Výsledky vyhledávání - "Coenraad de Beer"

Oxygen Isotope Diversity in the Anorogenic Koegel Fontein Complex of South Africa: a Case for Basement Control and Selective Melting for the Production of Low- 18O Magmas

Autor: Robert B. Trumbull, Catherine G. Curtis, Coenraad de Beer, Chris Harris, Lusani Mudzanani

Publikováno v: Journal of Petrology

Koegel Fontein, about 350 km north of Cape Town, is the only known early Cretaceous anorogenic igneous complex along the volcanic rifted margin of South Africa. The oldest rocks of the complex are minor granite and syenite intrusions at 144 Ma, which

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0cf348e0433338e890e6f2de7e28c707
https://doi.org/10.1093/petrology/egt011

Zobrazit plný text záznamu

Book reviews

Autor: Claudia Mutschler, Naudé Malan, John M Mafunisa, Nthabiseng Nkosi, Heather Thuynsma, Elizabeth Sidiropoulos, André Snyders, Monika Glinzler, Beverly L Peters, Ian Taylor, Gareth Elliot, Coenraad de Beer, Beth Goldblatt, Jabavu Nkomo, Doug Brooks, Elna Schoeman, Gina Buijs, Annelizéé van Wyk

Publikováno v: South African Journal of International Affairs. 7:225-263

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::aeecc2ca44661ac8878da121987feaa7
https://doi.org/10.1080/10220460009545330

Zobrazit plný text záznamu

O- and H-isotope study of the Cretaceous Koegel Fontein complex

Autor: D. L. Reid, Chris Harris, Robert B. Trumbull, Catherine G. Curtis, Coenraad de Beer, Rolf L. Romer

Publikováno v: 11th SAGA Biennial Technical Meeting & Exhibition 'Ancient Rocks to Modern Techniques' (Swaziland, South Africa 2009)

Koegel Fontein is a 30 km diameter anorogenic igneous complex that intruded Namaqualand gneisses during the initial phase of break-up of Africa and South America. It is notable for the presence of quartz porphyry dykes that formed from low-δ 18 O ma

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ba0f3c4f706320b286bd371668347f6
https://gfzpublic.gfz-potsdam.de/pubman/item/item_239632

Zobrazit plný text záznamu

Active vs. Passive Rifting in the South Atlantic from a Petrologic Perspective: an Upwelling Controversy

Autor: Robert B. Trumbull, Rolf L. Romer, Coenraad de Beer, D. L. Reid

Publikováno v: 11th SAGA Biennial Technical Meeting & Exhibition 'Ancient Rocks to Modern Techniques' (Swaziland, South Africa 2009)

The Atlantic margin of southern Africa is a classic example of a volcanic rifted margin, but the strong gradient in the intensity of magmatism from north to south challenges a conventional plume model. A petrologic study of breakup-related mafic dike

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a5351bebe2dc1fb21b46983671e2cd3
https://doi.org/10.3997/2214-4609-pdb.241.trumbull_paper

Zobrazit plný text záznamu

Magmatism and continental breakup at the west margin of southern Africa: A geochemical comparison of dolerite dikes from NW Namibia and the Western Cape

Autor: D. L. Reid, Robert B. Trumbull, Coenraad de Beer, David van Acken, Rolf L. Romer

Publikováno v: South African Journal of Geology

This paper presents a comparative geochemical study of Early Cretaceous mafic dike swarms along the rifted volcanic margin of southern Africa from northwestern Namibia to the Cape Peninsula. These dikes are under study to provide a record of magma co

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::713ce1b9f425be181ac785aa1a8fd356
https://gfzpublic.gfz-potsdam.de/pubman/item/item_236023

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání