Quick
Search: 
 
advanced search
 GSW Home    GeoRef Home    My GSW Alerts    Contact GSW    About GSW    Journals List    Help 
South African Journal of Geology Don't get GSW? Talk to your librarian.
JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS

South African Journal of Geology; June 2004; v. 107; no. 1-2; p. 33-44; DOI: 10.2113/107.1-2.33
© 2004 Geological Society of South Africa
This Article
Right arrow Figures Only
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in ISI Web of Science
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via ISI Web of Science (16)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Fouch, M. J.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation

Article

Mantle seismic structure beneath the Kaapvaal and Zimbabwe Cratons

Matthew J. Fouch

Department of Geological Sciences, Arizona State University, Tempe, AZ 85287, USA, e-mail: fouch{at}asu.edu

David E. James and John C. VanDecar

Department of Terrestrial Magnetism, Carnegie Institution of Washington, Washington, DC 20015, USA, e-mail: james{at}dtm.ciw.edu;vandecar{at}dtm.ciw.edu

Suzan van der Lee

Department of Geological Sciences, Northwestern University, Evanston, IL 60208, USA, e-mail: susan{at}earth.northwestern.edu

Kaapvaal Seismic Group

URL: http://www.ciw.edu/kaapvaal

We present results of seismic tomography for a broad region of southern Africa using data from the seismic component of the Kaapvaal Project, a multinational, multidisciplinary experiment conducted in the late 1990s. Seismic images provide clear evidence of mantle structures that mimic the surface geology across the region and provide important constraints on subcrustal structure associated with Archean cratons. Specifically, a thick (~250 to 300km) mantle keel exists beneath the Kaapvaal craton; a slightly thinner (~225 to 250km) keel exists beneath the Zimbabwe craton and parts of the Archean Limpopo mobile belt. Mantle velocities lower than surrounding regions are evident across a broad swath beneath the surface expression of the Bushveld Complex, a ~2.05 Ga layered mafic intrusion. These reduced velocities may be due to mantle refertilization during intrusion of Bushveld magmas, or they may be caused by a thermal perturbation of more recent origin, perhaps related to the ~183 Ma Karoo magmatic event.




This article has been cited by other articles:


Home page
J PetrologyHome page
W. L. Griffin, S. Y. O'Reilly, J. C. Afonso, and G. C. Begg
The Composition and Evolution of Lithospheric Mantle: a Re-evaluation and its Tectonic Implications
J. Petrology, July 4, 2008; (2008) egn033v1.
[Abstract] [Full Text] [PDF]


Home page
GeologyHome page
A. F. Kobussen, W. L. Griffin, S. Y. O'Reilly, and S. R. Shee
Ghosts of lithospheres past: Imaging an evolving lithospheric mantle in southern Africa
Geology, July 1, 2008; 36(7): 515 - 518.
[Abstract] [Full Text] [PDF]


Home page
Geological Society, London, Special PublicationsHome page
M. J. de Wit, B. B. de Brito Neves, R. A. J. Trouw, and R. J. Pankhurst
Pre-Cenozoic correlations across the South Atlantic region: (the ties that bind)
Geological Society, London, Special Publications, January 1, 2008; 294(1): 1 - 8.
[Full Text] [PDF]


Home page
Geological Society, London, Special PublicationsHome page
E. J. Milani and M. J. De Wit
Correlations between the classic Parana and Cape-Karoo sequences of South America and southern Africa and their basin infills flanking the Gondwanides: du Toit revisited
Geological Society, London, Special Publications, January 1, 2008; 294(1): 319 - 342.
[Abstract] [Full Text] [PDF]


Home page
South African Journal of GeologyHome page
M. de Wit
The Kalahari Epeirogeny and climate change: differentiating cause and effect from core to space
South African Journal of Geology, September 1, 2007; 110(2-3): 367 - 392.
[Abstract] [Full Text] [PDF]


Home page
South African Journal of GeologyHome page
J. Stankiewicz, T. Ryberg, A. Schulze, A. Lindeque, M.H. Weber, and M.J. de Wit
Initial results from wide-angle seismic refraction lines in the southern Cape
South African Journal of Geology, September 1, 2007; 110(2-3): 407 - 418.
[Abstract] [Full Text] [PDF]


Home page
GeologyHome page
C. Class and A. P. le Roex
Continental material in the shallow oceanic mantle--How does it get there?
Geology, March 1, 2006; 34(3): 129 - 132.
[Abstract] [Full Text] [PDF]


Home page
Geological Society, London, Special PublicationsHome page
M. de Wit and C. Thiart
Metallogenic fingerprints of Archaean cratons
Geological Society, London, Special Publications, January 1, 2005; 248(1): 59 - 70.
[Abstract] [PDF]


Home page
South African Journal of GeologyHome page
P. G. Silver, M. J. Fouch, S. S. Gao, M. Schmitz, and Kaapvaal Seismic Group
Seismic anisotropy, mantle fabric, and the magmatic evolution of Precambrian southern Africa
South African Journal of Geology, June 1, 2004; 107(1-2): 45 - 58.
[Abstract] [Full Text] [PDF]


Home page
South African Journal of GeologyHome page
M. de Wit and J. Tinker
Crustal structures across the central Kaapvaal craton from deep-seismic reflection data
South African Journal of Geology, June 1, 2004; 107(1-2): 185 - 206.
[Abstract] [Full Text] [PDF]


Home page
South African Journal of GeologyHome page
H. A. Jelsma, M. J. de Wit, C. Thiart, P. H.G.M. Dirks, G. Viola, I. J. Basson, and E. Anckar
Preferential distribution along transcontinental corridors of kimberlites and related rocks of Southern Africa
South African Journal of Geology, June 1, 2004; 107(1-2): 301 - 324.
[Abstract] [Full Text] [PDF]




JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2008 by Geological Society of South Africa