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Author : Rudolf Saager,Michael Meyer
Publisher : University of the Witwatersrand, Centre for Applied Legal Studies
Page : 118 pages
File Size : 55,9 Mb
Release : 1983
Category : Nature
ISBN : PSU:000017771030
Author : Rodney Moffett
Publisher : UJ Press
Page : 334 pages
File Size : 49,8 Mb
Release : 2023-04-14
Category : Nature
ISBN : 9781776434138
This Scientific Bibliography of the “Far Northern Drakensberg” is a continuation by the Afromontane Research Unit of the University of the Free State (ARU) to document published and other similar works on the mountains of the summer rainfall area of South Africa. It follows “A Scientific Bibliography of the Drakensberg, Maloti and Adjacent Lowlands” which was published in 2020 (Moffett 2020), and which covered the area between the North-Eastern Cape and the North-Eastern Free State. The current work extends this northward by including articles and publications dating back to 1875 (E.Cohen, on the Lydenburg goldfields) reaching as far as the Wolkberg and Woodbush near Tzaneen in Limpopo Province. Figure 1 shows the boundary of the area covered, and although referred to as the Far Northern Drakensberg in this work, it is identical to that described as the LMEE, Limpopo, Mpumalanga & Eswatini Escarpment by Clarke et al (2022). Although slightly separate from the “lower” escarpment, the mountainous Barberton and adjacent Eswatini area, as well as the Leolo Mountains in eastern Sekhukhuneland are also included. Details on how the boundary in figure 1 was determined are given in Clark et al (2022). Bibliographies on two further ranges in the summer rainfall area, viz. the Magaliesberg in Gauteng province and the Soutpansberg in Limpopo province are to be the subject of future compilations.
Author : Euan G. Nisbet
Publisher : Springer Science & Business Media
Page : 412 pages
File Size : 51,9 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401164894
'What are we going to do with a parcel of old stones?' wrote the director of an African museum a century and a half ago, when one of my ancestors presented him with a splendid collection of fossils of mammal-like reptiles. Old stones, however intriguing, are difficult to interpret, dusty, and do not fit well in the neatly ordered contents of a house of learning. Archaean geology, which is the study of the Earth's history in the period from after 9 the end of planetary accretion (4.5-4.4 x 10 years ago) up to the beginning 9 of the Proterozoic (2.5 x 10 years ago) is much the same - a parcel of old stones seemingly impossible to understand. Yet these stones contain the history of our origins: they can tell us a story that is interesting not just to the geologist (for whom this book is primarily written) but instead addresses the human condition in general.
Author : R. P. Foster
Publisher : Springer Science & Business Media
Page : 447 pages
File Size : 44,6 Mb
Release : 2012-12-06
Category : Science
ISBN : 9781461304975
Within the last decade, the high and continuing demand for gold has prompted a global gold rush on a scale never before seen, not even in the heady days of Ballarat, California and the Yukon. Gold is being sought on every continent and, with very few exceptions, in every country around the world. Such interest and fierce competition has demanded considerable innovation and improvement in exploration techniques paralleled by a rapid expansion of the geological database and consequent genetic modelling for the many different types of gold deposits now recognized. This proliferation of data has swamped the literature and left explorationist and academic alike unable to sift more than a small proportion of the accumulating information. This new book represents an attempt to address this major problem by providing succinct syntheses ofall major aspects ofgold metallogeny and exploration, ranging from the chemical distribution of gold in the Earth's crust, and the hydrothermal chemistry of gold, to Archaean and Phanerozoic lode deposits, epithermal environments, chemical sediments, and placer deposits, and culminates in chapters devoted to geochemical and geophysical exploration, and the economics of gold deposits. Each chapter is written by geoscientists who are acknowledged internationally in their respective fields, thus guaranteeing a broad yet up-to-date coverage. In addition, each chapter is accompanied by reference lists which provide readers with access to the most pertinent and useful publications.
