Zobrazeno 1 - 10
of 144
pro vyhledávání: '"R.J. Sweeney"'
Autor:
R.J. Sweeney
Publikováno v:
Koedoe: African Protected Area Conservation and Science, Vol 29, Iss 1, Pp 105-116 (1986)
The Sabie River Basalt Formation (SRBF) in the central Lebombo is a virtually continuous sequence of basaltic lavas some 2 500 m thick that was erupted 200 - 179 Ma ago. Flows are dominantly pahoehoe in character and vary from 2 m to 20 m in thicknes
Externí odkaz:
https://doaj.org/article/8006a0c064fe4f94a7f27d9b19002fca
Publikováno v:
Mineralogy and Petrology. 112:697-706
Diamond exploration focuses on geochemical analysis of indicator minerals that are more abundant than diamond itself. Among such indicators, low-Cr (Cr2O3
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99f5918d9777015fb1b6b0f2b2e4fbd4
https://doi.org/10.1007/s00710-018-0622-7
https://doi.org/10.1007/s00710-018-0622-7
Publikováno v:
Journal of Geochemical Exploration. 186:24-35
In diamond exploration, the accurate distinction between garnets from the crust or mantle, or from those having a cognate origin with kimberlite (low-Cr megacrysts), is important for the assessment of indicator mineral samples; misclassifications pot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cac0123ab5a3affbe9b4f8af44a97876
https://doi.org/10.1016/j.gexplo.2017.11.012
https://doi.org/10.1016/j.gexplo.2017.11.012
Autor:
F. Winter, R.J. Sweeney
Publikováno v:
International Kimberlite Conference Extended Abstracts: 1998.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63fbf8a8d91720a3e3fea00e895a1488
https://doi.org/10.29173/ikc2915
https://doi.org/10.29173/ikc2915
Publikováno v:
International Kimberlite Conference Extended Abstracts: 1998.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc626efe3af6e9b84e9bd0226dfce4bd
https://doi.org/10.29173/ikc2914
https://doi.org/10.29173/ikc2914
Publikováno v:
Journal of Petrology, 38 (5)
Journal of Petrology, 38 (5)
ISSN:0022-3530
ISSN:1460-2415
ISSN:0022-3530
ISSN:1460-2415
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ebd402c17eb50cf880b1cf1b04f92a6
http://doc.rero.ch/record/295515/files/petrology-38-537.pdf
http://doc.rero.ch/record/295515/files/petrology-38-537.pdf
Akademický článek
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Autor:
Peter Ulmer, R.J. Sweeney
Publikováno v:
Geochimica et Cosmochimica Acta. 66:2139-2153
Experiments have been performed in the multicomponent (natural) bulk system to constrain the conditions of generation and differentiation of a K-rich group II kimberlite (now also referred to as orangeite). The group II composition examined was satur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::83a85f9b29d5279acb46bb916168000c
https://doi.org/10.1016/s0016-7037(02)00898-0
https://doi.org/10.1016/s0016-7037(02)00898-0
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 158:582-587
A ΔE–E telescope was used in coincidence to analyse diamond samples by recoil of hydrogen (ERDA) using 4.1 MeV He + . Comparison of the results from silicates with known H-abundances suggested sensitivities of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::19a0a75f29645fa62368a1f95f695776
https://doi.org/10.1016/s0168-583x(99)00367-5
https://doi.org/10.1016/s0168-583x(99)00367-5
Publikováno v:
Earth and Planetary Science Letters. 160:133-145
The precise timing of metasomatic events in the Kaapvaal craton lithospheric mantle is poorly constrained and therefore it has proven difficult to relate mantle metasomatism in the source to igneous activity at the surface. A suite of mica–amphibol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7ebc5289c36c5548339d31a0055b404
https://doi.org/10.1016/s0012-821x(98)00073-9
https://doi.org/10.1016/s0012-821x(98)00073-9