Showing 281 - 300 results of 586 for search '"quartzite"', query time: 0.14s Refine Results
  1. 281

    Effect of chemically synthesis compared to biosynthesized ZnO nanoparticles using aqueous extract of C. halicacabum and their antibacterial activity by K. Nithya, S. Kalyanasundharam

    Published 2019-01-01
    “…The surface morphologies analysis has been hexagonal quartzite structure confirmed from SEM. Finally antibacterial activities against Gram-positive and negative bacteria. …”
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    Article
  2. 282

    Control of rock joint parameters on deformation of tunnel opening by Suman Panthee, P.K. Singh, Ashutosh Kainthola, T.N. Singh

    Published 2016-08-01
    “…Garnetiferous schist and slate characterized using high persistence show the development of large plastic zones but small block size, depending upon joint spacing; whereas low persistence, low spacing and low shear strength in marble and quartzite create rock block fall condition.…”
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    Article
  3. 283

    PETROGRAPHY AND PROVENANCE OF SANDSTONE AND STUDIES OF SHALE OF KULDANA FORMATION, KALAMULA AND KHURSHEEABAD AREA, KAHUTA, AZAD KASHMIR by Ahmer, Muhammad

    Published 2017-01-01
    “…The sedimentary grains include limestone, dolomite, quartzite, sandstone and siltstone. The volcanic rock fragments are of fine grained basalts. …”
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    Article
  4. 284

    New orogenic type gold occurrences in the Uyanga ore knot (Central Mongolia) by Sodov Ariunbileg, Gaskova Olga, Gankhuyag Altansukh, Lkhagvasuren Dagva-Ochir, Dorjsuren Otgonbaatar, Tumen-Ulzii Oyunchimeg, Altanbaatar Battushig

    Published 2019-01-01
    “…The rocks of the Erdenetsogt formation have an irregular gold content: 0.96 g/t Au is determined in quartz vein (BG-7/16), Au content is highest up to 3.5 g/t in the quartzite-jasper (Ult-7/16 and Ult-9/16) cut by quartz veins in the Ult occurrence. …”
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    Article
  5. 285

    About potential area of Patrinia sibirica (L.) Juss. in the Southern Urals by Aliya G. Kutueva, Nikolai I. Fedorov, Albert A. Muldashev, Amina H. Galeeva, Leniza G. Naumova

    Published 2020-11-01
    “…The modeling has revealed suitable habitats in a wood-steppe zone of the Trans-Ural which are confined to the outcrops of granite and quartzite rocks among petrophytic and shrub steppes. …”
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    Article
  6. 286

    Detrital zircon geochronology of Neoproterozoic to Middle Cambrian miogeoclinal and platformal strata: Northwest Sonora, Mexico by George E. Gehrels, John H. Stewart, Essa L. Gross

    Published 2000-05-01
    “…and Middle Cambrian Bolsa Quartzite show age groups from 525 Ma to 1.63 Ga, with a dominant population of 1.1 to 1.2 Ga grains. …”
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    Article
  7. 287

    Korelasi Unsur Antara U dengan Co, Ni, Ag, Mo pada Batuan Granit dan Kuarsit di Jumbang I, Kalimantan Barat by Priyo Sularto

    Published 2012-05-01
    “…As the other areas in Kalan, Jumbang I also have geochemical anomalies of uranium element in Vein of quartzite rocks at several locations, with high grade and radioactivities value between 500 c/s - 15000 c/s. …”
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    Article
  8. 288

    Metallogenic characteristics of some localities of gold mineralization along shear zones of Elgaab, Dum el Tor and Sodri - Um Bader, (Sudan) by Mohamed Osman Elgızoulı, Badr El Din Khalil, Mohammed Y. Abedelgalıl

    Published 2021-08-01
    “…The sector is dominated by metasediments, metavolcanic - sedimentary series represented by chlorite - schist, quartzite, calc - silicate, and marble. Low - grade metamorphic arc - related volcano - sedimentary sequence occurs as thin narrow bands and subjected to tectono - thermal events of Pan - African orogeny during the Late - Proterozoic era (900 - 550 Ma). …”
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    Article
  9. 289

    The Silurian Frontier of Emersion Stage in the Territory of South Cis-Timan (Perm Region) by Yu. G. Paktovskiy

    Published 2020-10-01
    “…From the point of view of lithology, ventfacts are quartzite sandstones with relics of hydromicas cement, the structure of which is dominated by a cementless contact connection of quartz grains and fragments of various rocks. …”
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    Article
  10. 290

    Methodological substantiation of the choice for optimal modes of equipment operation during the stage-wise concentrate removal in iron ores beneficiation by Alexandr S. Opalev, Svetlana A. Alekseeva

    Published 2022-11-01
    “…For the studied ferruginous quartzite ore processed at the Stoilensky GOK, the obtained dependences can be described by a second-order polynomial with a high accuracy of approximation. …”
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    Article
  11. 291

    Russian meteorite of the Bronze Age (rock record) by Vodolazhskaya, L.N., Nevsky, M.Yu.

    Published 2014-12-01
    “…This paper presents the results of the study of petroglyphs found in the quartzite grotto near the Skelnovsky small village in the Northern Black Sea in the South of Russia. …”
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  12. 292

    DEFORMASI TEKTONIK TERHADAP PEMBENTUKAN PERANGKAP PADA ZONA TINGGIAN BATUAN DASAR DI LAPANGAN SUTOS CEKUNGAN SUMATERA SELATAN by , NITA ARIYANTI, , Dr.Sugeng Sapto Surjono

    Published 2012
    “…Basement rock at the study area consists of schist, filit, quartzite, granite, and limestone. In the study area identified lasted for four tectonic stages, namely the phase of post-Cretaceous tectonic compression, extension Paleogene tectonic phase, Neogene tectonic compression phase, and post-compression Neogene tectonics phase. …”
    Thesis
  13. 293
  14. 294

    Geochemical signatures of manganese ores around Barbil, Noamundi-Koira basin, Singhbhum Craton, Eastern India by Shabber H. Alvi, Mohd. Shaif

    Published 2021-10-01
    “…Volcanic rocks belonging to Bonai volcanic suite (BVS) occur outside and all-around the NKB that consists of three distinct but conformable stratigraphic units viz; Lower Shale Formation, Middle Banded Hematite Quartzite (BHQ) and/or Banded Hematite Jasper (BHJ) and Upper Shale Formation. …”
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  15. 295

    The orosirian-statherian sequence and transpressive geometry in Santa Maria de Itabira, Minas Gerais by Ricardo Pagung de Carvalho, Carlos Alberto Rosière, Vassily Khoury Rolim, Cristiano de Carvalho Lana, João Orestes Schneider Santos

    Published 2014-06-01
    “…The metasedimentary rocks cropping out in the surroundings of the township of Santa Maria de Itabira (MG), comprise Orosirian quartzites herein informally named Pedra Branca Quartzite and the Statherian banded iron formation bearing sequences at the eastern border of the southern Espinhaço Range. …”
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    Article
  16. 296

    Hydrogeochemical characterization of a shallow groundwater system in the weathered basement aquifer of Ilesha area, southwestern Nigeria by M. N. Tijani, S. A. Oke, A. T. Olowookere

    Published 2014-09-01
    “…The low concentrations of major cations in the urban areas can be attributed to low mineral dissolution of quartzite and muscovite quartz-schist bedrocks compared to the weathered granitic, amphibolite and biotite schist in the peri-urban areas. …”
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  17. 297

    IMPROVED MAGNETIC DATA ANALYSES AND ENHANCEMENT TECHNIQUES FOR LITHOLOGICAL AND STRUCTURAL MAPPING AROUND AKURE, SOUTHWESTERN NIGERIA by Akingboye A. Sunny, Ademila Omowumi, Ogunyele A. Chris

    Published 2018-01-01
    “…Based on magnetisation contrast, four amplitude zones were revealed on the Analytic Signal (AS) image, which include very high zone as migmatite complexes; intermediate zone as migmatite/gneiss and charnockite complexes; fairly low zone as granite-gneiss and granite complexes, and low zone as quartzite ridge/ complex. The large causative bodies delineated from the pseudo-gravity revealed density of about 0.133 g/cc in susceptibility. …”
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    Article
  18. 298

    Influence of aggregate source and size on the shear behavior of high strength reinforced concrete deep beams by Abdulrahman S. Albidah, Ali S. Alqarni, Muhammad Wasim, Aref A. Abadel

    Published 2023-12-01
    “…Nine deep beams were prepared with three coarse aggregate types (i.e., limestone, steel slag, and quartzite) having different toughness properties and two nominal maximum aggregate (10 mm and 20 mm) sizes, which were examined under four-point bending. …”
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  19. 299

    Palaeoweathering Conditions, Provenance, and Tectonic Setting of the Early Silurian Longmaxi Formation in the Upper Yangtze Region (Southern China): Evidence from Geochemistry by Liang Zhao, Yong Li, Chengjie Zou, Shaoze Zhao, Chaorong Wu

    Published 2023-04-01
    “…The parent rock of the Longmaxi-1 black shales in the Upper Yangtze region is a mixture provenance, mainly composed of intermediate-acid volcanic lithologies (granite and granodiorite), followed by mature quartzite and basalt. Black shale deposition is related to the tectonic setting of active continental margin and island arc-continent collision. …”
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  20. 300

    Bond Behavior of Steel Rebar Embedded in Cementitious Composites Containing Polyvinyl Alcohol (PVA) Fibers and Carbon Nanotubes (CNTs) by Dongmin Lee, Seong-Cheol Lee, Sung-Won Yoo

    Published 2023-02-01
    “…In the cementitious composites, the binder consisted of ordinary Portland cement, blast furnace slag, and fly ash, with a weight ratio of 39.5, 21.0 and 39.5%, respectively, while the nonbinder consisted of quartzite sand, lightweight aggregate, superplasticizer, and shrinkage-reducing admixture. …”
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    Article