 | | Journal (article/letter/editorial) | | evolution of the Mesoproterozoic Cape Meredith Complex, West Falkland ROBERT J. THOMAS*, JOACHIM JACOBSâ ...metamorphic and igneous rocks of the Cape Meredith Complex, West Falkland. The data indicate that the oldest...rocks, the ~1.1 Ga supracrustal gneisses of the Big Cape Formation, which form three petrographic and geochemical...extruded in an island-arc at around 1120 Ma. The Big Cape Formation was intruded by granitoids during and...at around 1090 Ma. The oldest, foliated, (G1) granodiorite was emplaced as thin sheets at approximately |  | Riley, T.R., Flowerdew, M.J., Pankhurst, R.J., Millar, I.L., Whitehouse, M.J. (2020) U-Pb zircon geochronology from Haag Nunataks, Coats Land and Shackleton Range (Antarctica): Constraining the extent of juvenile Late Mesoproterozoic arc terranes. Precambrian Research, 340. 105646 doi:10.1016/j.precamres.2020.105646 | Journal (article/letter/editorial) | | Cross, Madingley Road, Cambridge, CB3 0ET, UK. West Building, Madingley Rise, Madingley Road, Cambridge...Haag Nunataks gneiss complex of West Antarctica where the dominant granodiorite protolith was emplaced...potential correlation with the Haag Nunataks gneiss complex. The magmatic precursors of the Haag Nunataks orthogneisses...quartzo-feldspathic gneisses of Haag Nunataks in West Antarctica (Fig. 1a (Millar and Pankhurst, 1987;...Ellsworth-Whitmore Mountains (EWM) micro-continental block of West Antarctica, which was displaced during 4 Gondwana |  | | Journal (article/letter/editorial) | | ARCs at 2.078 Ga and by those of the Bushveld Complex and elsewhere between 2.061 and 2.054 Ga, and impacted...In contrast, the Natal Belt, including the Falkland Islands, acted from 1.25 Ga to 1.0 Ga, with TDM 2...was the intrusion of 520 Ma lamprophyre at Cape Meredith. A belt of âŒ1.1 Ga magmaticâmetamorphic rocks...the Grunehogna Province, the âŒ1.1 Ga NatalâFalkland Islands extend through the Maud Belt of DML through... by the 0.52 Ga alkaline rocks at Cape Meredith, Falkland Islands, and by the 3.0 Ga intrusions of the |  | Jacobs, J., Bauer, W., Spaeth, G., Thomas, R. J., Weber, K. (1996) Lithology and structure of the Grenville-aged (~1.1âGa) basement of Heimefrontfjella (East Antarctica) Geologische Rundschau, 85 (4) 800-821 doi:10.1007/s005310050113 | Journal (article/letter/editorial) | | were juxtaposed and pervasively deformed during a complex J. Jacobs (Y) UniversitĂ€t Bremen, FB5-Geowissenschaften...Canada through Texas into East Antarctica, the Falkland Islands and southern Africa (the NamaquaNatal belt;...nunataks, in western Dronning Maud Land, the Falkland Islands and in southern Africa. Arrows indicate main...Reconstruction of east Antarctica, southern Africa and the Falkland microplate after Martin and Hartnady (1986) and...southeast by the Grenville-aged belt exposed (from west to east) in Mannefallknausane, Heimefrontfjella |  | Jacobs, J., Bauer, W., Spaeth, G., Thomas, R. J., Weber, K. (1996) Litholog and structure of the Grenville-aged (â1.1 Ga) basement of heimefrontfjella (East Antarctica) Geologische Rundschau, 85 (4) 800-821 doi:10.1007/bf02440112 | Journal (article/letter/editorial) | | were juxtaposed and pervasively deformed during a complex Abstract J. Jacobs (Y:~) Universit~t Bremen, ...Canada through Texas into East Antarctica, the Falkland Islands and southern Africa (the NamaquaNatal belt;...southeast by the Grenville-aged belt exposed (from west to east) in Mannefallknausane, Heimefrontfjella...Haag nunataks, in western Dronning Maud Land, the Falkland the Mesoproterozoic belt and the Archaean crust...Reconstruction of east Antarctica, southern Africa and the Falkland microplate after Martin and Hartnady (1986) and |  | Mendonidis, P., Thomas, R.J., Grantham, G.H., Armstrong, R.A. (2015) Geochronology of emplacement and charnockite formation of the Margate Granite Suite, Natal Metamorphic Province, South Africa: Implications for Natal-Maud belt correlations. Precambrian Research, 265. 189-202 doi:10.1016/j.precamres.2015.02.013 | Journal (article/letter/editorial) | | 49 2 the Margate Terrane is longer and more complex than previously thought. The original granite protolith...Natal belt. In this scenario, the Cape Merdith Complex, West Falkland, which shows no zircon evidence of...(Jacobs et al, 1993; Grantham et al, 1997), via the Falkland microplate (e.g. Thomas et al., us 1997) and... 2006). Although the timing of events in this complex terrane M collage has to a large extent been...the implications for crustal evolution in this complex region and its bearing on Rodinia development. |  | | Journal (article/letter/editorial) | | of Edinburgh, Grant Institute, Kingâs Buildings, West Mains Road, Edinburgh EH9 3JW, UK d British Geological...Craton are now exposed in East- and West-Antarctica, the Falkland Islands and possibly also in South America...Gondwana in the Neoproterozoic, giving rise to a complex history of growth and accretion, rifting and dispersal...smaller fragments now near South America (Falkland Islands), different parts of Antarctica (Dronning...evolved within and along an island-arc/back-arc complex that finally collided with, and was thrust onto |  | | Journal (article/letter/editorial) | | southern Africa, the Cape Meredith Complex of West Falkland, the Haag Nunatack block of West Antarctica, the...composed of juvenile, arcrelated crust (Natal, Falkland and Haag microplates, most of Maud Province, S...Maud Land and