Showing 321 - 340 results of 586 for search '"quartzite"', query time: 0.31s Refine Results
  1. 321

    Petrology, Magnetic susceptibility, Tectonic setting and mineralization associated with Plutonic and Volcanic Rocks, Eastern Bajestan and Taherabad, Iran by Maliheh Ghoorchi Rooki, Saeed Saadat, Ali Reza Ashouri

    Published 2010-01-01
    “…The oldest exposed rocks, to the north of intrusive rocks and in Eastern Bajestan, are meta-chert, slate, quartzite, thin-bedded crystalline limestone and meta-argillite. …”
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    Article
  2. 322

    In Situ Carbon Dioxide Capture during Biomass Fluidized Bed Gasification by G. Ruoppolo, F. Miccio, P. Brachi, A. Picarelli, R. Chirone

    Published 2015-05-01
    “…The use of CaO-alumina mixed bed offers the advantage of reducing the tar concentration and prevent the bed agglomeration typically observed when olive husk and quartzite sand are used.…”
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  3. 323

    Effect of Artificial Freeze/Thaw and Thermal Shock Ageing, Combined or Not with Salt Crystallisation on the Colour of Zamora Building Stones (Spain) by Jacinta García-Talegón, Adolfo Carlos Iñigo, Rosa Sepúlveda, Eduardo Azofra

    Published 2022-08-01
    “…In this work, four varieties were: white stone; ochreous stone; white and red stone; and purple stone Their micromorphological characterization (skeleton, weathering plasma and porosity/cutan) is formed of grains and fragments of quartz and quartzite as well as by accesory minerals muscovite and feldspar (more or less altered), and some opaque. …”
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    Article
  4. 324

    Comparison study on operation and mechanical characteristics of liquid sodium thermoclinic heat storage tank using different solid filling materials by Gang Wang, Zheng Xie, Botong Wang, Jianqing Lin

    Published 2023-09-01
    “…This study evaluates and compares the effects of five actual solid filling materials (SFMs) on the operation and mechanical characteristics of liquid sodium thermoclinic heat storage (THS) tank, including the quartzite, high-temperature concrete, copper foam, silicon carbide and alumina ceramics. …”
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    Article
  5. 325

    Archaeology and art in context: Excavations at the Gunu Site Complex, Northwest Kimberley, Western Australia. by Mark W Moore, Kira Westaway, June Ross, Kim Newman, Yinika Perston, Jillian Huntley, Samantha Keats, Kandiwal Aboriginal Corporation, Michael J Morwood

    Published 2020-01-01
    “…Complex methods of making bifacially-thinned and pressure flaked quartzite projectile points emerged after 2.7 ka. Ochre pigments were common in both occupation phases, but evidence for occupation contemporaneous with the putative age of the oldest rock art styles was not discovered in the excavations. …”
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    Article
  6. 326

    Test Results of the Modulus of Elasticity of Concretes with Various Coarse Aggregates and Standard Recommendations by Jacek Góra, Wojciech Piasta

    Published 2022-12-01
    “…The results of tests of the modulus of elasticity and compressive strength of concrete with a wide range of w/c ratio from 0.70 to 0.28 made with 10 types of coarse aggregates made of igneous rocks (basalt, granite, granodiorite from Polish and Ukrainian mines) and sedimentary rocks (dolomite, quartzite, gravel). Concrete CEM I 42.5R and fine natural aggregate (quartz sand) were used. …”
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  7. 327

    Research on Intelligent Identification of Rock Types Based on Faster R-CNN Method by Xiaobo Liu, Huaiyuan Wang, Hongdi Jing, Anlin Shao, Liancheng Wang

    Published 2020-01-01
    “…In order to realize the precise and intelligent identification of rock types, the image data of peridotite, basalt, marble, gneiss, conglomerate, limestone, granite, magnetite quartzite are amplified. Under the target detection framework of Faster R-CNN deep learning, the extraction network based on simplified VGG16 is used to extract and learn features of rock images, and finally the rock type identification system is successfully trained. …”
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    Article
  8. 328

    Fire shifts the soil fertility and the vegetation composition in a natural high-altitude grassland in Brazil by Ione S. Hannas Salim, André F.S. Reis, Cassiano A.D. Welker, Maria Rita Scotti

    Published 2022-12-01
    “…The Serra da Calçada Mountain (Minas Gerais State, Brazil) hosts a natural grassland with high biodiversity and endemism, locally known as campo rupestre, which grows over hematite and quartzite outcrops, protecting several headwaters. …”
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    Article
  9. 329

    A Sui-Tang dynasty woman’s crown: analyzing form, glass and class by Jingnan Du, Tonia Eckfeld, Junchang Yang, Fengrui Jiang, Quanmin Zhang, Yanbing Shao

    Published 2022-04-01
    “…These identified the crown’s inlays as potash-lime glass, composed mainly of the raw materials: vein quartz or quartzite with potassium nitrate as flux. The inlays were sintered before embedding into gilt copper wire filigree. …”
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  10. 330

    In situ LA-ICPMS U-Pb dating of detrital zircons from the Cercadinho Formation, Minas Supergroup by Mônica de Cássia Oliveira Mendes, Lydia Maria Lobato, Victor Suckau, Cristiano Lana

