Urban development commonly disturbs the metastable conditions in the dolomite environment which can lead to sinkhole formation. 650 sinkholes, which manifested from 1984 to 2004 in an approximately 3,700 ha urbanized environment, loed on dolomite land south of Pretoria in South Africa, was analyzed in the absence of risk mitigation measures.
The Hoogland locality is loed~20 km west of Pretoria within the eastern part of the protected buffer zone of the "Cradle of Humankind" and is loed within the dolomitic terrain of the Malmani ...
(Engineering Geology) at the University of Pretoria in 1990. He worked for the Council for Geoscience until 2012, where he undertook dam, dolomite and township investigations, as well as led research on dolomite. He completed his MSc Eng (Wits) in 2009 on the loion and closure of .
The dolomite rocks in South Africa coincide for the most part with the socalled PretoriaWitwatersrandVereeniging complex which comprises the industrial heart of the country. Urban development will, therefore, also be concentrated in this area, with the inevitable establishment of townships on the dolomite.
dolomites, which outcrop in the northern part of the study area and as small inliers further south (Figure 2). The overlying Pretoria Group predominates in the study area and has the Rooihoogte Formation at its base, comprising a highly variable thickness (370m) of .
Figure 3—Geological section through the study area 5 0 5 10 15 Kilometres Legend REL South Deep SHAFT MAIN SOUTH DEEP SHAFTS 1000m No. 1 Sub. Vert PRETORIA GROUP TRANSVAAL SUPER GROUP VENTERSDORP SUPER GROUP CENTRAL RAND GROUP 'Dolomite.
the Dolomite and the Pretoria Series (Schvellnus et al. 196? See . Hi« b«lded ironstone is, because of the asbestos content, economically the most important rock group and forms part of the Dolomite Series in the Transvaal. In the Cape Province the Banded Ironstone .as formerly classified as part of th. Pretoria .
The Far West Rand in the Transvaal Province of South Africa is the loion of some of the world's largest gold mines. The area is underlain by dolomite which is subdivided into a series of separate groundwater compartments by dykes. The inflow of water from the overlying dolomite into these deeplevel goldmines directly influences their continued development and operation.
Geology Depaiinient. University of Prcloriu, Pretoria 0002, SoLtth . email: s22577^23 and wdniLiier SarahJane Barnes LUI QiiLbcc a Chicoulitiii, S5^ Boulevard Universite. Chicoutitiii. Quebec, G^H 2B1 email: sjlxirties,ai 20U5 Geological Society of South Africa ABSTRACT Tin.'
Environmental Geology: Environmental geology is a generic term related to two distinct subdisciplines. Firstly, 'environmental' can be seen to indie the interaction between processes and Man, and include, for instance, risk induced by subsidence, slope movements, seismic events, hydrometeorology, and so .
is a place to share and follow research. Urban development commonly disturbs the metastable conditions in the dolomite environment which can lead to sinkhole formation. 650 sinkholes, which manifested from 1984 to 2004 in an approximately 3,700 ha urbanized environment, loed on dolomite land south of Pretoria in South Africa, was analyzed in the absence of risk mitigation ...
The Geological Survey is greatly indebted to the management of Union Corporation and to their staff of the Mines Geological Department at Evander for the contribution on the Evander Gold Field which is incorporated in the explanation of the sheet. This contribution deals mainly with the geology of the
Robert Burns Young, geologist, was the son of Andrew Young and his wife Lilias Burns, and a younger brother of the geologist Andrew Young*. He obtained the degree Master of Arts (MA) at the University of Glasgow in 1897, then entered the University of Edinburgh and graduated as Bachelor of Science (BSc), with distinction in geology, in 1903.
Environmental Geology: Environmental geology is a generic term related to two distinct subdisciplines. Firstly, 'environmental' can be seen to indie the interaction between processes and Man, and include, for instance, risk induced by subsidence, slope movements, seismic events, hydrometeorology, and so .
manifests, and the inherent hazard is a reflection of the geological susceptibility of a karst area to an event (sinkhole) and is determined by the properties of the dolomite profile. The scale of the hazard is expressed as small, medium, large and very large, mediumsize sinkhole (See Table 1).
The dominant geology of the mining areas are Witwatersrand sediments in the KrugersdorpRandfontein area, and dolomite of the Malmani Group, with the southernmost mines being developed on the Pretoria Group both of the Transvaal Sequence. All of the mines extract ore from the Witwatersrand rocks.
The dolomite rocks in South Africa coincide for the most part with the socalled PretoriaWitwatersrandVereeniging complex which comprises the industrial heart of the country. Urban development will, therefore, also be concentrated in this area, with the inevitable establishment of .
06/08/2012 · Geology map with polygons. In this figure, the blue areas denoting a dolomitic lithological unit have been overlain by a traced polygon using ArcGIS and are now represented by different colours to indie different attributes the rock unit might have, such as including interbedded chert, quartzite, or shale (map published byDepartment of Mineral And Energy Affairs, Republic of South Africa 1981).
dolomites, which outcrop in the northern part of the study area and as small inliers further south (Figure 2). The overlying Pretoria Group predominates in the study area and has the Rooihoogte Formation at its base, comprising a highly variable thickness (370m) of .