標題: Titlebook: Gold metallogeny and exploration; R. P. Foster Book 1991 Blackie and Son Ltd 1991 chemistry.database.deposits.distribution.environment.gol [打印本頁] 作者: melancholy 時間: 2025-3-21 17:41
書目名稱Gold metallogeny and exploration影響因子(影響力)
書目名稱Gold metallogeny and exploration影響因子(影響力)學科排名
書目名稱Gold metallogeny and exploration網(wǎng)絡公開度
書目名稱Gold metallogeny and exploration網(wǎng)絡公開度學科排名
書目名稱Gold metallogeny and exploration被引頻次
書目名稱Gold metallogeny and exploration被引頻次學科排名
書目名稱Gold metallogeny and exploration年度引用
書目名稱Gold metallogeny and exploration年度引用學科排名
書目名稱Gold metallogeny and exploration讀者反饋
書目名稱Gold metallogeny and exploration讀者反饋學科排名
作者: Adulterate 時間: 2025-3-21 23:00
https://doi.org/10.1007/978-3-319-04984-7e Earth’s crust. Deposition of elemental gold and gold–containing minerals occurs in response to changes in the chemical and physical environment through which the hydrothermal ore fluid is migrating. For example, a buoyantly ascending hydrothermal fluid may encounter a permeable zone which induces 作者: Directed 時間: 2025-3-22 01:27 作者: 枕墊 時間: 2025-3-22 07:21 作者: 一回合 時間: 2025-3-22 09:27
https://doi.org/10.1007/978-94-011-2860-5’s crust. The choice of such a broad definition reflects (a) the wide use of the term ‘epithermal’ in contemporary mineral exploration and (b) the recognition that active geothermal systems in volcanic terranes are the present day . of the epithermal systems responsible for ore formation in the geol作者: B-cell 時間: 2025-3-22 16:03
https://doi.org/10.1007/978-1-4684-2250-4osits (Figure 6.1). Here the spectrum is subdivided into: (a) intrusion-hosted stock-work/disseminated deposits of both porphyry and non-porphyry types, the former possessing all the essential geological attributes (especially multidirectional stock-works) of typical porphyry copper and/or molybdenu作者: B-cell 時間: 2025-3-22 17:17 作者: 疲憊的老馬 時間: 2025-3-23 00:45 作者: receptors 時間: 2025-3-23 04:59 作者: 無王時期, 時間: 2025-3-23 09:12 作者: 向下 時間: 2025-3-23 11:18
Pre-operative Measurement of X-Rays,allochthonous in relation to the bedrock they overlie. In the context of almost totally glaciated landscapes, which includes most of North America north of 40°N, Greenland and Iceland, most of Europe north of 50°N, extensive parts of Asia north of 60°N, parts of South America, and Antarctica, the se作者: 語源學 時間: 2025-3-23 17:40 作者: hazard 時間: 2025-3-23 18:13
Low Invasive Pediatric Cardiac Surgeryand, then, mining, recovering and selling gold from them. Thus, economic deposits are the focal point of the gold-supply process. The economic characteristics of gold deposits are shaped by their geological features. Gold deposits are initially unknown and, once discovered, are fixed in size and hig作者: 割公牛膨脹 時間: 2025-3-23 22:17 作者: 變異 時間: 2025-3-24 02:22 作者: Clinch 時間: 2025-3-24 10:19
Archaean lode gold deposits,situated in most major cratonic areas (e.g. Australia, Brazil, Canada, India, South Africa, Zimbabwe: Foster, 1984; Macdonald, 1986; Ho and Groves, 1987). Even relatively small cratons typically contain some Archaean gold deposits (e.g. Tanzania; van Straaten, 1984), and the Archaean belts of China 作者: 偶像 時間: 2025-3-24 14:30 作者: Project 時間: 2025-3-24 17:08 作者: 瑣事 時間: 2025-3-24 20:41
Intrusion-related gold deposits,osits (Figure 6.1). Here the spectrum is subdivided into: (a) intrusion-hosted stock-work/disseminated deposits of both porphyry and non-porphyry types, the former possessing all the essential geological attributes (especially multidirectional stock-works) of typical porphyry copper and/or molybdenu作者: 摸索 時間: 2025-3-24 23:59 作者: negotiable 時間: 2025-3-25 06:00
Auriferous hydrothermal precipitates on the modern seafloor,tions, mixed chemical and clastic sediments, tuffaceous exhalites, and disseminated or massive sulphides in both volcanic- and sediment-dominated sequences. Gold-bearing iron formations and interflow metalliferous sediments associated with seafloor hydrothermal activity also have been implicated as 作者: 有雜色 時間: 2025-3-25 10:46
Ancient placer gold deposits,, they present economically attractive exploration targets. Individual ancient placer deposits like the Steyn/Basal placer in the Welkom goldfield of South Africa have produced in excess of 4500 t (metric tons) of gold from heavy mineral concentrates distributed over a palaeosurface area of 170 km. 作者: Measured 時間: 2025-3-25 14:28
Geochemical exploration for gold in temperate, arid, semi-arid, and rain-forest terrains,atures of which must be identified in the various sampling media (rock, soil, etc.) used for exploration. The geochemical signature of gold mineralization depends upon several parameters, particularly the style of mineralization in question and the physico-chemical characteristics of the supergene e作者: 奇怪 時間: 2025-3-25 18:24 作者: 怪物 時間: 2025-3-25 23:00 作者: 免費 時間: 2025-3-26 01:26 作者: 牢騷 時間: 2025-3-26 04:53