    Published 2014-03-01
    “…U-Pb Laser Ablation Induced Coupled Mass Spectrometer (LA-ICPMS) analysis in detrital zircon from quartzite samples provided a new maximum depositional age for the Cercadinho Formation. …”
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  11. 331

    Thermo-physical characteristics of acrylic-based building external isolation panels produced from different geological materials by Karataş M. Ziya, Rizaoğlu Tamer

    Published 2018-12-01
    “…First, a mortar with 25% acrylic and 75% sand was applied to the EPS by a stripping method using sand size materials from various lithologies (granite, micaschist, basalt, quartzite, and pumice). To determine the optimum thickness, insulation panels containing plaster of 2, 4, 6, and 8 mm thickness were prepared for each lithology. …”
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  12. 332

    Pinturas rupestres y estructuras de piedra en las Sierras de Curicó (extremo noroccidental de Tandilia, Región Pampeana) by Patricia Madrid, Gustavo Politis, Daniel Poiré

    Published 2000-12-01
    “…<br>In the Curicó hills (also known as the La China hill), in the Olavarría district, rock art has been discovered on walls and in shelters in the quartzite tabular outcrops of the Balcarce Formation. …”
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  13. 333

    "La Cruz del tío Ignacio", yacimiento Achelense, en Belver de los Montes, Zamora by Luis BENITO DEL REY, José Manuel BENITO ÁLVAREZ

    Published 2009-12-01
    “…All these samples are standardized both by the form/size of the raw material (pebble of quartzite) and by technological and typological elements.…”
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  14. 334

    A multi-criteria decision analysis for groundwater potential evaluation in parts of Ibadan, southwestern Nigeria by Olawale Olakunle Osinowo, Kolawole Isaac Arowoogun

    Published 2020-10-01
    “…Regions underlain by quartzite/quartz schist rocks present medium-to-high groundwater resource potential, while regions underlain by migmatite and granite gneiss rocks mostly have very low–low groundwater resource potential. …”
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  15. 335

    Mineralogy, petrography, geochemistry of magnetite ore and sulfide minerals and the possible model of mineralization at Anomaly#3, Gol-e-Gohar, iron mine, Sirjan, Kerman by Moslem Badavi, Habibeh Atapour, Mussa Mohammadi

    Published 2019-08-01
    “…The anomly contains 643 million tonnes iron ore with an average grade of 52.70% Fe, 0.76% S and 0.11% P and is enclosed by alternation of quartzite, sericite schist, chlorite schist, talc schist, biotite schist, actinolite schist. …”
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  16. 336

    Interpretation of Archaeogeological and Lithological Characters for Stones Used in Korean Ancient Tombs around the Songpa of Seoul by Gyu Hye Lee, Jun Hyoung Park, Chan Hee Lee

    Published 2022-12-01
    “…By comparing the characteristics of the rocks collected from the provenance sites, we concluded that the quartzite used at the Gamil-dong tombs was from Cheonma Mountain, the gneiss at the Bangi-dong sites was from Daemo Mountain, and the amphibole schist and diabase at the Gamil-dong sites were from Cheonma Mountain. …”
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  17. 337

    L’industrie lithique taillée d’habitat énéolithique de Şoimuş 2 - Lângă sat by Mihaela-Maria Barbu

    Published 2013-12-01
    “…Ils sont de plusieurs types et de plusieurs sources: locales et d'import: silex, jaspe, menilite, quartzite, quartz, argilite, calcaire siliceux, grès siliceuse, obsidienne et chaille.…”
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    Article
  18. 338

    The thrust contact between the Canastra and Vazante groups in the Southern Brasília Belt: structural evolution, white mica crystallinity and implications for the Brasiliano orogeny... by Manuela de Oliveira Carvalho, Claudio de Morisson Valeriano, Pamela Alejandra Aparicio González, Gustavo Diniz Oliveira, Agnes Impiccini

    “…The upper thrust sheet consists of the Canastra Group (Paracatu formation): laminated sericite phyllites and carbonaceous phyllites interlayered with quartzite. The Braziliano orogeny resulted in four phases of contractional deformation, associated with low-grade metamorphism. …”
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  19. 339

    A PETROGRAPHICAL REVIEW OF METAMORPHIC ROCKS FROM CILETUH COMPLEX, IN WEST JAVA AND THEIR RELATED METAMORPHISM IN CENTRAL INDONESIA REGION by Prasetyo, Anton, Romora S, Jordan, Yeftamikha, ., Fransiskus L. B, ., Imam S, Nugroho

    Published 2016
    “…Based on petrographical analysis, metamorphic rocks in Gunung Badak area consist of Grt-Ms-Qz schist, Ms phyllite, quartzite and serpentinite. Meanwhile in Tegal Pamidangan area, consist of Ms-Qz phyllite and slate. …”
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    Article
  20. 340

    EBSD‐based criteria for coesite‐quartz transformation by Bidgood, AK, Parsons, AJ, Lloyd, GE, Waters, DJ, Goddard, RM

    Published 2020
    “…In this study, we conduct electron backscatter diffraction and misorientation analysis of palisade quartz inclusions in the coesite‐bearing pyrope quartzite from the Dora Maira massif in the Alps, and matrix‐scale palisade quartz in the Polokongka La granite from Tso Morari in the Ladakh Himalaya, in order to quantitatively define crystallographic characteristics of quartz after coesite. …”
    Journal article