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Late Proterozoic evolution of the northern part of the Hamisana zone, northeast Sudan - Constraints on Pan-African accretionary tectonicsThis paper describes deformation fabrics developed in the northern part of the Hamisana zone in northeast Sudan. New structural data are presented which establish a structural chronology that characterizes distinct events of accretion, folding, and thrust faulting and reactivation of accretion-related faults. The structural data point to an intraplate compressional origin for the Hamisana zone. A review of available isotopic age data is carried out, and it is concluded that Pan-African accretionary processes may have been analogous to Phanerozoic ophiolite and island arc accretion in the western North American Cordillera, where penetrative deformation occurred in response to periodic intraplate shortening events, rather than an ultimate collision of unrelated crustal fragments.
Document ID
19930068628
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Miller, M. M.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Dixon, T. H.
(JPL Pasadena, CA, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1992
Publication Information
Publication: Geological Society, Journal
ISSN: 0016-7649
Subject Category
Geophysics
Accession Number
93A52625
Distribution Limits
Public
Copyright
Other

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