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Petrography and Physicomechanical Properties of Rocks from the Ambela Granitic Complex, NW Pakistan
Petrography and physicomechanical properties of alkali granites, alkali quartz syenite, and nepheline syenite from Ambela, NW Pakistan, have been investigated. Whereas the alkali quartz syenite and most of the alkali granites are megaporphyritic, the nepheline syenite and some of the alkali granites...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Hindawi Publishing Corporation
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3684129/ https://www.ncbi.nlm.nih.gov/pubmed/23861654 http://dx.doi.org/10.1155/2013/349381 |
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author | Arif, Mohammad Bukhari, S. Wajid Hanif Muhammad, Noor Sajid, Muhammad |
author_facet | Arif, Mohammad Bukhari, S. Wajid Hanif Muhammad, Noor Sajid, Muhammad |
author_sort | Arif, Mohammad |
collection | PubMed |
description | Petrography and physicomechanical properties of alkali granites, alkali quartz syenite, and nepheline syenite from Ambela, NW Pakistan, have been investigated. Whereas the alkali quartz syenite and most of the alkali granites are megaporphyritic, the nepheline syenite and some of the alkali granites are microporphyritic. Their phenocryst shape and size and abundance of groundmass are also different. The values of unconfined compressive strength (UCS) are the lowest and highest for megaporphyritic alkali granite and alkali quartz syenite, respectively. However, all the four rock types are moderately strong. Correspondingly, their specific gravity and water absorption values are within the permissible range for use as construction material. The UCS for the alkali quartz syenite is the highest, most probably because (i) it has roughly equal amounts of phenocryst and groundmass, (ii) it displays maximum size contrast between phenocryst and groundmass, (iii) its phenocrysts are highly irregular, and (iv) it contains substantial amounts of quartz. |
format | Online Article Text |
id | pubmed-3684129 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Hindawi Publishing Corporation |
record_format | MEDLINE/PubMed |
spelling | pubmed-36841292013-07-16 Petrography and Physicomechanical Properties of Rocks from the Ambela Granitic Complex, NW Pakistan Arif, Mohammad Bukhari, S. Wajid Hanif Muhammad, Noor Sajid, Muhammad ScientificWorldJournal Research Article Petrography and physicomechanical properties of alkali granites, alkali quartz syenite, and nepheline syenite from Ambela, NW Pakistan, have been investigated. Whereas the alkali quartz syenite and most of the alkali granites are megaporphyritic, the nepheline syenite and some of the alkali granites are microporphyritic. Their phenocryst shape and size and abundance of groundmass are also different. The values of unconfined compressive strength (UCS) are the lowest and highest for megaporphyritic alkali granite and alkali quartz syenite, respectively. However, all the four rock types are moderately strong. Correspondingly, their specific gravity and water absorption values are within the permissible range for use as construction material. The UCS for the alkali quartz syenite is the highest, most probably because (i) it has roughly equal amounts of phenocryst and groundmass, (ii) it displays maximum size contrast between phenocryst and groundmass, (iii) its phenocrysts are highly irregular, and (iv) it contains substantial amounts of quartz. Hindawi Publishing Corporation 2013-06-02 /pmc/articles/PMC3684129/ /pubmed/23861654 http://dx.doi.org/10.1155/2013/349381 Text en Copyright © 2013 Mohammad Arif et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Arif, Mohammad Bukhari, S. Wajid Hanif Muhammad, Noor Sajid, Muhammad Petrography and Physicomechanical Properties of Rocks from the Ambela Granitic Complex, NW Pakistan |
title | Petrography and Physicomechanical Properties of Rocks from the Ambela Granitic Complex, NW Pakistan |
title_full | Petrography and Physicomechanical Properties of Rocks from the Ambela Granitic Complex, NW Pakistan |
title_fullStr | Petrography and Physicomechanical Properties of Rocks from the Ambela Granitic Complex, NW Pakistan |
title_full_unstemmed | Petrography and Physicomechanical Properties of Rocks from the Ambela Granitic Complex, NW Pakistan |
title_short | Petrography and Physicomechanical Properties of Rocks from the Ambela Granitic Complex, NW Pakistan |
title_sort | petrography and physicomechanical properties of rocks from the ambela granitic complex, nw pakistan |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3684129/ https://www.ncbi.nlm.nih.gov/pubmed/23861654 http://dx.doi.org/10.1155/2013/349381 |
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