Готові списки джерел за темами / Karagwe–Ankole Belt

Добірка наукової літератури з теми "Karagwe–Ankole Belt"

Автор: Grafiati
Опубліковано: 6 вересня 2023

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Статті в журналах з теми "Karagwe–Ankole Belt"

1

Nambaje, Claude, M. Satish-Kumar, Ian S. Williams, Toshiro Takahashi, and K. Sajeev. "Granitic rocks from Rwanda: Vital clues to the tectonic evolution of the Karagwe–Ankole Belt." Lithos 404-405 (December 2021): 106490. http://dx.doi.org/10.1016/j.lithos.2021.106490.

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2

Tumukunde, Thomas d'Aquin, and Adam Piestrzynski. "Vein-type tungsten deposits in Rwanda, Rutsiro area of the Karagwe-Ankole Belt, Central Africa." Ore Geology Reviews 102 (November 2018): 505–18. http://dx.doi.org/10.1016/j.oregeorev.2018.09.015.

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3

Van Daele, Johanna, Niels Hulsbosch, Stijn Dewaele, and Philippe Muchez. "Metamorphic and metasomatic evolution of the Western Domain of the Karagwe-Ankole Belt (Central Africa)." Journal of African Earth Sciences 165 (May 2020): 103783. http://dx.doi.org/10.1016/j.jafrearsci.2020.103783.

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4

De Clercq, S., D. Chew, G. O'Sullivan, T. De Putter, J. De Grave, and S. Dewaele. "Characterisation and geodynamic setting of the 1 Ga granitoids of the Karagwe-Ankole belt (KAB), Rwanda." Precambrian Research 356 (May 2021): 106124. http://dx.doi.org/10.1016/j.precamres.2021.106124.

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5

Villeneuve, Michel, Nandefo Wazi, Christian Kalikone, and Andreas Gärtner. "A Review of the G4 “Tin Granites” and Associated Mineral Occurrences in the Kivu Belt (Eastern Democratic Republic of the Congo) and Their Relationships with the Last Kibaran Tectono-Thermal Events." Minerals 12, no. 6 (June 8, 2022): 737. http://dx.doi.org/10.3390/min12060737.

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Анотація:
The Mesoproterozoic Kibaran belts host large amounts of mineral resources such as cassiterite, wolframite, gold, and columbite-group minerals (“coltan”), all of them in high demand for new technologies and related industries. Most of these mineral occurrences are linked to the latest Mesoproterozoic to early Neoproterozoic G4 granitoid intrusions, also termed “tin(-bearing) granites”. Three main parts constitute the Kibaran belts: the Kibaride Belt (KIB) in the south, the Karagwe-Ankole Belt (KAB) in the east, and the Kivu Belt (KVB) in the west. Geological detail concerning the metallogeny of the KVB, which hosts large parts of these mineral resources, is very sparse. Previously, there was an assumed time gap of about 200 Ma between the formation of the last Kibaran terranes (1250 to 1200 Ma) and the emplacement of the G4 granites (ca. 1050 to 970 Ma), which generated the main mineralizations. Recent studies dated the last Kibaran tectono-thermal events younger than 1120 to 1110 Ma, which gave evidence for a drastic reduction in this time gap. Thus, the two newly recognized tectono-thermal events have likely contributed to the remobilization of older mineralized granites. These new data allow us to link the G4 granitoids and the associated mineralizations with the terminal Kibaran orogeny. However, the G4 emplacement and its relationships with older granites, with their host rocks and associated mineralizations, are not yet understood. Here, the main occurrences of the KVB are reviewed, and comparisons with similar mineralizations in the adjacent KAB are undertaken to improve our understanding on these complex relationships.
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6

Dewaele, S., F. De Clercq, N. Hulsbosch, K. Piessens, A. Boyce, R. Burgess, and Ph Muchez. "Genesis of the vein-type tungsten mineralization at Nyakabingo (Rwanda) in the Karagwe–Ankole belt, Central Africa." Mineralium Deposita 51, no. 2 (August 23, 2015): 283–307. http://dx.doi.org/10.1007/s00126-015-0608-x.

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7

Debruyne, David, Niels Hulsbosch, Jorik Van Wilderode, Lieve Balcaen, Frank Vanhaecke, and Philippe Muchez. "Regional geodynamic context for the Mesoproterozoic Kibara Belt (KIB) and the Karagwe-Ankole Belt: Evidence from geochemistry and isotopes in the KIB." Precambrian Research 264 (July 2015): 82–97. http://dx.doi.org/10.1016/j.precamres.2015.04.001.

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8

Nambaje, Claude, Stephen M. Eggins, Gregory M. Yaxley, and K. Sajeev. "Micro-characterisation of cassiterite by geology, texture and zonation: A case study of the Karagwe Ankole Belt, Rwanda." Ore Geology Reviews 124 (September 2020): 103609. http://dx.doi.org/10.1016/j.oregeorev.2020.103609.

