| | 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...characteristics and geological evolution of the Cape Meredith Complex is comparable with that of the adjacent | | THISTLEWOOD, L., LEAT, P. T., MILLAR, I. L., STOREY, B. C., VAUGHAN, A. P. M. (1997) Basement geology and PalaeozoicâMesozoic mafic dykes from the
Cape Meredith Complex, Falkland Islands: a record of repeated
intracontinental extension. Geological Magazine, 134 (3) 355-367 doi:10.1017/s0016756897007085 | Journal (article/letter/editorial) | PalaeozoicâMesozoic mafic dykes from the Cape Meredith Complex, Falkland Islands: a record of repeated intracontinental...and granitoids of the Cape Meredith Complex on the southern tip of West Falkland, provide an important...lamprophyres and Jurassic Ferrartype magmas in the Cape Meredith Complex demonstrate for the first time that the...Introduction The Cape Meredith Complex on the southern tip of West Falkland, Falkland Islands, is important...1; Beckinsale et al. 1976; Tarney, 1976), the complex is the only observed continental crystalline basement | | | Journal (article/letter/editorial) | lithologies of the NamaquaâNatal Belt are exposed in the west and east of South Africa but the central section...Kaapvaal Craton. The Belt can also be followed north-west to the Awasib Mountain Terrane of southern Namibia...whilst continental reconstructions place the Falkland Islands, Agulhas Plateau and the Maudheim Province...have been obtained from basement exposures in the west (Namaqua sector: Kheis, Gordonia and Bushmanland...the Archaean Kaapvaal Craton and the Phanerozoic Cape Fold Belt. Sub-provinces within the Namaqua sector | | 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) | Journal Pre-proofs U-Pb zircon geochronology from Haag Nunataks, Coats Land and Shackleton Range (Antarctica):... Pankhurst, I.L. Millar, M.J. Whitehouse, U-Pb zircon geochronology from Haag Nunataks, Coats Land and...pertain. © 2020 Published by Elsevier B.V. U-Pb zircon geochronology from Haag Nunataks, Coats Land and...Cross, Madingley Road, Cambridge, CB3 0ET, UK. West Building, Madingley Rise, Madingley Road, Cambridge...U-Pb zircon dating is presented here from the Mesoproterozoic Haag Nunataks gneiss complex of West Antarctica | | | 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 | | | Journal (article/letter/editorial) | Paleogeography of Late Paleozoic Diamictite, Falkland Islands pebbly mudstone, graded graywacke, and shale...sandstone of the western facies. Transport from west to east is indicated by small-scale sedimentary...during Late Paleozoic time. Abstract: In the Falkland Islands, diamictite of Carboniferous to Early Permian...those derived locally from both the Cape Meredith basement complex and the Devonian sequence as well as...well-sorted sandstone and minor conglomerate in the west to extensive, bedded intercalations of CONTENTS | | 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) | gneiss. In this study we present new U-Pb (SHRIMP) zircon geochronological data on each of the four lithotypes...granite phases and of charnockite formation. Magmatic zircon ages span a period of about 125 Ma, indicating...49 2 the Margate Terrane is longer and more complex than previously thought. The original granite protolith...gneissic Mzimilo Granite in the Mzumbe Terrane. Zircon ip t overgrowths in this sample, dated at 1037...leucogranite of the ed Portobello granite, and zircon metamorphic dates of the secondary charnockitisation | | | 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... Syntectonic granitoids of this belt gave UâPb zircon crystallisation ages of ca. 1950 Ma (Munyanyiwa | | | Report (chapter) | have been collated from Antarctica and the Falkland Islands (adjacent in Gondwana) in order to identify...Early Palaeozoic areas of West Antarctica, Victoria Land and the Falkland Islands that formed the Gondwana...basalts that occur characteristically on ocean islands (ocean island basalt - OIB) have less d e p l e...more stable East Antarctica