Author : R.P. Hall,D.J. Hughes
Publisher : Springer Science & Business Media
Page : 498 pages
File Size : 41,8 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789400903999
Basic magmatic rocks make up approximately three-quarters of the crust ofthe present day Earth. Because we can observe and study the volcanic products of present day tectonic regimes comprehensively, we can shed light on ancient tectono-magmatic provinces, and thereby deduce the petrogenesis and evolution of the oldest basic rocks. This is the primary objective of this book. The book was conceived in order to provide a comprehensive review of the basic rocks produced during the first half of the Precambrian, i.e. the Archaean and early Proterozoic, to about 1.8 Ga years ago. Two major questions are addressed. First, what basic magmas were generated during the early Precambrian: were these magmas globally uniform, and to what extent were prevailing tectonic controls and compo sitions analogous to those of the present day? Clearly, this can be answered only by bringing together fundamental information about all relevant basic magmatic events. Second, is there any systematic temporal variation in the nature of basic suites, and what implications might such variations have on our interpretations of early Earth history? Are there important differences between early Archaean, late Archaean, Proterozoic and modern basic magmatic suites? The book uses two approaches to address these questions. Early chapters examine the fundamental characteristics of these basic rocks, whilst later chapters assess regional distribution and development by providing an overview of each major early Precambrian craton.
Author : Geological Society of South Africa
Publisher : Unknown
Page : 618 pages
File Size : 53,8 Mb
Release : 1985
Category : Geology
ISBN : STANFORD:36105013239327
Vols. 1-6, 49-68 include its Proceedings.
Author : G. G. Stanley
Publisher : Unknown
Page : 674 pages
File Size : 45,7 Mb
Release : 1987
Category : Gold
ISBN : PSU:000015115942
Author : Anonim
Publisher : Unknown
Page : 264 pages
File Size : 47,6 Mb
Release : 1935
Category : Geology
ISBN : UOM:39015013574424
Author : Neil Phillips
Publisher : Springer Nature
Page : 294 pages
File Size : 50,7 Mb
Release : 2022-06-16
Category : Science
ISBN : 9789811630811
This book addresses the origin of gold deposits to answer questions of science and curiosity. These answers contribute in turn to the improved exploration and mining of gold. Initially there is a summary of the methods used to address the genesis of gold deposits including some of the essential science and concepts. Five basic observations follow that apply to many gold deposits and need to be considered in any genetic ideas. Magmatic processes enriching gold are discussed followed by the role of aqueous fluids during gold deposit formation at elevated temperatures and pressures. Modifying effects after deposit formation include high-grade metamorphism, retrogression, weathering, and erosion. The main types of gold deposits are then explained within the spectrum of viable genetic ideas, with informal names for these examples that include gold-only, gold-plus, Carlin, slate-belt, epithermal, porphyry, iron oxide copper gold, and Archean greenstone. Case histories are included in which the role of gold geology contributed directly to discoveries—one example is at the province-scale and another at the goldfield-scale. Unlike other books on the subject, this one addresses virtually all gold deposit types rather than focusing on one type in isolation. The primary readership includes industry geologists, senior undergraduates, postgraduates, and those with some knowledge of science and an interest in the gold industry.
Author : Anonim
Publisher : Unknown
Page : 36 pages
File Size : 53,9 Mb
Release : 1960
Category : Geology
ISBN : STANFORD:36105017484432
Author : Desmond A. Pretorius
Publisher : Unknown
Page : 212 pages
File Size : 40,7 Mb
Release : 1984
Category : Geology
ISBN : PSU:000017772891
Author : Anonim
Publisher : Unknown
Page : 346 pages
File Size : 52,6 Mb
Release : 2004
Category : Geology
ISBN : STANFORD:36105115039500
Author : Geological Survey (South Africa)
Publisher : Unknown
Page : 318 pages
File Size : 44,6 Mb
Release : 1984
Category : Geology
ISBN : STANFORD:36105017689501
Author : L. J. Robb,M. Meyer
Publisher : Unknown
Page : 146 pages
File Size : 41,8 Mb
Release : 1986
Category : Geology
ISBN : PSU:000017770965
Author : Anonim
Publisher : Unknown
Page : 848 pages
File Size : 53,8 Mb
Release : 1984
Category : Mineralogy
ISBN : STANFORD:36105007647410