Zobrazeno 1 - 10 of 1 207 pro vyhledávání: '"R A Chapman"'
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Akademický článek
Diverse trends in observed pan evaporation in South Africa suggest multiple interacting drivers
Autor: R. Arthur Chapman, Guy F. Midgley, Kathleen Smart
Publikováno v: South African Journal of Science, Vol 117, Iss 7/8 (2021)
Planning for future water resource management in a warming climate is confounded when an expectation of increasing evaporation from open water surfaces with global warming is contradicted by observations of secular declines of pan evaporation. Decrea
Externí odkaz: https://doaj.org/article/97e41a50d7fa472783afde2f9413cd17
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5
About this title - Recent Advances in Understanding Gold Deposits: from Orogeny to Alluvium
Autor: T. Torvela, J. S. Lambert-Smith, R. J. Chapman
Publikováno v: Geological Society, London, Special Publications. 516
Gold occurs in many settings, but the dynamic nature of Earth's crust means overlapping and overprinting deposit styles are common. Characterization of mineralization from an early stage becomes important, particularly where the mineralization is com
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::357f186d6adfebd3b82f45817b2b20b8
https://doi.org/10.1144/sp516
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6
Archaeological applications of natural gold analyses
Autor: Norman Moles, Richard Walshaw, R. J. Chapman, Christoper D. Standish, J. A. Sheridan
Publikováno v: Geological Society, London, Special Publications. 516:401-424
Compositional studies of natural gold usually have a geological focus, but are also important in archaeological provenancing. Both methodologies rely on compositional comparison of two sets of samples, one of which is geographically constrained. Here
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c8366afe8b6193f5548834bd14ec06aa
https://doi.org/10.1144/sp516-2021-59
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9
Exploration Methodology Using Morphology and Alloy Composition of Alluvial Gold: A Case Study from Quaternary Deposits of the Nowshera District, Khyber Pakhtunkhwa, Pakistan
Autor: Asghar Ali, Mohammad Tahir Shah, Liaqat Ali, Mohammad Farhan, Seema Anjum Khattak, R. J. Chapman
Publikováno v: Mining, Metallurgy & Exploration. 38:367-377
Alluvial gold is abundant in the Quaternary deposits of the Kabul and Indus rivers in District Nowshera, Khyber Pakhtunkhwa, Pakistan. Understanding the provenance of alluvial gold using morphology and elemental composition could be helpful in develo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::478f3c12135a27d2e4f30cfbdaa1486a
https://doi.org/10.1007/s42461-020-00326-2
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