Vredefort mountain land in the Southern Transvaal and the Northern Orange free State
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Vredefort mountain land in the Southern Transvaal and the Northern Orange free State by A. L. Hall

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Published by Koninklijke Akademie van Wetenschappen in Amsterdam .
Written in English


Book details:

Edition Notes

Statementby A.L. Hall and G.A.F. Molengraaff.
SeriesShaler memorial series
ContributionsMolengraaff, G. A. F.
The Physical Object
Paginationxiv,183p.,39 plates :
Number of Pages183
ID Numbers
Open LibraryOL21620059M

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The Vredefort Mountain Land in the Southern Transvaal and the Northern Orange Free State (Shaler Memorial Series) (Verhandelingen Der Koninklijke Akademie Van Wetenschappen Te Amsterdam (Tweede Sectie) Deel XXIV, No. 3): With 39 Plates + Geological Map. A.L. Hall and G.A.F. Molengraaff. It owes its name to the peaceful conclusion of a threatened war between the Transvaal and the Orange Free State Republics. The town is located near the impact site of a giant meteorite (approximately 10 km in diameter, weighing about million tons) that hit the earth at a speed of 20 km per second, some 2 million years ago.   Extract Hall and Molengraaff have recently produced a memoir of outstanding importance dealing with the Vredefort Mountain Land on the border of the Transvaal and the Orange Free State (). Their account, which is a model of lucidity, is accompanied by a map and sections, and is copiously illustrated with photographs, mainly of rock by:   During , Dr. Molengraaf and Mr. Hall published their monograph, The Vredefort Mountain Land in the Southern Transvaal and the Northern Orange Free State. The Vredefort area apparently made huge.

  Introduction The Vredefort Structure in South Africa com- prises a central basement core of Archaean granitoids, gneisses and greenstone remnants sur- rounded by a "collar" of sedimentary-metasedi- mentary and volcanic-metavolcanic rocks belong- ing to the Dominion Group, Witwatersrand Su- pergroup, Ventersdorp Supergroup and Transvaal Sequence. Hall AJ, Molengraaff GAF () The Vredefort mountain land in the southern Transvaal and the northern Orange Free State. Verh Akad van Wet Sect 2 pp Google Scholar Hart RJ, Nicolaysen LO, Gale NH () Radioelement concentrations in the deep profile through Precambrian basement of the Vredefort structure. The Orange Free State (Dutch: Oranje Vrijstaat, Afrikaans: Oranje-Vrystaat, abbreviated as OVS) was an independent Boer sovereign republic in Southern Africa during the second half of the 19th century, which ceased to exist after it was defeated and surrendered to the British Empire at the end of the Second Boer War in It is the historical precursor to the present-day Free State province. He also visited the Vredefort Dome - the hilly region to the north-west of Vredefort and Parys where a thick ring of strata are upturned around a central core of granite. (Transvaal), "Schets van de Vol. 4(6), pp. ), he gave a preliminary account of the succession of rocks in the southern half of the territory, including a review.

He and G.A.F. Molengraaff furthermore wrote a monograph on the geological history of The Vredefort mountain land in the southern Transvaal and the northern Orange Free State (Amsterdam, , p). These publications gave him a world-wide reputation and .   Tectonophysics, () Eisevier Science Publishers B.V., Amsterdam - Printed in The Netherlands Fluid inclusions, planar elements and pseudotachylites in the basement rocks of the Vredefort structure, South Africa A. FRICKE, 0. The Vredefort mountain land in the southern Transvaal and the northern Orange Free State. The Vredefort granite dome in the northern Orange Free State and the Southern Transvaal, by A.L. HallC. The Devil's Kantoor in the great eastern escarpment of the .