Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Roger D. Dixon"'
Autor:
Roland K. W. Merkle, Roger D. Dixon
Publikováno v:
Geological Society, London, Special Publications. 492:135-145
Autor:
Roger D. Dixon, Elizaveta Kovaleva
Publikováno v:
Minerals, Vol 10, Iss 1053, p 1053 (2020)
Minerals
Volume 10
Issue 12
Minerals
Volume 10
Issue 12
The Vredefort impact structure in South Africa is deeply eroded to its lowermost levels. However, granophyre (impact melt) dykes in such structures preserve clasts of supracrustal rocks, transported down from the uppermost levels of the initial struc
Autor:
P.W. Jaco Delport, Frank Reith, Rick Tearle, Barbara Etschmann, Stephen Pederson, Joël Brugger, Roger D. Dixon, Alastair J. Ludington, Santonu Kumar Sanyal, Jeremiah Shuster
Publikováno v:
The Science of the total environment. 727
In Earth's near-surface environments, gold biogeochemical cycling involves gold dissolution and precipitation processes, which are partly attributed to bacteria. These biogeochemical processes as well as abrasion (via physical transport) are known to
Publikováno v:
Energy & Fuels. 31:11811-11817
Initiation of self-heating is governed by a coal’s ability to oxidize at low temperatures. Aliphatics undergo low-temperature oxidation and are the main constituents of vitrinite. Conversely, the chief constituents of inertinite, aromatics, oxidize
Autor:
Roger D. Dixon, Robert Schouwstra
Publikováno v:
Episodes. 40:132-140
Publikováno v:
Ore Geology Reviews. 75:186-205
The morphology and mineral chemistry of gold and associated sulphides at Sheba, Fairview, and New Consort gold mines in the Barberton Greenstone Belt (BGB) identify two main types of mineralization. The first type occurs associated with sulphides (ma
Publikováno v:
Lithos. :105621
Impact-generated pseudotachylites (PTs) have been extensively studied in the Vredefort Impact Structure, South Africa, and have been shown to correspond chemically and isotopically to their host rocks. Such melts are frequently described as forming s
Publikováno v:
Journal of Forensic Sciences. 61:S230-S236
The identification of gold-bearing material is essential for combating the theft of gold in South Africa. Material seized in police operations is generally a mixture of gold from different mines, and as such cannot be traced back to a single location
Autor:
Laurance Donnelly, Carlos Martín Molina Gallego, Diego Villalba, Rob Fitzpatrick, Duncan Pirrie, Lorna Dawson, Olga Ushacova, Roger D. Dixon, Bill Schneck, Pier Matteo Barone, Fábio Augusto da Silva Salvador, Rosa Maria Di Maggio, Olga Gradusova, Ricardo L. Silva, Shari L. Forbes, Grant D. Wach, Ritsuko Sugita, Gullermo Sagripanti, Alastair Rufell, Khudooma Saeed Al Naimi, Ekaterina Nesterina, Marina Peleneva, Jennifer McKinley
Publikováno v:
Di Maggio, R M, Donnelly, L J, Al Naimi, K S, Barone, P M, Da Silva Salvador, F A, Dawson, L, Dixon, R, Fitzpatrick, R, Gradusova, O, Nesterina, E, Peleneva, M, Ushacova, O, Gallego, C M M, Pirrie, D, Ruffell, A, McKinley, J, Sagripanti, G, Villalba, D, Schneck, B, Sugita, R, Wach, G, Silva, R & Forbes, S 2017, ' Global developments in forensic geology ' Episodes, vol. 40, no. 2, pp. 120-131 . https://doi.org/10.18814/epiiugs/2017/v40i2/017014
Forensic geology has developed in each country dependent on the history, political and social setting, anthropological influences and geology. The aim of this section is to provide a global overview of forensic geology, including the history, develop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1de83a4c47895443d1f0c1fc8f1f0fad
https://hdl.handle.net/10453/124878
https://hdl.handle.net/10453/124878
Autor:
Gerhard Vermeulen, Egmont Richard Rohwer, Peter Gorst-Allman, Jayne De Vos, Roger D. Dixon, Jack Cochran, Jean-François Focant
Publikováno v:
Chemosphere. 82:1230-1239
The disposal and dumping of toxic waste is a matter of growing concern in developing countries, including South Africa. Frequently these countries do not possess access to gas chromatography-high resolution mass spectrometry (GC-HRMS) for the determi