scholarly journals Age and origin of peridotitic diamonds from Venetia, Limpopo belt, Kaapvaal-Zimbabwe craton

2019 ◽  
Keyword(s):  
Zimbabwe Craton ◽  
Limpopo Belt

A terrane interpretation of the Archaean Limpopo Belt

1993 ◽  
Vol 130 (6) ◽  
pp. 755-765 ◽  
Author(s):  
H. R. Rollinson
Keyword(s):  
Shear Zones ◽  
Kaapvaal Craton ◽  
Late Archaean ◽  
The North ◽  
Zimbabwe Craton ◽  
Marginal Zones ◽  
Limpopo Belt

AbstractThe Limpopo Belt is a zone of thickened Archaean crust whose origin is currently explained by a late Archaean continent-continent collision between the Kaapvaal and Zimbabwe cratons. This review shows that the two cratons have fundamentally different geological histories and that the Zimbabwe Craton was unlikely to have behaved as a stable ‘cratonic’ block at the time of the Limpopo Belt collision. The geological histories of the Zimbabwe Craton, the North Marginal, Central and South Marginal zones of the Limpopo Belt and the Kaapvaal Craton are shown to be sufficiently different from one another to warrant their consideration as discrete terranes. The boundaries between the five units outlined above are all major shear zones, further supporting a terrane model for the Limpopo Belt. The five units were all intruded by late- to syn-tectonic granites c.2.6 Ga, constraining the accretion event to c. 2.6 Ga.

Geologic history of the Archean Buhwa Greenstone Belt and surrounding granite–gneiss terrane, Zimbabwe, with implications for the evolution of the Limpopo Belt

1995 ◽  
Vol 32 (11) ◽  
pp. 1977-1990 ◽  
Author(s):  
Christopher M. Fedo ◽  
Kenneth A. Eriksson ◽  
Tom G. Blenkinsop
Keyword(s):  
Greenstone Belt ◽  
Marginal Zone ◽  
Sedimentary Cover ◽  
Granite Gneiss ◽  
Shear Zones ◽  
Granulite Facies ◽  
Geologic History ◽  
Northern Margin ◽  
Zimbabwe Craton ◽  
Limpopo Belt

The Buhwa Greenstone Belt (BGB) of southern Zimbabwe is the only major greenstone belt in the Archean Zimbabwe Craton directly adjacent to the granulite-facies rocks that constitute the Northern Marginal Zone of the Limpopo Belt. The deformational history and assembly of the BGB shed light on the evolution of the Northern Marginal Zone – Zimbabwe Craton transition. Assembly of the region began with deposition of the dominantly sedimentary cover succession at ~3.0 Ga on banded gneisses of the ~3.5 Ga Tokwe segment. At ~2.9 Ga the northern margin of the greenstone belt experienced kilometres of ductile, oblique-slip, dextral shearing. This shear zone was later intruded by the granitic to tonalitic ~2.9 Ga Chipinda batholith. The remaining events recognized in the region occurred during the time span 2.9–2.5 Ga. Northwest-directed thrusting of the Northern Marginal Zone over the Zimbabwe Craton took place along a collection of discrete, typically metre-wide shear zones, which collectively form the tectonic break between the Zimbabwe Craton and the Northern Marginal Zone. In response to thrusting, the cover succession and surrounding granitoids were folded and underwent regional greenschist-facies metamorphism. Two suites of potassic granites were emplaced north and south of the greenstone belt towards the end of thrusting. Plutonism was followed by conjugate faulting and later filling of the fractures by the Great Dyke of Zimbabwe. The youngest events may have occurred between ~2.5 and ~2.0 Ga, and include sinistral shearing along the southern margin of the belt, transecting cleavage formation, and open folding as a result of northeast-directed crustal shortening.

Age and origin of peridotitic diamonds from Venetia, Limpopo Belt, Kaapvaal–Zimbabwe craton

Lithos ◽  
2009 ◽  
Vol 112 ◽  
pp. 785-792 ◽  
Author(s):  
S.H. Richardson ◽  
P.F. Pöml ◽  
S.B. Shirey ◽  
J.W. Harris
Keyword(s):  
Zimbabwe Craton ◽  
Limpopo Belt

Himalayan-Tibetan analogies for the evolution of the Zimbabwe Craton and Limpopo Belt

1992 ◽  
Vol 55 (1-4) ◽  
pp. 571-587 ◽  
Author(s):  
Peter J. Treloar ◽  
Michael P. Coward ◽  
Nigel B.W. Harris
Keyword(s):  
Zimbabwe Craton ◽  
Limpopo Belt

Metamorphic P-T profiles from the Zimbabwe Craton to the Limpopo Belt, Zimbabwe

1992 ◽  
Vol 55 (1-4) ◽  
pp. 259-277 ◽  
Author(s):  
T. Tsunogae ◽  
T. Miyano ◽  
J. Ridley
Keyword(s):  
Zimbabwe Craton ◽  
Limpopo Belt
Sign in / Sign up

Export Citation Format

Share Document