Late Pan-African tectonics and origin of gold mineralization and rare-metal pegmatities in the Kushaka schist belt, northwestern Nigeria

Garba, I.

doi:10.4314/jmg.v38i1.18768

Cited by 22 publications

(21 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The pegmatites are associated with the Older Granites and they were initially thought to occur only in an NE-NS zone from Ago-Iwoye in the south-west through Wamba-Jama'a to Bauchi in the north-east. However other occurrences have been found around Zuru-Gusau in the north-west (Garba, 2002;Okunlola, 2005) and Obudu area (Ekwueme and Matheis, 1995). The magnetic data was very useful in determining the contact between the sediments and the basement.…”

Section: Discussionmentioning

confidence: 94%

“…The Wamba e Nassarawa Egon area has been known for mineralized pegmatites. The late Pan-African granites that are host to rare-metal pegmatites and gold bearing veins have been associated with the fractures in the Pan-African mobile belts (Kuster, 1990;Ekwueme and Matheis, 1995;Garba, 2002;Okunlola, 2005). The end of the Pan-African tectonic event is marked by a conjugate fracture system of strike-slip faults (Ball, 1980).…”

Section: Discussionmentioning

confidence: 97%

See 1 more Smart Citation

Structural study of Wamba and Environs, north-central Nigeria using aeromagnetic data and NigeriaSat-X image

Ogunmola¹,

Gajere²,

Ayolabi

et al. 2015

Journal of African Earth Sciences

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 94%

Section: Discussionmentioning

confidence: 97%

Structural study of Wamba and Environs, north-central Nigeria using aeromagnetic data and NigeriaSat-X image

Ogunmola¹,

Gajere²,

Ayolabi

et al. 2015

Journal of African Earth Sciences

View full text Add to dashboard Cite

“…The closing stages of Pan African orogeny were marked by series of transcurrent faults (Kuster, 1990, Garba, 2002. Therefore, mantle and lower crust materials may have risen to higher crustal levels through these deep seated fault systems.…”

Section: Tectonic Environments and Rare Metal Mineralization In Pegmamentioning

confidence: 99%

“…The spatial association of the pegmatites of Kushaka area and the Pan-African transcurrent fault was established by Garba (2002). Inferences on the sources of rare metal have been from information deduced from radioactive isotopes and structural observations.…”

Section: Introductionmentioning

confidence: 99%

Tectonic environments and rare metal mineralization in pegmatites of Komu Area, Southwestern Nigeria

Adetunji¹,

Ocan²

2010

Glo Jnl Geo Sci

View full text Add to dashboard Cite

The discrimination diagrams: Rb versus Nb +Y and Nb versus Y, and Th/Ta ratio combined with field observations and empirical information from the literature were used to infer the tectonic environments and sources of the rare metal mineralization in the pegmatites of Komu area, southwestern Nigeria.The discrimination diagrams show that the pegmatites were mainly emplaced in tectonic environments similar to those of syn-collisional granites (Syn COG) and within plate granites (WPG). Volcanic arc environment was not pronounced. The emplacement of the pegmatites was structurally controlled by the predominantly Northeast (NE)-Southwest (SW) and North northeast (NNE)-South southwest (SSW) fault systems that were developed during the Pan-African orogeny. The upwelling of the mantle at the beginning and faulting systems associated with the active and closing stages of the Pan-African orogeny elevated rare metals from the mantle to higher crustal levels where they were incorporated into the pegmatitic fluids.The Th/Ta ratios of less than 1.00 which resemble that of the oceanic ridge tectonic environment is attributable to the upwelling of mantle material. The variation in the tectonic environments of the pegmatites may be attributed to the long span of the Pan-African orogeny (750-450 Ma).

show abstract

“…Several workers on the Nigerian Pan-African Belt have studied the origin, structural elements, geochemistry, petrology and among others. [2] reported that the last stage of the Pan-African orogeny is represented by conjugate fracture system of strike-slip faults. [3] estimated the feldspar resort around Odobola at about 119 million tons.…”

Section: Introductionmentioning

confidence: 99%

Petrology of Exposed Basement Rocks around Shintaku of North Central Nigeria

Odedede

2013

J. Sci. Res.

View full text Add to dashboard Cite

The study area is part of the Basement Complex of North Central Nigeria. The study aims at identifying the rock types and interpretation of the structural elements. The major rock units in the area comprises of porphyritic granite, gneiss and schist. Structural evidence shows that the rocks are deformed and where intruded by the granite. Petrographic analysis reveals the existence of feldspar phenocrysts in a groundmass of quartz and biotite. The granite is composed of quartz (25-35%), plagioclase (15-20%), orthoclase (10-20%), microcline (5-25%), biotite (15-20%) and other accessory minerals. The granites displayed a porphyritic texture while the schist and gneisses exhibit planar and linear structures. Variation in structural trend and mineralogical composition is due to the series of deformational activities which has affected the rocks during geologic time.

show abstract

Late Pan-African tectonics and origin of gold mineralization and rare-metal pegmatities in the Kushaka schist belt, northwestern Nigeria

Cited by 22 publications

References 0 publications

Structural study of Wamba and Environs, north-central Nigeria using aeromagnetic data and NigeriaSat-X image

Structural study of Wamba and Environs, north-central Nigeria using aeromagnetic data and NigeriaSat-X image

Tectonic environments and rare metal mineralization in pegmatites of Komu Area, Southwestern Nigeria

Petrology of Exposed Basement Rocks around Shintaku of North Central Nigeria

Contact Info

Product

Resources

About