Results 251 to 260 of about 21,152 (308)
What can we learn from high background radiation area (HBRA) studies in three Asian countries: India, China and Indonesia? Radiological aspects in various HBRAs. [PDF]
J Radiat ResKranrod C, Kudo H, Tokonami S.
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Quantifying the effects of exceptional fossil preservation on the global availability of phylogenetic data in deep time. [PDF]
PLoS OneWoolley CH +3 more
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2020
Placer gold deposits are abundant in Mongolia and form through endogenic and exogenic processes. Deposits are classified into four major genetic types: (1) eluvial-weathering zone, (2) deluvial, (3) proluvial, and (4) alluvial. The most economic deposits are often sourced from upper Cretaceous rocks and formed in late Cenozoic alluvial fans (Liskun and
Tankhain Semeihan, Uyanga Bold
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Placer gold deposits are abundant in Mongolia and form through endogenic and exogenic processes. Deposits are classified into four major genetic types: (1) eluvial-weathering zone, (2) deluvial, (3) proluvial, and (4) alluvial. The most economic deposits are often sourced from upper Cretaceous rocks and formed in late Cenozoic alluvial fans (Liskun and
Tankhain Semeihan, Uyanga Bold
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SEG Discovery, 1996
Editor’s note: Smimov uses the weathering definition of eluvial, meaning “an accumulation of rock debris produced*in-place by decomposition or disintegration of rock; a residue.” Two other terms in Smimov’s classification are not in common usage in North America nor in North American placer classification schemes By Russian definition, diluvium is an ...
G. JAMSRANDORJ, SERGUEI A. DIATCHKOV
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Editor’s note: Smimov uses the weathering definition of eluvial, meaning “an accumulation of rock debris produced*in-place by decomposition or disintegration of rock; a residue.” Two other terms in Smimov’s classification are not in common usage in North America nor in North American placer classification schemes By Russian definition, diluvium is an ...
G. JAMSRANDORJ, SERGUEI A. DIATCHKOV
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1987
Placer deposits provided early man with the first samples of gold and thereafter have accounted for a large production of the metal. If we include the Witwatersrand and other quartz-pebble conglomerates as fossil placers or modified placers, the placer type of auriferous deposit has provided more than two thirds of the world’s store of gold, about 80 ×
J. B. Tyrrell +12 more
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Placer deposits provided early man with the first samples of gold and thereafter have accounted for a large production of the metal. If we include the Witwatersrand and other quartz-pebble conglomerates as fossil placers or modified placers, the placer type of auriferous deposit has provided more than two thirds of the world’s store of gold, about 80 ×
J. B. Tyrrell +12 more
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Journal of the Geological Society, 1985
Editorial note: A meeting on ‘Placer deposits’, convened by Dr D. G. Sutherland (Placer Analysis Ltd, Edinburgh) and Dr I. Reid (Birkbeck College, London) on behalf of the British Geomorphological Research Group and the Institution of Mining and Metallurgy was held at the Geological Society. Burlington House on 15 November 1984.
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Editorial note: A meeting on ‘Placer deposits’, convened by Dr D. G. Sutherland (Placer Analysis Ltd, Edinburgh) and Dr I. Reid (Birkbeck College, London) on behalf of the British Geomorphological Research Group and the Institution of Mining and Metallurgy was held at the Geological Society. Burlington House on 15 November 1984.
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Journal of the Geological Society, 1985
Report of a whole-day joint meeting of the Institution of Mining and Metallurgy and the British Geomorphological Research Group held at Burlington House, 15 November 1984. The meeting was organized by Professor F. K. G. Hosking, Dr Ian Reid, Dr D. G. Sutherland and Professor M. F. Thomas, and convened by Drs Reid and Sutherland.
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Report of a whole-day joint meeting of the Institution of Mining and Metallurgy and the British Geomorphological Research Group held at Burlington House, 15 November 1984. The meeting was organized by Professor F. K. G. Hosking, Dr Ian Reid, Dr D. G. Sutherland and Professor M. F. Thomas, and convened by Drs Reid and Sutherland.
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Computer modeling placer titanium ores deposit
Proceedings, 2010The target of the publication is the presentation of a digital structural-lythological model of titanium ores deposit being of commercial significance for demonstration of possibilities and prospects of this methodology aimed at informatic-analytical provision for search, exploration and exploitation works.
E. P. Khrushchov +4 more
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1991
Alluvial, or placer, gold has been washed away by flowing water or carried by blowing wind. It has then been deposited along with earth, sand, gravel, and other transported matter, especially on river beds. Although there is no way of knowing exactly how long ago humans felt enamored of the shiny yellow metal, there is reason to presume that gold ...
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Alluvial, or placer, gold has been washed away by flowing water or carried by blowing wind. It has then been deposited along with earth, sand, gravel, and other transported matter, especially on river beds. Although there is no way of knowing exactly how long ago humans felt enamored of the shiny yellow metal, there is reason to presume that gold ...
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Proceedings, 2018
Summary Indonesia is a country of Island arcs setting, tectonically. This setting has induced many of volcanoes Indonesia followed by the presence of mineral deposits. As the consequences of never-ending demand for ore minerals, exploration of mineral deposits are always needed. The study area is located in Kulonprogo, Yogyakarta.
I.D. Putra +3 more
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Summary Indonesia is a country of Island arcs setting, tectonically. This setting has induced many of volcanoes Indonesia followed by the presence of mineral deposits. As the consequences of never-ending demand for ore minerals, exploration of mineral deposits are always needed. The study area is located in Kulonprogo, Yogyakarta.
I.D. Putra +3 more
openaire +1 more source