Discovery of sublacustrine hydrothermal activity and associated massive sulfides and hydrocarbons in the North Tanganyika Trough, East African Rift

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doi: 10.1130/0091-7613(1989)017<1053:DOSHAA>2.3.CO;2
Authors:Tiercelin, Jean-Jacques; Thouin, Catherine; Kalala, Tchibangu; Mondeguer, André
Author Affiliations:Primary:
Univ. Bretagne Occident., Group. Rech., Brest, France
Cent. Univ. Rég., Madagascar
Cent. Rech. Sci. Nat., Zaire
Volume Title:Geology (Boulder)
Source:Geology (Boulder), 17(11), p.1053-1056. Publisher: Geological Society of America (GSA), Boulder, CO, United States. ISSN: 0091-7613
Publication Date:1989
Note:In English. 37 refs.; illus. incl. 2 tables, sketch map
Summary:Massive sulfides and carbonate mineral deposits associated with sublacustrine thermal springs were recently discovered along the Zaire side of the north Tanganyika trough, western branch of the East African Rift. This hydrothermal activity, investigated by scuba diving at a maximum depth of 20 m, is located at the intersection of major north-south normal faults and northwest-southeast faults belonging to the Tanganyika-Rukwa-Malawi (TRM) strike-slip fault zone. The preliminary results presented here come from analyses of sulfide deposits, hydrothermal fluids, and associated hydrocarbons that result from geothermal activity in this part of the East African Rift filled by a thick pile of sediment, the north Tanganyika trough. [L.C.H.]
Subjects:Faults; Gases; Geothermal energy; Geothermal systems; Hydrocarbons; Hydrogeology; Hydrothermal alteration; Hydrothermal conditions; Massive deposits; Metal ores; Metasomatism; Mineral deposits, genesis; Normal faults; Organic compounds; Processes; Rift zones; Strike-slip faults; Structural controls; Sulfides; Thermal waters; Troughs; Africa; Central Africa; Congo Democratic Republic; East African Rift; Environment; Hydrothermal processes; North Tanganyika Trough; Organic materials; Sublacustrine environment; Tanganyika Trough; Zaire
Abstract Numbers:90M/3077
Record ID:1989074239
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute.
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