S. Mozambique, approaching the East-West Gondwana suture. A critical area for the Pan-African...associated with the syn-tectonic intrusion of granodiorite sheets. The occurrence of Pan-African syn-tectonic |  | VORSTER, CLARISA, KRAMERS, JAN, BEUKES, NIC, VAN NIEKERK, HERMAN (2016) Detrital zircon UâPb ages of the Palaeozoic Natal Group and Msikaba Formation, Kwazulu-Natal, South Africa: provenance areas in context of Gondwana. Geological Magazine, 153 (3) 460-486 doi:10.1017/s0016756815000370 | Journal (article/letter/editorial) | | Formations (Natal Group) and the Msikaba Formation (Cape Supergroup) were obtained. A total of 882 concordant...sources of detritus. The NamaquaâNatal Metamorphic Complex is suggested as a possible source of minor late...rocks of the c. 1.1 Ga NamaquaâNatal Metamorphic Complex (NNMC) along the SE coastal margin of South Africa...KwazuluâNatal and the far NE part of the Eastern Cape Province, remain somewhat controversial with regard...stratigraphic relationship to each other and to that of the Cape Supergroup further to the south (Fig. 1). The Msikaba |  | Cuadros, Javier, Cesarano, Mara, Dubbin, William, Smith, Stuart W., Davey, Alexandra, Spiro, Baruch, Burton, Rodney G.O., Jungblut, Anne D. (2018) Slow weathering of a sandstone-derived Podzol (Falkland Islands) resulting in high content of a non-crystalline silicate. American Mineralogist, 103 (1) 109-124 doi:10.2138/am-2018-6230 | Journal (article/letter/editorial) | | weathering of a sandstone-derived Podzol (Falkland Islands) resulting in high content of a non-crystalline...Jubilee Villas, Ross Road, Stanley, FIQQ 1ZZ, Falkland Islands 4 Environmental Consultant, Cambridge, U.K...influence globally. An Umbric Podzol from the Falkland Islands was studied while investigating possible ways...Thus, our observations indicate the existence of complex, successive weathering steps not yet identified...such as the soil described here. Keywords: Falkland Islands, non-crystalline silicates, podzols, weathering |  | | Journal (volume) | | Mesoproterozoic basement exposed in the West Falkland Islands and Haag nunataks, West Antarctica. The initial ΔNd..........................................15 3.4 Falkland and Ellsworth-Haag microplates .....................................................16 3.4.1 Falkland microplate......................................g. Corner 1994). Suture zones are geologically complex and tectonically disturbed, and often provide a...of the juncture of East Antarctica, Africa, the Falkland microplate and the Ellsworth-Haag microplate (Jacobs |  | | Report (issue) | | J. J. Veevers . Southern Africa: Karoo Basin and Cape Fold Belt ...................0404. J. J. Veevers...1992), (4) Grunow et al.âs (1991) reconstruction of West Antarctica, and (5) the clearer dating of the magmatic...Thurston Island: Implications for the tectonics of West Antarctica and Weddell Sea opening: Journal of Geophysical...1990, The Paleozoic and Andean magmatic arcs of West Antarctica and southern South America: Geological...Thus, East (Australia, India and Antarctica) and West (South America and Africa) Gondwanaland can be |  | | Journal (article/letter/editorial) | | useful to recollecting dispersal of Pangea, and the complex geographical and geological picture emerging from...its break-up and dispersal after the Triassic. A complex framework of continental blocks and fragments of...Western Gondwana also reveals that it comprises a complex arrangement of a great diversity of large, intermediate...1991), suggesting that Laurentia was placed to the west of Gondwana until early Phanerozoic times (Moores...admitting that Laurentia circumscribed Gondwana to the west. On the other hand, it has to be stressed that these |  | | Book | | Mitchell -ThomĂ© GEOLOGY OF THE SOUTH ATLANTIC ISLANDS 1970 GEBRUDER BORNTRAEGER - BERLIN - STUTTGART...STUTTGART GHOPOGY SOUTH OF, PHE ATLANTIC ISLANDS by Dr. Raoul C. Mitchell -ThomĂ© Consulting Geologist-Geophysicist... Preface The volume herewith treats only of those islands lying in the South Atlantic. There is a valid argument...ago. Dotted throughout these watery wastes are islands, all character- ized, with scarce an exception...to treat in one volume the entire collection of islands of the Atlantic Ocean rather than merely those |  | | Book | | correlated them with comparable deposits in the Cape Fold Belt (Keidel 1914, 1916, 1938). Motivated by...succession on the eastern side of the Atlantic, between Cape Town and LĂŒderitz, and also possess a strike that...are intrusive, just as in the Nama beds between Cape Town and Namaqualand. These rocks were characterized...between the Sierras Australes de Buenos Aires and the Cape Fold Belt (black lines). Handwritten notes made...that, by the early Ediacaran, the Amazonian and West Africa Cratons were probably still attached to Laurentia |  | | Book | | UâPb Baddeleyite Ages of MaïŹc Dyke Swarms of the West African and Amazonian Cratons: Implication for Their...from doleritic dykes in the southern part of the West African Craton. The following swarms are distinguished:...provides the ïŹrst robust LIP bar code for the southern West African Craton, and the results are used in a new...Western Mongolian Altai, Eastern Junggar, North and West Bank of Balkhash, Western Junggar, and Chingis-Taerbahatai...Emplaced in the Upper Jurassic Qorveh Granitoid Complex (Majidaba and Kangareh), Kurdistan Province, Iranâ) |
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