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9

Ni, Pei, Wen-Sheng Li, Jun-Yi Pan, Jian-Ming Cui, Kai-Han Zhang, and Yan Gao. "Fluid Processes of Wolframite-Quartz Vein Systems: Progresses and Challenges." Minerals 12, no. 2 (February 12, 2022): 237. http://dx.doi.org/10.3390/min12020237.

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Анотація:
Wolframite-quartz vein-type tungsten deposits constitute the world’s major tungsten resources and are integral to tungsten production. A major share of this mineralization product is found in Southeast China, with other significant resources in the Central Andean belt, the East Australian belt, the Karagwe-Ankole belt and the European Variscan belt. In the past few decades, extensive studies on wolframite-quartz vein-type tungsten deposits have been conducted, but many key questions concerning their ore-forming fluid and metallogenic mechanism remain unclear. Additionally, a summary work on the global distribution and fluid characteristics of these wolframite-quartz vein-type tungsten deposits is still lacking. In this contribution, recent progress regarding several major issues related to the fluid processes involved in the forming of these veins are overviewed, and challenges in terms of future research are proposed. These issues include the nature of ore-forming fluids, their sources, and their transportation and wolframite deposition mechanisms. In particular, the affinity between veins and the exposed granitic intrusion from the Zhangtiantang-Xihuashan ore district, where an as-yet undiscovered deep intrusion, rather than the exposed granitic intrusion, was probably responsible for the formation of the wolframite-quartz veins, is reevaluated. This study also reviews the existing fluid and melt inclusion data from several tungsten deposits to address whether the mineralization potential of the magmatic-hydrothermal systems was directly correlated with the metal contents in the granitic melts and the exsolving fluids.
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10

TURIMUMAHORO, Denis, Niels HULSBOSCH, Louis NAHIMANA, Stijn DEWAELE, and Philippe MUCHEZ. "Géochimie des muscovites comme indicateur du fractionnement des pegmatites de la région de Kabarore-Mparamirundi (nord-ouest du Burundi, Afrique centrale) [Geochemical signature of muscovites as pathfinder for fractionation of pegmatites in the Kabarore-Mparamirundi area (northwestern Burundi, Central Africa)]." Geologica Belgica 23, no. 1-2 (May 20, 2020): 53–67. http://dx.doi.org/10.20341/gb.2020.005.

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Анотація:
The Kabarore-Mparamirundi area hosts numerous pegmatites spatiotemporally related to leucogranites dated at 986 ± 10 Ma in Karagwe-Ankole belt. The deposits are intensively exploited for columbite-tantalite and cassiterite. Alkali metals in muscovite (Rb 370–7590 ppm, Cs 8–1470 ppm) are modeled by Rayleigh fractional crystallization from a parental leucogranitic composition (K 4.1 wt%, Rb 321 ppm and Cs 9 ppm). The power law declining behavior of the ratio K/Rb versus Cs indicates the Rayleigh fractional crystallization as the main process of differentiation of the various pegmatite facies. Moreover, the continuous trend from granite to the most evolved, exploited pegmatites demonstrates a co-genetic link among them. The fractionation model shows that unmined and abandoned pegmatites are less fractionated (less than 94% of fractionation) while mined pegmatites are highly fractionated and constitute fractionated products of more than 94% of the initial leucogranite composition. The Rb, Cs, Ta, Sn and Li elements in muscovite can be used as a valuable tool in the exploration of fertile and sterile pegmatites in this area.
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Дисертації з теми "Karagwe–Ankole Belt"

1

Ikingura, Justinian Rwezaula Carleton University Dissertation Geology. "Geology, geochemistry and genesis of stanniferous granites in the southern part of the Karagwe-Ankolean belt, NW Tanzania." Ottawa, 1989.

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Тези доповідей конференцій з теми "Karagwe–Ankole Belt"

1

De Clercq, Shana, Stijn Dewaele, Johan De Grave, Thierry De Putter, and Frank Vanhaecke. "Unravelling the Proterozoic history of the granite intrusion of the Karagwe Ankole belt in Rwanda." In Goldschmidt2021. France: European Association of Geochemistry, 2021. http://dx.doi.org/10.7185/gold2021.5632.

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2

Furaha, Ghislain, Louis Nahimana, Gérard Nimpagaritse, Damien Delvaux, Stijn Dewaele, Brice J. Lacroix, and Dennis Lahondes. "FIRST ATTEMPT ON THE STRUCTURAL AND LITHOSTRATIGRAPHIC CONTROL OF SN-NB-TA-W AND AU MINERALIZATION IN THE KARAGWE-ANKOLE BELT (NE BURUNDI, EAST AFRICA)." In GSA 2020 Connects Online. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020am-359202.

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