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The minerals industry of Oman
251A
GENERAL
GEOLOGY
Tectonic processes and structural Ground Engineering yewbook 1994 ed C. Lomas, (Thomas Telford, London), ISBN (paperback) 0 7277 2264 6, 1994,927 pp. This annual publication is a comprehensive, worldwide guide to manufacturers and suppliers of geotechnical materials, products, plant and equipment, as well as consultants, contractors and speciahsts. Companies are listed by name, activity and region. Products and services are listed by company and subject. The four separate indexes include alphabetical lists of: company head offi and associated key personnel: subject areas covered within the book; trade names with a short description and cross-referencing to manufacturers or suppliers and advertisers. (from Publisher)
956002 Proceediqfx of tk sixth ArrIMM extractire met&wm confcence, &iabale, JrJy 1994 ANON (At&MM), (Au&ala&n Institute of Mining & Metallurgy; Publication Series No. 4/94), ISBN (hardback) 0 949106 96 8, 1994,338 pp. This book contains 54 papers presented at a four day conference. The papers cover the following range of topics; modelling and simulation of extraction processes; pyrometallurgical thermodynamics; pyrometallurgical processes; hydrometahurgical systems; extra&e metallurgy of gold; pyrometallurgical reaction kinetics; extraction equilibria; arsenic in hydrometallurglcal processing; iron and steel processing; and alumina production. (S.E.Brown)
9!%otl3 The mluerals hdwstry of Oman S. Hall, Minhg Magazine, 171(3), 1994, pp 122,124,126. Oman’s wealth of economically important minerals is predominantly found associated with ophiolites situated in a mountain range inland from the northern coastal belt. Copper, chromite, manganese, nickel, iron, gold and silver are all found here, although copper mining is the most developed activity, producing approximately 1 Mt/yr. The overall structum of the massive sulphide orebodies at three localities are described together with the extraction methods wed. Surface deposits of gold/copper are currently being exploited. Further topics covered are the cement production plants, and prospects for coal, chromite and gold mining. (M.J.Smith)
Proceedings of the PNG geoIogy, exploration and mining conference, Lae, Papua New G&mea, 1994 ed R. Rogerson, (Australasian Institute of Mining & Metallurgy; publication 2/94), ISBN (paperback) 0 949106 94 1, 1994,310 pp. This volume contains the proceedings of the PNG geology, exploration and mining conference. Pity authors contributed to 34 papers included in the proceedings. The papers are divided into 5 sections: geology; mineral exploration~mining, millina and metallurav: small scale minima: and PNG’s explo&on and minin~knvironment. (S.E.Br&n)
World map of active faults (prelimhry rear&s of shdies) V. G. Trifonov, Quatemary Intemational, 25, 1995, pp 3-12. The Project ‘World map of major active faults’ was confirmed in 1989 as a part of the International Lithosphere Program. The objectives are to compile the World map in scale 1:lO 000 OOtl,the maps of continents in scale 1:5 000 090 and the maps of some seismic regions in scale of 1:looO Ooo or 1:5000 OOtl with the Explanatory Notes and the Catalogue of major active faults of continents. The maps will show location, age, sense and rate of motion and reliability of identification of faults not older, than 100 000 years, as well as Middle Pleistocene faults, contemporary folds, flexures, volau1oe8 and epicentres of strong earthquakes di&entiated by magnitude, depth and age. The first results of the Project are discussed. (from Author)
9s6006 La&l& faults and tectonic faults, analog& The SlumgulBoa earthflow, Colorado J. Gomberg, P. Bodin, W. Savage & M. E. Jackson, Geology, 23(l), 1995, pp 41-44. Recent geophysical observations of landslide movement support the hypothesis that processes involved in landslide faulting are analogous to those that operate in crust&scale faulting. Relative to crustal faulting studies, quantitative seismic, geodetic, and creep measurements of landslide deformation may be made in a very short time with readily available instrumentation and at relatively minimal expense. The displacement of landslide material occurs along discrete faults exhibiting a combination of brittle failure, indicated by slide quakes and creep events, and as stable sliding observed as steady-state creep. (Authors)
Curved slip zones in an elastic h&phe M. Jeyakumaran & L. M. Keer, Bulletin - Sehological Society of Americu, 84(6), 1994, pp 1903-1915. Slip on a curved fault loaded by far-field compressive stress induces changes in normal stress along the fault surface. A two-dimensional crack model is developed to quantify these stresses for curved fault geometries. Under compressional tectonic loading slip is retarded on the planar slip zones of higher dips, but enhanced if the dip decreases with depth. On the other hand, under extensional tectonic loading, slip is retarded on the planar slip zones of smaller dips, but enhanced if the dip increases with depth. Curvature of a concave-downward slip zone enhances compressive normal stress at the shallow end of the slip zone under compressional tectonic loading, tending to prevent propagation of the slip zones to the free surface. On the other hand, the curvature of a concave-upward slip zone reduces the compressive normal stress at the shallow end under the uniform extensional tectonic loading, thus assisting propagation of slip zones to the free surface. By contrast, for deep slip zones, the changes in normal stress are practically not tiected by the fault curvature. The results show that the magnitude of induced normal stresses is sharply localized near the bend. (from Authors)
