Crustal structure beneath southern Africa and its implications for the formation and evolution of the Kaapvaal and Zimbabwe cratons

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dc.contributorVirginia Techen
dc.contributor.authorNguuri, T. K.en
dc.contributor.authorGore, J.en
dc.contributor.authorJames, D. E.en
dc.contributor.authorWebb, S. J.en
dc.contributor.authorWright, C.en
dc.contributor.authorZengeni, T. G.en
dc.contributor.authorGwavava, O.en
dc.contributor.authorSnoke, J. A.en
dc.contributor.authorKaapvaal Seismic Groupen
dc.contributor.departmentGeosciencesen
dc.date.accessed2013-11-20en
dc.date.accessioned2013-12-02T18:12:00Zen
dc.date.available2013-12-02T18:12:00Zen
dc.date.issued2001-07-01en
dc.description.abstractThe formation of Archean crust appears to involve processes unique to early earth history. Initial results from receiver function analysis of crustal structure beneath 81 broadband stations deployed across southern Africa re veal significant differences in the nature of the crust and the crust-mantle boundary between Archean and post-Archean geologic terranes. With the notable exception of the collisional Limpopo belt, where the crust is thick and the Moho complex, the crust beneath undisturbed Archean craton is typically thin (similar to 35-40 km), unlayered, and characterized by a strong velocity contrast across a relatively sharp. Moho. This crustal structure contrasts markedly with that beneath post-Archean terranes and beneath Archean regions affected by large-scale Proterozoic events (the Bushveld complex and the Okwa/Magondi belts), where the crust tends to be relatively thick (similar to 46-50 km) and the Moho is complex.en
dc.identifier.citationNguuri, T.K. et al. , 2001. Crustal structure beneath southern Africa and its implications for the formation and evolution of the Kaapvaal and Zimbabwe cratons, Geophys. Res. Lett., 28, 2501–2504, doi: 10.1029/2000gl012587en
dc.identifier.doihttps://doi.org/10.1029/2000gl012587en
dc.identifier.issn0094-8276en
dc.identifier.urihttp://hdl.handle.net/10919/24271en
dc.language.isoen_USen
dc.publisherAmerican Geophysical Unionen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectLimpopo Belten
dc.titleCrustal structure beneath southern Africa and its implications for the formation and evolution of the Kaapvaal and Zimbabwe cratonsen
dc.title.serialGeophysical Research Lettersen
dc.typeArticle - Refereeden

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