U-Pb zircon age of the upper Palapye group (Botswana) and regional implications

Mapeo, Read Brown Mthanganyika; Ramokate, L.V.; Armstrong, Richard; Kampunzu, A.B.

doi:10.1016/j.jafrearsci.2004.08.001

Cited by 25 publications

(12 citation statements)

References 38 publications

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“…Accumulation of the Waterberg, Palapye and Soutpansberg Groups (Fig. 1) was at least partly linked to final stages of this orogenesis (e.g., Bumby et al, 2002;Hanson et al, 2004a), although geochronological evidence indicates that deposition of the upper part of the Palapye Group extended to 61.6 Ga (Mapeo et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Mesoproterozoic intraplate magmatism in the Kalahari Craton: A review

Hanson

Harmer

Blenkinsop

et al. 2006

Journal of African Earth Sciences

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107

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Section: Introductionmentioning

confidence: 99%

Mesoproterozoic intraplate magmatism in the Kalahari Craton: A review

Hanson

Harmer

Blenkinsop

et al. 2006

Journal of African Earth Sciences

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107

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“…This is also observed in once contiguous West Africa, such as the belts developed at the borders of the Congo Craton and south of the Kalahari Craton (Kaoko and Damara Belts: Tegtmeyer and Kröner, 1985;Chemale Jr. et al, 2003;Seth et al, 2005;Seth, Jung, Gruner, 2008;Kröner et al, 2004;Becker et al, 2006;Goscombe and Gray, 2007) , south of the Kalahari Craton (Hanson et al, 2004a(Hanson et al, , 2006, SE of the Congo Craton and the Central Africa-Kibaran Belts (Alonso and Theunissen, 1998;Kokonyangi et al, 2006), Kaapvaal Craton (Hanson et al, 2004b;Mapeo et al, 2004), W Anti-Atlas/Marocco (Gasquet et al, 2004), SE of the West Africa Craton (Caby, 2003) and Northern Zimbabwe Cráton (Oliver et al, 1998), Figure 1a.…”

Section: Integration and Discussionmentioning

confidence: 83%

Extensional and colisional magmatic records in the Apiaí Terrane, south-southeastern Brazil: integration of geochronological U-PB Zircon ages

Siga

Basei

Nutman

et al. 2011

Geol. USP, Sér. cient.

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“…In the study area, the Karoo series rest unconformably on a basement consisting of highgrade metamorphic and igneous Archean rocks (e.g., gneiss, granite, rhyolite, gabbro, migmatite, quartzite, and mica schist) of the Zimbabwe and Kaapvaal cratons and Limpopo Mobile Belt suites ( Fig. 1B; see Aldiss 1991 for a review) and the siliciclastic deposits of the Proterozoic Palapye Group (Mapeo et al 2004). The present research focuses on the stratigraphic succession of the Hill, comprising diamictites and breccias unconformably overlying gneissic basement rock and in turn overlain by coarse siliciclastic deposits.…”

Section: Geological Settingmentioning

confidence: 99%

The nonglacial diamictite of Toutswemogala Hill (lower Karoo Supergroup, central Botswana): Implications on the extent of the late Paleozoic ice age in the Kalahari–Karoo Basin

Dietrich

Franchi

Setlhabi

et al. 2019

Journal of Sedimentary Research

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Along the easternmost edge of the Karoo–Kalahari Basin (KKB) of Botswana, the Toutswemogala Hill succession exposes a 30–50-m-thick suite of siliciclastic deposits interpreted by some as glaciogenic in origin tied to the Permo-Carboniferous Late Paleozoic Ice Age (LPIA). Six facies associations (FA) were recognized in this succession, resting unconformably on a highly uneven Archean gneissic basement, and consisting from base to top of: 1) clast-supported breccia made up of angular cobbles and boulders ubiquitously derived from the underlying basement, 2) well-bedded siltstones sealing or locally interdigitated with the underlying breccia, and bearing abundant remnants of Glossopteris sp. leaves, 3) a chaotic to faintly laminated matrix-supported diamictite bearing angular and subrounded clasts and tree logs attributed to the genus Megaporoxylon, 4) cross-bedded conglomerate bearing well-rounded quartz and clasts, 5) planar-laminated to ripple-laminated, poorly sorted, muddy sandstones showcasing dispersed mud chips that grade upward into 6) poorly sorted, cross-bedded coarse-grained sandstones displaying convolute beds and abundant imprints of unidentifiable tree logs. No evidence of glaciogenic processes have been found in this succession, in the form of either pavement or clasts striations. The breccia and diamictite are interpreted as scree and mass-flow deposits, respectively. Along with the age of the deposits, inferred from the plant debris (upper Carboniferous to lower Permian), the stratigraphic position of this sedimentary succession resting on the Archean basement suggests that it corresponds to the Dukwi Formation, a stratigraphic equivalent of the Dwyka Group in the Main Karoo Basin. This would explain the resemblance of the facies to those recovered at the base of the central Kalahari–Karoo Basin and in the neighboring Tuli, Ellisras, and Tshipise basins. The absence of diagnostic criteria for glacial processes in the studied succession raises the question of the extent, in both time and space, of the LPIA-related ice masses over southern Africa and particularly in southeastern Botswana. It is suggested here that during this glacial epoch, spatially restricted ice masses were confined in bedrock valleys (valley glaciers) in an uplifted setting otherwise characterized by non-glaciogenic processes, further strengthening the scenario of fragmented ice masses over southern Gondwana.

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U-Pb zircon age of the upper Palapye group (Botswana) and regional implications

Cited by 25 publications

References 38 publications

Mesoproterozoic intraplate magmatism in the Kalahari Craton: A review

Mesoproterozoic intraplate magmatism in the Kalahari Craton: A review

Extensional and colisional magmatic records in the Apiaí Terrane, south-southeastern Brazil: integration of geochronological U-PB Zircon ages

The nonglacial diamictite of Toutswemogala Hill (lower Karoo Supergroup, central Botswana): Implications on the extent of the late Paleozoic ice age in the Kalahari–Karoo Basin

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