GENERAL
GEOLOGY
Tectonic processes and structural Ground Engineering yewbook 1994 ed C. Lomas, (Thomas Telford, London), ISBN (paperback) 0 7277 2264 6, 1994,927 pp. This annual publication is a comprehensive, worldwide guide to manufacturers and suppliers of geotechnical materials, products, plant and equipment, as well as consultants, contractors and speciahsts. Companies are listed by name, activity and region. Products and services are listed by company and subject. The four separate indexes include alphabetical lists of: company head offi and associated key personnel: subject areas covered within the book; trade names with a short description and cross-referencing to manufacturers or suppliers and advertisers. (from Publisher)
956002 Proceediqfx of tk sixth ArrIMM extractire met&wm confcence, &iabale, JrJy 1994 ANON (At&MM), (Au&ala&n Institute of Mining & Metallurgy; Publication Series No. 4/94), ISBN (hardback) 0 949106 96 8, 1994,338 pp. This book contains 54 papers presented at a four day conference. The papers cover the following range of topics; modelling and simulation of extraction processes; pyrometallurgical thermodynamics; pyrometallurgical processes; hydrometahurgical systems; extra&e metallurgy of gold; pyrometallurgical reaction kinetics; extraction equilibria; arsenic in hydrometallurglcal processing; iron and steel processing; and alumina production. (S.E.Brown)
9!%otl3 The mluerals hdwstry of Oman S. Hall, Minhg Magazine, 171(3), 1994, pp 122,124,126. Oman’s wealth of economically important minerals is predominantly found associated with ophiolites situated in a mountain range inland from the northern coastal belt. Copper, chromite, manganese, nickel, iron, gold and silver are all found here, although copper mining is the most developed activity, producing approximately 1 Mt/yr. The overall structum of the massive sulphide orebodies at three localities are described together with the extraction methods wed. Surface deposits of gold/copper are currently being exploited. Further topics covered are the cement production plants, and prospects for coal, chromite and gold mining. (M.J.Smith)
Proceedings of the PNG geoIogy, exploration and mining conference, Lae, Papua New G&mea, 1994 ed R. Rogerson, (Australasian Institute of Mining & Metallurgy; publication 2/94), ISBN (paperback) 0 949106 94 1, 1994,310 pp. This volume contains the proceedings of the PNG geology, exploration and mining conference. Pity authors contributed to 34 papers included in the proceedings. The papers are divided into 5 sections: geology; mineral exploration~mining, millina and metallurav: small scale minima: and PNG’s explo&on and minin~knvironment. (S.E.Br&n)
World map of active faults (prelimhry rear&s of shdies) V. G. Trifonov, Quatemary Intemational, 25, 1995, pp 3-12. The Project ‘World map of major active faults’ was confirmed in 1989 as a part of the International Lithosphere Program. The objectives are to compile the World map in scale 1:lO 000 OOtl,the maps of continents in scale 1:5 000 090 and the maps of some seismic regions in scale of 1:looO Ooo or 1:5000 OOtl with the Explanatory Notes and the Catalogue of major active faults of continents. The maps will show location, age, sense and rate of motion and reliability of identification of faults not older, than 100 000 years, as well as Middle Pleistocene faults, contemporary folds, flexures, volau1oe8 and epicentres of strong earthquakes di&entiated by magnitude, depth and age. The first results of the Project are discussed. (from Author)
9s6006 La&l& faults and tectonic faults, analog& The SlumgulBoa earthflow, Colorado J. Gomberg, P. Bodin, W. Savage & M. E. Jackson, Geology, 23(l), 1995, pp 41-44. Recent geophysical observations of landslide movement support the hypothesis that processes involved in landslide faulting are analogous to those that operate in crust&scale faulting. Relative to crustal faulting studies, quantitative seismic, geodetic, and creep measurements of landslide deformation may be made in a very short time with readily available instrumentation and at relatively minimal expense. The displacement of landslide material occurs along discrete faults exhibiting a combination of brittle failure, indicated by slide quakes and creep events, and as stable sliding observed as steady-state creep. (Authors)
Curved slip zones in an elastic h&phe M. Jeyakumaran & L. M. Keer, Bulletin - Sehological Society of Americu, 84(6), 1994, pp 1903-1915. Slip on a curved fault loaded by far-field compressive stress induces changes in normal stress along the fault surface. A two-dimensional crack model is developed to quantify these stresses for curved fault geometries. Under compressional tectonic loading slip is retarded on the planar slip zones of higher dips, but enhanced if the dip decreases with depth. On the other hand, under extensional tectonic loading, slip is retarded on the planar slip zones of smaller dips, but enhanced if the dip increases with depth. Curvature of a concave-downward slip zone enhances compressive normal stress at the shallow end of the slip zone under compressional tectonic loading, tending to prevent propagation of the slip zones to the free surface. On the other hand, the curvature of a concave-upward slip zone reduces the compressive normal stress at the shallow end under the uniform extensional tectonic loading, thus assisting propagation of slip zones to the free surface. By contrast, for deep slip zones, the changes in normal stress are practically not tiected by the fault curvature. The results show that the magnitude of induced normal stresses is sharply localized near the bend. (from Authors)