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GeoRef Categories
Era and Period
Epoch and Age
Book Series
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Availability
Witpoort Formation
MINERALOGICAL, GEOCHEMICAL AND STRUCTURAL CHARACTERISTICS OF QUARTZ-ARENITES OF THE WITPOORT FORMATION (CAPE SUPERGROUP) NEAR KIRKWOOD, EASTERN CAPE, SOUTH AFRICA Available to Purchase
( 1 )The uppermost 2 m (A) of the Witpoort Formation at Skitterykloof are c... Available to Purchase
The geochemical classification of quartzites of the Witpoort Formation (aft... Available to Purchase
INSIGHTS FROM A MONOSPECIFIC LINGULID BRACHIOPOD BED IN THE LATE DEVONIAN OF SOUTH AFRICA Available to Purchase
In the Hartnekskloof valley the prominent cliff is composed of Floriskraal ... Available to Purchase
Lithostratigraphy of the Kweekvlei Formation (Witteberg Group), Cape Supergroup Available to Purchase
Macrostuctures in the Grey Street exposure. (A) Gentle anticline in the G... Available to Purchase
Lithostratigraphy of the Floriskraal Formation (Witteberg Group), South Africa Available to Purchase
Selected borehole collar positions in the Bothaville area (Appendix A), inc... Available to Purchase
Report on preliminary geotechnical and tropospheric site investigation for a proposed space geodetic observatory near Matjiesfontein in the Great Karoo Available to Purchase
The occurrence of the critical zone along the exposed southeastern sector of the eastern Bushveld Complex Available to Purchase
Late Permian tectonics and associated fluid influx during the Cape Orogeny: evidence from fault-bound quartz veins in the Witteberg Group (Cape Supergroup, South Africa) Available to Purchase
Depositional setting and cyclic development of the lower part of the Witteberg Group (Mid- to Upper Devonian), Cape Supergroup, Western Cape, South Africa Available to Purchase
Thrust faults and fold vergence in the Palaeozoic middle and upper Witteberg Group, Cape Supergroup (Cape Fold Belt), Steytlerville: an interpretation of their relationship Available to Purchase
Borehole LLE1 – an intra-caldera succession of the Goedgenoeg and Makwassie Formations, Ventersdorp Supergroup Available to Purchase
Palynological calibration of Devonian events at near-polar palaeolatitudes in the Falkland Islands, South Atlantic Available to Purchase
Abstract In the Devonian, the Falkland Islands were part of the high-latitude Cape Basin. West Falkland palynological assemblages are at a low thermal maturity level but also very low in diversity and dominated by simple spores with rare chitinozoans and acritarchs. The South Harbour Member contains rare verrucate and sculptured trilete spores, and is early Lochkovian. The Fish Creek Member palynofloras are late Lochkovian. The best correlative datum is the transgressive Fox Bay Formation where the palynological assemblage includes Ramochitina magnifica and is equivalent to the Sequence B transgression in Brazil (dated as late Pragian–earliest Emsian). The early Eifelian upper Fox Bay Formation spore assemblage is comparable to the Sequence C transgression in Brazil and the ?Choteč Event. The facies and position of the base Port Philomel Formation prasinophyte-rich black shale suggests the late Eifelian transgression (Kačák Event). Above this level is the inception of Geminospora lemurata (base Givetian). The upper Port Stanley Formation contains a late (but not latest) Famennian assemblage. Comparisons with both South Africa and South America indicate a number of correlative transgressive and regressive events that match to Euramerica. These correlations are at a continental scale and confirm eustatic control of these Devonian events.