TY - JOUR
T1 - Precise SHRIMP U-Pb zircon age constraints on the lower Waterberg and Southpansberg Groups, South Africa
AU - Dorland, H. C.
AU - Beukes, Nicolas J.
AU - Gutzmer, Jens
AU - Evans, D. A.D.
AU - Armstrong, Richard A.
PY - 2006/6
Y1 - 2006/6
N2 - Erosional remnants of Paleoproterozoic red bed successions such as the Olifantshoek, Soutpansberg, Waterberg and Palapye Groups cover an extensive area of the Kaapvaal Craton. Depositional ages of these successions have been ill-defined and their lateral correlation a subject of controversial debate. We report precise zircon SHRIMP U-Pb ages of 2054 ± 4 and 2051 ± 8 Ma for quartz porphyry lavas stratigraphically near the base of the Waterberg Group from the Lower Swaershoek and correlative Rust de Winter Formations. The Entabeni Granite, erosively overlain by the Soutpansberg Group, yields a precise zircon SHRIMP age of 2021 ± 5 Ma. These ages indicate that at least part of the Waterberg Group is older than the Soutpansberg Group. In addition, the lower part of the Waterberg Group was deposited immediately after intrusion of the Bushveld Complex and may be tectonically related to the complex.
AB - Erosional remnants of Paleoproterozoic red bed successions such as the Olifantshoek, Soutpansberg, Waterberg and Palapye Groups cover an extensive area of the Kaapvaal Craton. Depositional ages of these successions have been ill-defined and their lateral correlation a subject of controversial debate. We report precise zircon SHRIMP U-Pb ages of 2054 ± 4 and 2051 ± 8 Ma for quartz porphyry lavas stratigraphically near the base of the Waterberg Group from the Lower Swaershoek and correlative Rust de Winter Formations. The Entabeni Granite, erosively overlain by the Soutpansberg Group, yields a precise zircon SHRIMP age of 2021 ± 5 Ma. These ages indicate that at least part of the Waterberg Group is older than the Soutpansberg Group. In addition, the lower part of the Waterberg Group was deposited immediately after intrusion of the Bushveld Complex and may be tectonically related to the complex.
UR - http://www.scopus.com/inward/record.url?scp=33747612916&partnerID=8YFLogxK
U2 - 10.2113/gssajg.109.1-2.139
DO - 10.2113/gssajg.109.1-2.139
M3 - Article
AN - SCOPUS:33747612916
SN - 1012-0750
VL - 109
SP - 139
EP - 156
JO - South African Journal of Geology
JF - South African Journal of Geology
IS - 1-2
ER -
