Fragment of a central-type large structure located in southern Uganda and its metallogenic value
https://doi.org/10.32454/0016-7762-2019-6-18-25
Abstract
For the southern regions of Uganda, the metallogenic value of the regional arc belt of dikes of the main and ultrabasic composition was considered. It is shown that it is part of the arc sector of a large central-type structure with a diameter of about 700 km. It had a long development in the Riphean sequence of tectono-magmatic activation. This structure was formed over 1,37 billion years ago and reformed approximately 1 billion years ago and at the end of the Riphean sequence (0,5—0,6 billion years ago).This structure includes all major deposits of Sn, W, Na, Nb, Ni, REE and Au in Burundi, Congo, Rwanda, Tanzania and Uganda. In Uganda, the Sn, W and rare metals fields are controlled by small intrusions of granite with an age of 1 billion years and crossing nodes of radial faults, which are the central-type structures of small order that are included in the central part of the allocated megastructure. Materials in the relationship of ore-grade gold mineralisation with the crossing nodes of large arc, radial and overfault-shift faults are given.
About the Authors
P. A. Ignatov
Sergo Ordzhonikidze Russian State University for Geological Prospecting
Russian Federation
23, Miklukho-Maklaya str., Moscow 117997
Russian Federation
23, Miklukho-Maklaya str., Moscow 117997
A. A. Ivanov
Sergo Ordzhonikidze Russian State University for Geological Prospecting
Russian Federation
23, Miklukho-Maklaya str., Moscow 117997
Russian Federation
23, Miklukho-Maklaya str., Moscow 117997
A. V. Abramov
Sergo Ordzhonikidze Russian State University for Geological Prospecting
Russian Federation
23, Miklukho-Maklaya str., Moscow 117997
Russian Federation
23, Miklukho-Maklaya str., Moscow 117997
J. Kasigwa
Directorate ST&I Regulation & Biosafety Ministry of Science, Technology & Innovation The Republic of Uganda
Uganda
Plot 19, Lumumba Avenue, Rumee Building, P.O. Box 7466, Kampala Uganda
Uganda
Plot 19, Lumumba Avenue, Rumee Building, P.O. Box 7466, Kampala Uganda
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Review
For citations:
Ignatov P.A., Ivanov A.A., Abramov A.V., Kasigwa J. Fragment of a central-type large structure located in southern Uganda and its metallogenic value. Proceedings of higher educational establishments. Geology and Exploration. 2019;(6):18-25. (In Russ.) https://doi.org/10.32454/0016-7762-2019-6-18-25
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