Blackie and Son Ltd 1991作者: 創(chuàng)新 時間: 2025-3-26 10:36 作者: glowing 時間: 2025-3-26 14:18
Economics of gold deposits,and, then, mining, recovering and selling gold from them. Thus, economic deposits are the focal point of the gold-supply process. The economic characteristics of gold deposits are shaped by their geological features. Gold deposits are initially unknown and, once discovered, are fixed in size and highly variable in quality.作者: 橡子 時間: 2025-3-26 20:29 作者: Neolithic 時間: 2025-3-27 00:19 作者: 貪婪地吃 時間: 2025-3-27 04:40
J. Schrank,W. Prantl,H. P. Stüweits of the southern Pacific and western US, this percentage should increase substantially in the coming years. Consequently, the understanding of and exploration for gold deposits in Phanerozoic terranes merit a substantial effort from both the research and industrial communities.作者: 同音 時間: 2025-3-27 08:59 作者: EVICT 時間: 2025-3-27 09:45
https://doi.org/10.1007/978-1-4684-2250-4 wallrocks; (d) wallrock-hosted breccia pipes; and (e) veins in both intrusions and wallrocks. This spectrum of deposits is transitional upwards to the volcanic-hosted, epithermal gold environment, which is mentioned only briefly in this chapter but discussed at length by Henley (this volume).作者: 排出 時間: 2025-3-27 13:42 作者: 一夫一妻制 時間: 2025-3-27 20:46
Intrusion-related gold deposits, wallrocks; (d) wallrock-hosted breccia pipes; and (e) veins in both intrusions and wallrocks. This spectrum of deposits is transitional upwards to the volcanic-hosted, epithermal gold environment, which is mentioned only briefly in this chapter but discussed at length by Henley (this volume).作者: Proclaim 時間: 2025-3-28 00:12
The geology and origin of Carlin-type gold deposits, Because of the the exploration and research attention paid to the Carlin Mine in the years following its discovery, deposits with similar mineralogy, host rocks, and trace elements to Carlin have become known as ‘Carlin-type deposits’ (Figure 7.1).作者: nutrition 時間: 2025-3-28 04:36
Low Cost Manufacturing Technologiescontain major gold deposits, although they are most likely of Mesozoic, not Archaean, age (e.g. Sang and Ho, 1987). Only the major cratons of Finland and the USSR (e.g. Baltic, Ukrainian and Siberian Shields) are virtually devoid of significant Archaean gold mineralization.作者: STALE 時間: 2025-3-28 10:13
Nayoung Heo,Dudley L. Poston Jr.(Minter .., 1986). This amounts to about 26 t of gold/km.. Another important deposit, the Vaal placer, which lies in the adjacent Klerksdorp goldfield, extracts about 32 t of gold/km.. Production figures from the well-known Witwatersrand Supergroup placers illustrate their productivity relative to other types of gold deposits (Figure 9.1).作者: pellagra 時間: 2025-3-28 13:39
Archaean lode gold deposits,contain major gold deposits, although they are most likely of Mesozoic, not Archaean, age (e.g. Sang and Ho, 1987). Only the major cratons of Finland and the USSR (e.g. Baltic, Ukrainian and Siberian Shields) are virtually devoid of significant Archaean gold mineralization.作者: ANTI 時間: 2025-3-28 17:34 作者: Flounder 時間: 2025-3-28 22:49 作者: 毛細血管 時間: 2025-3-28 23:12
Pre-operative Measurement of X-Rays, within or on a glacier. Once deposited, till has distinctive provenance features: (1) it is a first-derivative sediment; (2) it is widespread; and (3) it serves as the parent material for most other glacial and non-glacial surficial sediments.作者: 溫室 時間: 2025-3-29 06:23
https://doi.org/10.1007/978-3-030-56462-9lity of finding gold. Hannington .. (this volume) estimate that about 5% of massive sulphide deposits world wide contain mineable gold, and some of the richest gold deposits have been found while exploring for base metals (e.g. Crone, 1984; Dowsett and Krause, 1984)作者: 地牢 時間: 2025-3-29 08:54
,Distribution of gold in the Earth’s crust,exceeded only rarely. A survey of more recent data presented here confirms that statement. As ore deposits may concentrate gold 10. times the rock background, gold contents of only a few tens of ppb may indicate ore-forming processes.作者: contrast-medium 時間: 2025-3-29 14:42 作者: Germinate 時間: 2025-3-29 17:26
Geophysical exploration for gold,lity of finding gold. Hannington .. (this volume) estimate that about 5% of massive sulphide deposits world wide contain mineable gold, and some of the richest gold deposits have been found while exploring for base metals (e.g. Crone, 1984; Dowsett and Krause, 1984)作者: reaching 時間: 2025-3-29 21:12
Book 1991ys 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 t作者: MENT 時間: 2025-3-30 02:21
Phanerozoic gold deposits in tectonically active continental margins,its of the southern Pacific and western US, this percentage should increase substantially in the coming years. Consequently, the understanding of and exploration for gold deposits in Phanerozoic terranes merit a substantial effort from both the research and industrial communities.
