Petrology, geochemistry, and source of the emplacement model of the Paleoproterozoic Tiébélé Granite Pluton, Burkina Faso (West-Africa): contribution to mineral exploration

Ilboudo, Hermann; Sawadogo, Sâga; Kagambèga, Nicolas; Remmal, Toufik

doi:10.1007/s00531-021-02039-3

Cited by 4 publications

(5 citation statements)

References 115 publications

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“…South of Godé, the outcropping Palaeoproterozoic formations are tonalites and biotite granites, which are clearly distinguished by their mineralogical compositions. Based on the classification diagrams used, the geochemical characteristics of the granitoids in the present study are similar to those studied in Burkina Faso by [6] in the eastern region, [23] in the central-eastern region, [7] in the north-eastern region. The tonalite (TP 09) belongs to the tonalite group described and analysed by [1] and its REE spectrum shows similarities with those of the Archean TTGs.…”

Section: Discussionsupporting

confidence: 76%

Petrographic and Geochemical Characteristics of the Granitoids in the South of Godé (North of the Square Degree of Léo-Burkina Faso, West Africa)

Yaméogo,

Zongo,

Ouiya

et al. 2024

IJG

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South of Godé, in the central-western region of Burkina Faso, granitoids of Paleoproterozoic age are similar to those of the Man/Leo shield. This study focused on the petrographic and geochemical characteristics of these granitoids, with the following results: 1) The tonalite that outcrops in the south-west of the study area belongs to the TTG group or first generation granitoids. They are most often ribboned at outcrop and have a geochemical signature close to that of Archean TTGs. Tonalite has a metaluminous character and the REE spectrum indicates that it may be derived from partial melting of basic magmatic rocks. 2) Biotite granites have no outcrop structure. They are weakly metaluminous to peraluminous and potassic to highly potassic. Their rare earth spectra indicate that they may be derived from the partial melting of TTG granitoids. 3) Geotectonic diagrams show that the granitoids studied to the south of Godé were emplaced in an active tectonic context similar to that of present-day subduction zones.

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Section: Discussionsupporting

confidence: 76%

Petrographic and Geochemical Characteristics of the Granitoids in the South of Godé (North of the Square Degree of Léo-Burkina Faso, West Africa)

Yaméogo,

Zongo,

Ouiya

et al. 2024

IJG

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“…Separated from the Archean Kénéma-Man domain by the Sassandra fault, the Baoulé-Mossi domain refers to the "Birimian" formations that occupy the eastern part of the rise. These terrains are consisting of belts of metavolcanic and metasedimentary rocks intruded by different generations of granitoids [17]- [22]. Whole rock geochemistry revealed that these different belts contain two main volcanic families.…”

Section: Geological Settingmentioning

confidence: 99%

Geochemistry of Mafic Rocks from the Birimian Basement of Doropo (Northeast of Côte d’Ivoire): Petrogenetic and Geodynamic Implications

Digbeu¹,

Kouamelan²,

Tshibubudze³

et al. 2022

OJG

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The northeastern region of Côte d'Ivoire is characterised by a granitic basement mainly composed of biotite granite rocks. According to mapping work in the Gbabédjou and Doropo areas, these Birimian granitoids are cut by gabbro dykes and amphibolite enclaves, which are the subject of this study. In order to better understand the role and the implication of mafic rocks in the Doropo basement emplacement, a multidisciplinary methodology integrating microscopic observations and geochemical analyses of major and trace elements was carried out on 4 samples considered representative of the outcrops studied. Green hornblende, clinopyroxene, and accessory sphene minerals are found in mafic mineral phases, according to petrographic research. Whole-rock analyses reveal that mafic samples with TiO 2 contents < 2% are poor in Ti and have both calc-alkaline and tholeiitic rock affinities. They are metaluminous with A/CNK > 1.1 ratios giving them an orogenic granite nature (I-type). Their REE patterns are moderately fractionated (La/Sm) N = 2.66 -6.13 and (La/Yb) N = 11.17 -43.70) with a very negative Eu anomaly (Eu/Eu* = 0.75 -0.97). The multi-element diagrams are characterized by negative Nb-Ta anomalies and geotectonic studies have identified them as volcanic arc formations. All these characteristics allowed us to distinguish the Doropo mafic rocks as formations originating from the juvenile continental crust, emplaced under the Archean tectonics model with significant crustal contamination in the source. Magma driven by mantle diapir has been injected at the base of the continental crust and the heat induces the partial melting of the overlying How to cite this paper:

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“…However, in Mangodara, the structural position of the tonalitic-trondhjemitic gneiss under the granodioritic gneiss is not consistent with this such a scenario, as a fractionated magma tends to segregate toward the upper part of the partially molten zone or to migrate out of the partially molten zone to intrude the upper crust (Hildreth, 2004;Jackson et al, 2018Jackson et al, , 2003Vanderhaeghe, 2009). A compliant model assimilates the tonalitic-trondhjemitic gneiss to a tonalitic melt coming from a deeper zone of partial melting affecting a predominantly mafic protolith (such as Birimian amphibolites) (Ilboudo et al, 2021), which evolves into a mush composed of clustered residual plagioclase. Partial melting of amphibolite produces a residue dominated in composition by plagioclase and pyroxene (Fig.…”

