Richards, Ralph John(University of Pretoria, 1987)
The stratigraphy , sedimentology and geochemistry of. the upper Transvaal
Sequence rocks in the northern portion of the Rooiberg Fragment are
The Leeuwpoort Formation of the Pretoria Group was deposited in ...
During the refining of steel by basic processes, a multitude of mineralogical
reactions take place in the refractories with which the furnace
is lined. The reactions are caused by an influx of material from
the slag and ...
Jansen van Vuuren, Melchior Changuion(University of Pretoria, 1989)
From available records and data of colliery product samples, an area
within the Witbank and Highveld coalfields was selected for this study.
The petrographic and elemental nature of the coal seams have been
derived from ...
Low-grade tin deposits occur within the apex of the Bobbejaankop
Granite intrusion at the Zaaiplaats Tin Mine. The finegrained
hood-facies of the Bobbejaankop Granite, called the
Lease Granite, seems to be intrusive ...
Strydom, Johan Hendrik(University of Pretoria, 1983)
A mineralogical and geochemical investigation of the country rock
around pipe-like ore bodies in the Lease Granite was undertaken to
obtain a better understanding of the conditions of formation of the
pipes. It was also ...
Dinsdale, John Lister(University of Pretoria, 1982)
Pocket mineralisation is the name applied to podlike
bodies of coarse-grained rock which are the result
of alteration of sediments. In some areas pockets
are cassiterite bearing, and these pockets have been mined
Wetie Ngongang, Ariane(University of Pretoria, 2017)
Mount Cameroon is considered the only active volcano along a 1600 km long chain of volcanic complexes called the Cameroon Volcanic Line (CVL). It has erupted seven times during the last 100 years, the most recent was in ...
Traditional float and sink analyses are undertaken to determine the washability of coal. Float and sink analyses are costly, require toxic heavy organic liquids and the procedure to wash and dry the float and discard ...
Lehong, Keabetswe Dimakatso(University of Pretoria, 2017)
Marion Island is a sub-Antarctic island which lies 300 km south of the South West Indian Ridge. The island is extensively affected by two periods of volcanism with the oldest erupting during the Pleistocene and the younger ...
Oyelami, C.A.; Van Rooy, J.L. (Jan Louis)(Springer, 2016-12)
Lateritic soils which have been described as highly weathered tropical or subtropical residual soils were studied with an attempt to establish its suitability or otherwise as sustainable material in building bricks and ...
Morekhure-Mphahlele, Refilwe; Focke, Walter Wilhelm; Grote, Wiebke(Acoustical Society of America, 2017-03)
Two traditional cosmetic clays bear similar names in different local South African languages: vumba
(Tshivenda) and ubumba (isiZulu). The wet clays are applied topically for cosmetic purposes by the
respective indigenous ...
Kijko, Andrzej; Smit, Ansie(Seismological Society of America, 2012-06)
The Aki (1965) maximum likelihood estimate of the Gutenberg–Richter
b-value is extended for use in the case of multiple catalogs with different levels of
completeness. The most striking feature of this newly derived ...
The impacts associated with unconventional oil and gas (UOG) extraction will be cumulative in nature
and will most likely occur on a regional scale, highlighting the importance of using strategic decision-making and
Jones, Brendon Ronald; Brouwers, Luke B.; Van Tonder, Warren D.; Dippenaar, Matthys Alois(Springer, 2017-01)
The vadose zone typically comprises soil underlain
by fractured rock. Often, surface water and groundwater parameters
are readily available, but variably saturated flow
through soil and rock are oversimplified or estimated ...
Koleini, Mehran; Van Rooy, J.L. (Jan Louis); Bumby, Adam John(Springer, 2012-09)
The Zagros Mountains Range is an important
structural unit in south western Iran and accommodates a
significant portion of the 2.5 cm/year convergence between
Arabia and Eurasia. This structural unit includes folds,
Goetz, A.E. (Annette); Hancox, P. John(Elsevier, 2014-10)
For well over a century and a half coal has played a vital role in South Africa's economy and currently bituminous
coal is the primary energy source for domestic electricity generation, as well as being the feedstock for ...
Dippenaar, Matthys Alois; Van Rooy, J.L. (Jan Louis)(Elsevier, 2016-11)
Fracture flow is fairly well documented with the widespread
application of, for instance, the cubic law and assumed smooth parallel plate model.
Geometrical intricacies such as aperture, roughness and infill do however ...
TM data and other medium spatial resolution satellite data are used in geological and lithological-mineralogical classification on regular basis, although their usefulness is limited because of relatively coarse spectral ...
Unequivocal evidence for Archean eukaryotic life has been long sought for and is a matter of lively debate. In the absence of unambiguous fossils this debate has focused on biogeochemical signatures and molecular phylogenies. ...
The volcano-sedimentary succession of the Sodium Group, in the south-western corner of the Kaapvaal
craton, rests unconformably on basement granites and is usually correlated with the middle Ventersdorp
Supergroup. This ...