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Fluid and deformation induced partial melting and melt escape in low-temperature granulite-facies metasediments, Damara Belt, Namibia.
(Stellenbosch : University of Stellenbosch, 2009-03)
Fluid-present partial melting has generally been regarded a poor candidate for effecting crustal
differentiation. In this study I report on anatectic metasediments from the Pan-African Damara
Belt in Namibia that have ...
The geology and petrology of the Marble Delta
(Stellenbosch : Stellenbosch University, 1973-02)
The Marble Delta is an area of approximately 40 sq. km in Natal (30°22' Long., 30°40' Lat.), occupied by Precambrian marble and associated granites. The deeply dissected country was geologically mapped on a scale of I : 6 ...
Distribution and characterization of marine iron-rich particles
(Stellenbosch : Stellenbosch University, 2013-12)
ENGLISH ABSTRACT: This thesis investigates questions surrounding the role that iron-rich colloids (nominally sized
between 0.02 μm and 0.2 μm) and particulates (>0.2-0.45 μm) play in the context of the greater ...
Experimental evidence for sulphide magma percolation and evolution : relevant to the chromite bearing reefs of the Bushveld Complex
(Stellenbosch : Stellenbosch University, 2012-03)
ENGLISH ABSTRACT: Pt mineralization within the Bushveld Complex is strikingly focused on the chromitite reefs, despite these horizons being associated with low volumes of base metal sulphide relative to Pt grade. Partitioning ...
Die geologie van 'n gebied in Noord-Oos Transvaal met spesiale verwysing na die verspreiding en petrografie van die rotssoorte van die Palabora-stollings-kompleks
(Stellenbosch : Stellenbosch University, 1948-12)
The geology and petrology of the Merelani tanzanite deposit, NE Tanzania
(Stellenbosch : University of Stellenbosch, 2006-12)
Tanzanite, a blue/violet gemstone variety of zoisite (Ca2Al2O.AlOH[Si2O7][SiO4]) is
only produced in NE Tanzania. The only known locality is an approximately 7km2
deposit in the Merelani area. It is one of the most sought ...
Provenance of alluvial diamonds in Southern Africa : a morphological and mineral chemistry study of diamonds and related heavy minerals from the Vaalorange system and the West Coast
(Stellenbosch : Stellenbosch University, 2012-03)
ENGLISH ABSTRACT: The discovery of lucrative diamond deposits along the west coast of Southern Africa
about 1200 kilometres from the Kimberley region during the period 1908 to 1927,
gave rise to a number of different ...
The anatectic history of Archaean metasedimentary granulites from the Ancient Gneiss Complex, Swaziland
(Stellenbosch : Stellenbosch University, 2012-03)
ENGLISH ABSTRACT: This study is an investigation of the anatectic history of high-grade paragneisses from the Ancient
Gneiss Complex (AGC) in Swaziland. The work involved an integrated field, metamorphic,
geochemical, ...
The petrogenesis of the older (> 3.0 Ga) potassic granitoids of eastern Mpumalanga (South Africa) and Swaziland : an investigation of crustal formation processes in the early Earth
(Stellenbosch : Stellenbosch University, 2012-03)
ENGLISH ABSTRACT: Earth’s oldest preserved granitoid crust dates back to the Paleoarchean and consists predominantly
of sodic tonalite-trondhjemite-granodiorite (TTG) granitoids that arose through the partial melting ...
Petrogenesis of S-type granites : the example of the Cape Granite Suite
(Stellenbosch : University of Stellenbosch, 2010-03)
ENGLISH SUMMARY: S-type granite intrusions are extremely common in the continental crust and form
from the partial melting of metasediments. Compositions of S-type granite range
from leucogranite to granodiorite and have ...