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INTERNATIONAL JOURNAL OF NOVEL RESEARCH AND DEVELOPMENT International Peer Reviewed & Refereed Journals, Open Access Journal ISSN Approved Journal No: 2456-4184 | Impact factor: 8.76 | ESTD Year: 2016 Scholarly open access journals, Peer-reviewed, and Refereed Journals, Impact factor 8.76 (Calculate by google scholar and Semantic Scholar | AI-Powered Research Tool) , Multidisciplinary, Monthly, Indexing in all major database & Metadata, Citation Generator, Digital Object Identifier(DOI) |
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| Paper Title: | Petrographic characteristics of the younger granites of Tirmini (southeastern Damagaram, Niger) |
| Authors Name: | Lawali Idi Chamsi , Badamassi Kadri Mahaman Mansour , Mallam Mamane Hallarou , Ahmed Yacouba |
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IJNRD_215600
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| Published Paper Id: | IJNRD2403412 |
| Published In: | Volume 9 Issue 3, March-2024 |
| DOI: | |
| Abstract: | This work focuses on the petrographic characterization of the Tirmini anorogenic ring complex (southeastern Niger). The latter in the pan-African province of Damagaram-Mounio, corresponding to the northeastern termination of the Benin-Niger Shield. Very little geological data is available on the Tirmini complex. The only lithological data available are those of Mignon (1970). The aim of this study is to present the new petrographic data obtained at Tirmini to clarify the magmatic suites. The methodology used is based on macroscopic and microscopic (optical) data, supported by scanning electron microscopy (SEM) data. The petrographic results obtained revealed two magmatic lineages: (i) alkaline and (ii) peralkaline. The first lineage is characterised by a petrographic sequence ranging from alkaline rhyolite to alkaline microgranite, alkaline granite, and alkaline quartz syenite. The second lineage of peralkaline chemism, evolves from comenditic rhyolite to peralkaline microgranite and peralkaline granite. This petrographic evolution reflects the three-phase emplacement of younger granites, typical of a subsidence petrogenetic model: volcanic phase, hypovolcanic phase and plutonic phase. The mineralogical results (MO and SEM) obtained include orthoclase, aegirine, arfvedsonite, annite and quartz associated with accessory minerals (ilmenite, fluor-apatite, zircon, and monazite). The mineralogical evolution from the alkaline line to the peralkaline line is marked by an increase in the content of sodium minerals (arfvedsonite and aegyrine). |
| Keywords: | Younger granites, Tirmini, Damagaram-Mounio, Niger-Nigeria province, lineage. |
| Cite Article: | "Petrographic characteristics of the younger granites of Tirmini (southeastern Damagaram, Niger)", International Journal of Novel Research and Development (www.ijnrd.org), ISSN:2456-4184, Vol.9, Issue 3, page no.e93-e99, March-2024, Available :http://www.ijnrd.org/papers/IJNRD2403412.pdf |
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2456-4184 | IMPACT FACTOR: 8.76 Calculated By Google Scholar| ESTD YEAR: 2016 An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 8.76 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator |
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Published Paper ID:IJNRD2403412 Registration ID: 215600 Published In: Volume 9 Issue 3, March-2024 DOI (Digital Object Identifier): Page No: e93-e99 Country: -, -, India Research Area: Engineering Publisher : IJ Publication Published Paper URL : https://www.ijnrd.org/viewpaperforall?paper=IJNRD2403412 Published Paper PDF: https://www.ijnrd.org/papers/IJNRD2403412 |
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ISSN: 2456-4184
Impact Factor: 8.76 and ISSN APPROVED
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