Brittle tectonic and stress field evolution in the Pan-African Lufilian arc and its foreland (Katanga, DRC): from orogenic compression to extensional collapse, transpressional inversion and transition to rifting.

View/Open
Discipline
Earth and related Environmental sciences
Subject
Geodynamics and mineral resources
Audience
Scientific
Date
2013Metadata
Show full item recordDescription
Orogenic bending, extension during orogenic convergence and tectonic control of Cu-dominated mineral remobilisation are well illustrated in the Pan-African Lufilian Arc and its Kundelungu foreland (Katanga, DRC). A fault-kinematic analysis and paleostress inversion of brittle structures at 19 mine sites covering the entire area has been performed. The 63 stress tensors obtained, representing 1444 fault-slip data have been grouped into 8 stress stages spanning the brittle tectonic evolution since the Lufilian orogenic climax: Lufilian compressional climax (stage 1), orogenic bending (stage 2), strike-slip deformation (stages 3-4), late-orogenic arc-parallel extension (stage 5), post-Lufilian, early Mesozoic transpressional inversion (stage 6) and Meso-Cenozoic, rift-related extension related to the Tanganyika trend (stage 7) and to the Moero trend (stage 8). Remobilisation, generating vein-type ore deposits, only occurred during the strike-slip to extensional stress stages (2-5, 7-8), while the compressional stages (1, 6) did not caused reworking of the ore deposits.
Citation
Sebagenzi, M.N.; Cailteux, J.J.; Sintubin, M.; Kipata, M.L.; Delvaux, D. (2013). Brittle tectonic and stress field evolution in the Pan-African Lufilian arc and its foreland (Katanga, DRC): from orogenic compression to extensional collapse, transpressional inversion and transition to rifting.. , Geologica Belgica, Vol. 16/1-2, 001-017,Identifiers
Type
Article
Peer-Review
Yes
Language
eng