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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...

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Autores principales: Arif, Mohammad, Bukhari, S. Wajid Hanif, Muhammad, Noor, Sajid, Muhammad
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2013
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.
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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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