavie by Corneliu BELDIMAN, Diana-Maria SZTANCS

    Published 2009-12-01
    “…Les types identifiés sont: bâtons percés sur métatarse de cheval et sur bois de renne; pendeloques lithiques et en os; rondelle en bois de renne; dents percées; objets lithiques en quartzite et graphite; objets gravés et encochés lithiques et en os; harpon décoré; fragment de défense de mammouth ayant des traces de débitage et façonnage; coquilles fossiles appartenant à l’espèce Congeria?…”
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  9. 409

    Impacts of Different Parent Materials in Red Soil Region on Stability of Paddy Soil Aggregates by Peng GUO, Liyan ZHU, Kailou LIU, Ze FU, Xingjian ZHANG, Zhaohui LUO, Lidong BI

    Published 2022-03-01
    “…【Conclusion】For paddy soil in the same soil layer (plough layer), there are significant differences in the water stability of soil aggregates of different parent material types, which rank as: quartzite weathering material > acid crystalline weathering material > lake sediment > river sediment > quaternary red clay > argillaceous weathering material. …”
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  10. 410

    Recovery quality index as a tool for monitoring the mined land reclamation by Maísa Quintiliano Alves, Igor Rodrigues de Assis, Júlio César Lima Neves, Fernanda Zeidan Oliveira, Amanda de Abreu Anunciação, Sandro Lúcio Silva Moreira, Ryan Daniel Stewart

    Published 2024-02-01
    “…Using the heavily mined Iron Quadrangle region of Brazil as an example, four undisturbed reference areas were selected: Atlantic Forest; ferruginous rupestrian grassland with dense vegetation; ferruginous rupestrian grassland with sparse vegetation; and quartzite rupestrian grassland. Four areas directly or indirectly affected by mining were selected, including an environmental compensation area set aside 5 years prior to the study, two sterile piles that had undergone recovery for 15 and 20 years, and a cave area with 15 years of recovery. …”
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  11. 411

    Spoločenstvá suchozemských mäkkýšov severnej časti Devínskej Kobyly (Malé Karpaty) by Jozef Šteffek

    Published 2005-11-01
    “…Species rich community was found also in old growth forest with quartzite substratum, however a number of steppe species is absent within this biotope. …”
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  12. 412

    Machine Learning Algorithms for Automatic Lithological Mapping Using Remote Sensing Data: A Case Study from Souk Arbaa Sahel, Sidi Ifni Inlier, Western Anti-Atlas, Morocco by Imane Bachri, Mustapha Hakdaoui, Mohammed Raji, Ana Cláudia Teodoro, Abdelmajid Benbouziane

    Published 2019-05-01
    “…From the results obtained, we can conclude that the classification approach produced an image containing lithological units which easily identified formations such as silt, alluvium, limestone, dolomite, conglomerate, sandstone, rhyolite, andesite, granodiorite, quartzite, lutite, and ignimbrite, coinciding with those already existing on the published geological map. …”
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  13. 413

    Thermodynamic control on chemical weathering of river bedrock at the Aba and Qamdo in Kaschin-beck disease region, eastern Tibet Plateau by Jixin Liu, Xiuqin Deng, Mingcai Hou, Xinyu Wang, Zeming Shi, Shijun Ni

    Published 2024-05-01
    “…This may indicate that there is no direct relationship between KBD and water environment. (4) The dissolution of calcite and dolomite in quartzite controls the change of element content of water. (5) Analysis of the Gibbs distribution shows that most of the elements in the groundwater of the KBD areas (Aba Prefecture, Qamdo area and the Yelllow River Basin region) and non-KBD area (the Yangtze River Basin region) majorly come from rock weathering. (6) The overall quality of groundwater is good, the salinity is low, and it is suitable for agricultural irrigation.…”
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  14. 414

    Soil-cement blocks: a sustainable alternative for the reuse of industrial solid waste by Tulane Rodrigues da Silva, Daiane Cecchin, Afonso Rangel Garcez de Azevedo, Jonas Alexandre, Izabella Christynne Ribeiro Pinto Valadão, Nivam Alves Bernardino, Dirlane de Fátima do Carmo, Patrícia Ferreira Ponciano Ferraz

