Abstract
The sedimentary facies of the investigated area of the northeastern Voltaian, with respect to the
sedimentary structures, composition as well as the depositional environments, can be classified
into six (6) facies. The sediments are deposited dominantly in a shallow marine environments with
records of shoreface/foreshore, Aeolian and tidal environments. The sediments were deposited in
the various environments by both low and high energy media. The area shows a shallowing and
thickening upward facies sequence. The paleocurrents of the sediments show a dominant
southwestern source with minor contribution of sediments from the south and south east eastern
parts.
The sediments are composed of quartz, dominantly monocrystalline with undulatory extinction
(strain) with minor polycrystalline, potassium feldspars, plagioclase feldspars, micas, sericites as
the matrix, zircons and some accessory minerals from the petrographic study of the collected
samples. The sediments studied are moderately – highly weathered in a relatively gentle – flat
terrain. The composition of the clastic sediments shows high temperature regimes, dry/arid –
moderate humid climatic conditions in a most probable poor rainfall environments. The sediments
of the studied area from petrography, are the weathering products of granitic rocks, granitic
gneisses and sedimentary rocks. The source area of the investigated area can be most likely traced
to the adjacent Birimian Supergroup. Geochemically, the studied samples of the Gambaga –
Nakpanduri area can be grouped into sublitharenite, subarkose and quartz arenites using log
(Fe2O3/K2O) versus log (SiO2/Al2O3) bivariate plot. The weathering indices, thus, Chemical Index
of Alteration (CIA), Chemical Index of Weathering (CIW), Thorium – Uranium ratio (Th/U) and
Index of Compositional Variability (ICV) all supports a moderate – highly weathered and matured
(ICV
MAHAMUDA, A (2021). The Sedimentology Of Gambaga Massifs Of The Northeastern Voltaian, Ghana.. Afribary. Retrieved from https://tracking.afribary.com/works/the-sedimentology-of-gambaga-massifs-of-the-northeastern-voltaian-ghana
MAHAMUDA, ABU "The Sedimentology Of Gambaga Massifs Of The Northeastern Voltaian, Ghana." Afribary. Afribary, 18 Apr. 2021, https://tracking.afribary.com/works/the-sedimentology-of-gambaga-massifs-of-the-northeastern-voltaian-ghana. Accessed 09 Nov. 2024.
MAHAMUDA, ABU . "The Sedimentology Of Gambaga Massifs Of The Northeastern Voltaian, Ghana.". Afribary, Afribary, 18 Apr. 2021. Web. 09 Nov. 2024. < https://tracking.afribary.com/works/the-sedimentology-of-gambaga-massifs-of-the-northeastern-voltaian-ghana >.
MAHAMUDA, ABU . "The Sedimentology Of Gambaga Massifs Of The Northeastern Voltaian, Ghana." Afribary (2021). Accessed November 09, 2024. https://tracking.afribary.com/works/the-sedimentology-of-gambaga-massifs-of-the-northeastern-voltaian-ghana