Section: Amphibolites As Sources Of the Tonalitic-trondhjemitic Gneissmentioning

confidence: 99%

“…However, U-Pb geochronology on zircon from granitoid and gneisses from these complexes did not yield any Archean age, but ranges from 2300 to 2050 Ma (Anum et al, 2015;Castaing et al, 2003;De Kock et al, 2011;Doumbia et al, 1998;Gasquet et al, 2003;Grenholm et al, 2019a;Hirdes et al, 1996;Ilboudo et al, 2021;Parra-Avila et al, 2017;Petersson et al, 2016;Sakyi et al, 2014;Soumaila et al, 2008;Tapsoba et al, 2013;Tshibubudze et al, 2015Wane et al, 2018). These ages span the entire Birimian cycle, from the Eoeburnean or Pre-Eburnean phase (2260( -2150 to the Eburnean orogeny (2150-2050 Ma), which is constrained by U-Pb in zircon from Birimian metavolcanites and plutonic rocks intrusive in greenstone belts across the Baoule-Mossi domain (Grenholm et al, 2019a;Lambert-Smith et al, 2016;Parra-Avila et al, 2017 and references therein).…”

Section: Introductionmentioning

confidence: 97%

Petrogenetic links between rare metal-bearing pegmatites and TTG gneisses in the West African Craton: The Mangodara district of SW Burkina Faso

Bonzi

Vanderhaeghe

Lichtervelde

et al. 2021

Precambrian Research

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We describe the geological context of rare metal-bearing pegmatites from the Mangodara district (South-West Burkina Faso, Paleoproterozoic West African Craton) and discuss their petrogenesis and links with the host rocks. The Mangodara district exposes a gneiss-granitoid complex structured in a regional-scale dome, mantled by granodioritic gneiss enclosing rafts of amphibolite, micaschist and paragneiss, and cored by tonalitic to trondhjemitic gneisses. These gneisses enclose granitoid plutons, and four populations of rare metal-bearing pegmatites: titanite-allanite-, apatite-zircon-, garnetcolumbite (Li, Nb) and garnet-REE (Ti, Y, HREE)-bearing varieties.2 Rafts of migmatitic amphibolite, micaschist and paragneiss are chemically equivalent to nearby Birimian greenstone belts. An origin of the gneiss-granitoid complex by partial melting is suggested by diffuse contacts of rafts with the gneisses as well as the presence of garnet-bearing or hornblendebearing leucosome in paragneiss and in amphibolites, respectively. Textural continuity between pegmatites and granitic veins concordant to the foliation of the gneisses point to syntectonic segregation of the pegmatite-forming magmas.The compositions of gneisses and plutonic rocks spread between a Na-rich pole and a K-rich pole.Granodioritic gneiss, hornblende-biotite granodiorite and potassic biotite granitoids define a K-rich series attributed to relatively low-pressure high-degree partial melting of dominantly paragneiss, which accounts for low to absent LILE and HFSE fractionation compared to the paragneiss. Tonalitictrondhjemitic gneiss, a trondhjemite and a peraluminous two-mica tonalite belong to a Na-rich series characterized by low K content and strong depletion in REE and HFSE, which might reflect plagioclase clustering after partial melting at a relatively high pressure of amphibolite, and fractionation of HFSE-REE-bearing minerals.U-Pb dating of zircon from a titanite-allanite-bearing pegmatite at 2094.3 ± 8.8 Ma and of apatite from tonalitic-trondhjemitic gneiss, apatite-zircon-bearing pegmatite and granodioritic gneiss at 2094 ± 21 Ma, 2055 ± 20 Ma, and 2041 ± 33 Ma respectively, confirm that partial melting, melt segregation and crystallization-cooling occurred during the Eburnean orogeny.Based on these data, we propose that (i) titanite-allanite-and apatite-zircon-bearing pegmatites result from syntectonic segregation of residual melt during crystallization of the tonalitic-trondhjemitic gneiss, (ii) garnet-columbite-bearing pegmatites originate from syntectonic melt segregation from the migmatitic paragneiss, and (iii) garnet-REE-bearing pegmatites derive from segregation of a residual melt within the granodioritic gneiss.

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Petrology, geochemistry, and source of the emplacement model of the Paleoproterozoic Tiébélé Granite Pluton, Burkina Faso (West-Africa): contribution to mineral exploration

Cited by 4 publications

References 115 publications

Petrographic and Geochemical Characteristics of the Granitoids in the South of Godé (North of the Square Degree of Léo-Burkina Faso, West Africa)

Petrographic and Geochemical Characteristics of the Granitoids in the South of Godé (North of the Square Degree of Léo-Burkina Faso, West Africa)

Geochemistry of Mafic Rocks from the Birimian Basement of Doropo (Northeast of Côte d’Ivoire): Petrogenetic and Geodynamic Implications

Petrogenetic links between rare metal-bearing pegmatites and TTG gneisses in the West African Craton: The Mangodara district of SW Burkina Faso

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Petrology, geochemistry, and source of the emplacement model of the Paleoproterozoic Tiébélé Granite Pluton, Burkina Faso (West-Africa): contribution to mineral exploration

Cited by 4 publications

References 115 publications

Petrographic and Geochemical Characteristics of the Granitoids in the South of God&#233; (North of the Square Degree of L&#233;o-Burkina Faso, West Africa)

Petrographic and Geochemical Characteristics of the Granitoids in the South of God&#233; (North of the Square Degree of L&#233;o-Burkina Faso, West Africa)

Geochemistry of Mafic Rocks from the Birimian Basement of Doropo (Northeast of C&#244;te d’Ivoire): Petrogenetic and Geodynamic Implications

Petrogenetic links between rare metal-bearing pegmatites and TTG gneisses in the West African Craton: The Mangodara district of SW Burkina Faso

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Petrographic and Geochemical Characteristics of the Granitoids in the South of Godé (North of the Square Degree of Léo-Burkina Faso, West Africa)

Petrographic and Geochemical Characteristics of the Granitoids in the South of Godé (North of the Square Degree of Léo-Burkina Faso, West Africa)

Geochemistry of Mafic Rocks from the Birimian Basement of Doropo (Northeast of Côte d’Ivoire): Petrogenetic and Geodynamic Implications