LATE-OROGENIC GOLD DEPOSITS IN EGYPT
نویسندگان
چکیده
منابع مشابه
Orogenic gold deposits: A proposed classification in the context of their crustal distribution and relationship to other gold deposit types
The so-called ‘mesothermal’ gold deposits are associated with regionally metamorphosed terranes of all ages. Ores were formed during compressional to transpressional deformation processes at convergent plate margins in accretionary and collisional orogens. In both types of orogen, hydrated marine sedimentary and volcanic rocks have been added to continental margins during tens to some 100 milli...
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The Variscan French Massif Central experienced two successive stages of extension from Middle Carboniferous to Early Permian. In the northern Massif Central, the first stage began in the late Visean, immediately after nappe stacking, and is well recorded by NamurianWestphalian synkinematic plutonism. The Middle Carboniferous leucogranites widespread in the NW Massif Central (Limousin and Sioule...
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[1] The current structure of the South Armorican Domain in the French Variscan Belt, provides an excellent record of the late orogenic evolution, as documented by the complex interactions between extensional structures and partial melting. In the Golfe du Morbihan, the South Brittany Migmatite Belt (SBMB), tectonically overlain by non‐melted metamorphic units, was studied by combined structural...
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* Department of Genetics, University of Wisconsin, Paper No. 634. 1 G. B. L. Arner, Columbia Univ. Studies in History, Economics, and Public Law, 31, No. 3, 1-99, 1908. 2 H. J. Muller, Bull. N.Y. Acad. Med., 24, 447-469, 1948. 3 H. M. Slatis, Am. J. Human Genet., 6, 412-418, 1954. 4 J. Sutter and L. Tabah, Population, 7, 249-266, 1952; 8, 511-526, 1953. 5 S. M. Bemiss, Trans. Am. Med. Assoc., 1...
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Mapping in the Homs region of Syria has revealed a hitherto unrecognized staircase of at least 12 gravel terraces of the upper Orontes River. The terrace gravels overlie Pliocene lacustrine marl and have been calcareously cemented into conglomerates, sometimes interbedded with cemented fine-grained alluvium. A tentative dating scheme, based on modelling the regional-scale surface uplift that ha...
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ژورنال
عنوان ژورنال: Mining science and technology
سال: 2018
ISSN: 2500-0632
DOI: 10.17073/2500-0632-2018-1-89-96