Caractéristiques pétrologiques et géochimiques des roches magmatiques d’El Aouana, NE algérien

Hamlaoui, Hamid; Laouar, Rabah; Bouhlel, Salah; Boyce, Adrian J.

doi:10.3989/egeol.43391.510

Cited by 3 publications

(2 citation statements)

References 58 publications

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“…The decrease of Ni versus Zr is compatible with the fractionation of ferromagnesians (pyroxene and amphibole) in these rocks. This element could also be associated with MgO and FeOt in pyroxenes (Hamlaoui et al, 2020;Kpanzou, 2023).…”

Section: Fractional Crystallizationmentioning

confidence: 99%

Petrographic and Geochemical Characteristics of the Akaba Igneous Massif from the Pan-African Orogen in Togo, West Africa

2023

JEES

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The Dahomeyide orogen in Togo and adjoining parts of southeast-Ghana and Benin represents the West Africa Craton (WAC) suture into northwest Gondwana. The suture zone is a narrow and lithologically diverse region with high pressure granulites complexes. The Akaba massif located in the central part of Togo, belongs to this suture zone. Petrographical and whole rock geochemical analyses are used to evaluate the characteristics, petrogenesis and mode of emplacement of the Akaba massif. The new data suggest that the Akaba massif is built by layered amphibolites, garnet-free granulites and metapyroxenites. These rocks were equilibrated under granulite facies conditions and subsequently partially retrogressed to the amphibolite facies. Geochemical suggest that the granulites may have preserved the geochemical imprints of their igneous protoliths. They display tholeiitic affinity, slightly enriched LREE, no Eu anomaly and negative anomalies in Nb and Zr indicate subduction zone magmatism. These features are consistent with protoliths of N-MORB affinities. The Akaba massif rocks were emplaced up in an oceanic arc environment and likely originated from a metasomatized mantle.

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Section: Fractional Crystallizationmentioning

confidence: 99%

Petrographic and Geochemical Characteristics of the Akaba Igneous Massif from the Pan-African Orogen in Togo, West Africa

2023

JEES

View full text Add to dashboard Cite

show abstract

“…The decrease in Ni and Cr contents vs. Zr is consistent with the fractionation of ferromagnesians (pyroxene and amphibole) in these rocks. These elements could also be associated with MgO and FeOt in pyroxenes (Hamlaoui et al, 2020;Kpanzou, 2023).…”

Section: Fractional Crystallizationmentioning

confidence: 99%

Petrographic and Geochemical Characteristics of the Djabatoure Massif Metamagmatites from the Pan-African Orogen in Central Togo, West Africa

Malibida Kpanzou,

Alayi,

Agbossoumondé

et al. 2023

ESJ

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The Dahomeyide orogen, in Togo and adjoining parts of southeast Ghana and Benin, represents the suture of West Africa Craton (WAC) into northwest Gondwana. The suture zone corresponds to a narrow and lithologically diverse area with high pressure granulite complexes. The Djabatoure massif, located in the central part of Togo, belongs to the suture zone. The aim of this paper is to present the petrographic and geochemical characteristics of the Djabatoure massif in order to better understand the geodynamic evolution of the Dahomeyide belt in Togo. The methodology implemented is based on a synthesis of previous works, a petrographic study of 20 thin sections, and a geochemical study through discrimination diagrams of 15 rock samples. Results show that the Djabatoure massif is composed of granulites, pyroxenites, amphibolites, talcschists and gneisses. These rocks were equilibrated under granulite facies conditions and subsequently partially retrogressed to the amphibolite facies. The Djabatoure massif rocks also display tholeiitic affinity, enriched LREE, and negative anomalies in Nb, Zr and Ti; all these characteristics indicate subduction zone magmtism. These features are consistent with protoliths of tholeiites, N-MORB, and volcanic arc basalts affinities. The Djabatoure massif rocks were emplaced in an oceanic environment and likely originated from a metasomatized mantle.

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Enhancing abiotic stress management for agricultural sustainability: IoT-driven real-time monitoring of tomato turgor pressure and with comprehensive assessments of growth parameters, crop yield qualities, and nutrient contents

Zouari,

Khaskhoussy,

Zarai

et al. 2024

Euro-Mediterr J Environ Integr

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Caractéristiques pétrologiques et géochimiques des roches magmatiques d’El Aouana, NE algérien

Cited by 3 publications

References 58 publications

Petrographic and Geochemical Characteristics of the Akaba Igneous Massif from the Pan-African Orogen in Togo, West Africa

Petrographic and Geochemical Characteristics of the Akaba Igneous Massif from the Pan-African Orogen in Togo, West Africa

Petrographic and Geochemical Characteristics of the Djabatoure Massif Metamagmatites from the Pan-African Orogen in Central Togo, West Africa

Enhancing abiotic stress management for agricultural sustainability: IoT-driven real-time monitoring of tomato turgor pressure and with comprehensive assessments of growth parameters, crop yield qualities, and nutrient contents

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