    Published 2021-11-01
    “…A variety of industrial solid waste that can be incorporated into soil-cement blocks was observed, such as waste rock, sludge from water treatment plants, wood sawdust, polyethylene terephthalate fibers (PET), vegetable fibers from loofah, hemp fibers, rice husks, brachiaria grass, poultry eggshells, sugar cane bagasse, wheat and barley straw, welding slag, foundry sand, waste from quartzite mining, construction, and demolition, mechanical turning, pulp industry grains, and steel mill co-products. …”
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  15. 415

    Petrography and structural features of the Precambrian basement rocks in the Benin-Nigerian Shield, NW Nigeria: Implications for their correlation with South Atlantic Precambrian t... by Emmanuel Daanoba Sunkari, Basiru Mohammed Kore, Samuel Edem Kodzo Tetteh

    Published 2022-08-01
    “…The major rock types in the area are schists and quartzites, which have been intruded by granitic rocks that appear to be metamorphosed. …”
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  16. 416

    Analysing Effects on Ground Water Levels Due to Conversion of Rural to Urban Landscapes by Kumar Ashwani, Kumar Deepak, Veerabhadrappa S.M.

    Published 2022-09-01
    “…The area is part of the wide Indo-Gangetic alluvium with sand, silt and clay layers resting on quartzite’s of Delhi Super Group. Geomorphological map prepared using digital elevation models of the area shows older and younger alluvial plains and active flood plains of the river Hindan. …”
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  17. 417

    A post-peak dilatancy model for soft rock and its application in deep tunnel excavation by Wuqiang Cai, Hehua Zhu, Wenhao Liang, Xiaojun Wang, Chenlong Su, Xiangyang Wei

    Published 2023-03-01
    “…The overall fitting accuracy of the PPD model for 11 different rocks was found to be higher than that of the A–A model, particularly for Witwatersrand quartzite and jointed granite. The applicability and reliability of the PPD model to jointed granites and different scaled Moura coals were also investigated, and the model was found to be more suitable for the soft and large-scale rocks, e.g. deep rock mass. …”
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  18. 418

    The Sites of Kirchhellen and Weeze, Lower Rhine Bay/Germany, with an Elder Acheulean: starting points for research into the problems of recognizing stone-artefacts in pebble-accumu... by K. Schmude

    Published 1996-01-01
    “…Experience gained with flint silex, in Germany or elsewhere, cannot be generalized and used on other rocks: on one site archaic looking geofacts, made perhaps on limestone, may exist in hundreds together with isolated anthropogene similar artefacts on quartzite. The research into a possible archaeological site in an elder fluvial terrace demands to study the flow of material for a longer distance of the river, as well as the tributaries and to take into account numerous complex aspects, which influence the production of geofacts in the case involved. …”
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  19. 419

    The Research of Fluxed Sinter Production with Sufficiently High Strength and Improved Technological Properties by K. T. Zhantasov, Zh. M. Altybayev, M. K. Zhantasov, M. M. Yeskendirova, B. A. Lavrov, L. H. Frangulidi

    Published 2012-11-01
    “…According to the research it is assumed that the replacement of natural quartzite used as a flux to the nickel-cobalt-chromium containing ore and internal overburden, which include about 45% of silicon, as well as transition of nickel, cobalt and chromium ore into ferrophosphorous alloy with subsequent sales of its steel industry to a higher price will significantly improve the technical and economic indices of phosphorus production.…”
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  20. 420

    The Mechatronic System of Energy Saving Rock Destruction by Anatolyi P. Kichigin, Oleh M. Terentiev, Valentyna O. Polishchuk

    Published 2018-09-01
    “…The energy intensity of quartzite destruction has been reduced from 95.0 to 87.5 kWh/m3 (8%), the annual economic effect from the introduction is 27000 UAH. …”
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