and the more mobile West Antarctica. This division is based mainly on the...single continental fragment at this time, while West Antarctica behaved as several small crustal blocks | | | Journal (article/letter/editorial) | Society of South Africa ABSTRACT A new U-Pb SHRIMP zircon date of 1181 ± 15 Ma has been obtained from a sample...Sikombe Granite from northeastern Transkei (Eastern Cape Province). The outcrops form the most southerly...coastal outcrop in the former Transkei (now Eastern Cape Province), some 15km south of the Mtamvuna River...similarities with the âG2â augen gneisses of the Cape Meredith Complex, which may have lain close to southern KwaZulu-Natal...Suite Granites have not yet been dated by the U-Pb zircon method, though Rb-Sr data suggests an age in excess | | 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 | | | Journal (article/letter/editorial) | R.J. THOMAS 325 Metamorphic history and U-Pb Zircon (SHRIMP) geochronology of the Glenmore Granite:...e-mail: bthomas@bgs.ac.uk ABSTRACT A new SHRIMP U-Pb zircon age of 1091 ± 9 Ma has been acquired for the gneissic...Dronning Maud Land (east Antarctica), and the Cape Meredith Complex in the Falklands, which on reconstruction...metamorphic cooling age (Thomas et al., 1993a). The U-Pb zircon SHRIMP data presented in this study aims to precisely...as the Beattie Magnetic Anomaly and the Southern Cape Conductive Belt (De Beer and Meyer, 1984) (Figure | | 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 | | | Report (chapter) | deglaciation in southern Gondwana from the Falkland Islands KATE HORAN1,2*, PHILIP STONE3 & SIMON J. CROWHURST2...for the progression of deglaciation from the Falkland Islands microplate using a series of borehole core...meltwater pulses and turbidity currents. The Falkland Islands core data lend insight into the evolving Early...Australia) and the associated microplates. The Falkland Islands archipelago (alternatively known as Las Islas...sedimentary succession was deposited in the Falkland Islands that documented an almost complete account | | | Journal (article/letter/editorial) | October 4, 2000) Abstract Nd isotopic data and U/Pb zircon ages suggest that only 7-13% of continental crust...time. Volumes are estimated from published U/Pb zircon ages together with Nd isotopic data and inferred...age (McLelland et al., 1996). Coupled with U/Pb zircon ages (Corfu and Easton, 1997), Nd isotopic data...between 1.1and 0.9 Ga, combined Nd isotopic and U/Pb zircon data indicate that most of it is remelted older...Maud Land) +8to+9 (Horlick Mts) +Ito+4 (Vijayan Complex) 1.75 3.5 East Africa 1.3-0.9 0.5 1.0 Australia | | Schilling, Manuel Enrique, Carlson, Richard Walter, Tassara, AndrĂ©s, Conceição, Rommulo Vieira, Bertotto, Gustavo Walter, VĂĄsquez, Manuel, Muñoz, Daniel, Jalowitzki, Tiago, Gervasoni, Fernanda, Morata, Diego (2017) The origin of Patagonia revealed by Re-Os systematics of mantle xenoliths. Precambrian Research, 294. 15-32 doi:10.1016/j.precamres.2017.03.008 | Journal (article/letter/editorial) | located between the DM and the Malvinas/Falkland Islands, where Grenville-age metamorphic rocks are...that southern Patagonia and the Malvinas/Falkland Islands and plateau constitute an integrated and relatively...metasedimentary rocks. Populations of detrital zircon grains have typically Gondwana-age components ranging...12, Cerro del Fraile; 13, Pali Aike, and 14, Cape Meredith (Cabo Belgrano). In contrast, to the north...rocks are found at Cape Meredith (or Cabo Belgrano) in the Malvinas/Falkland Islands (Cingolani and Varela | | | Journal (article/letter/editorial) | Upper Carboniferous Fitzroy Tillite Formation, Falkland Islands P. Stone, M. R. A. Thomson and A. W. A. Rushton...Upper Carboniferous Fitzroy Tillite Formation, Falkland Islands. Earth and Environmental Science Transactions...Upper Carboniferous Fitzroy Tillite Formation, Falkland Islands P. Stone1, M. R. A. Thomson2 and A. W. A....Rushton3 1 British Geological Survey, Murchison House, West Mains Road, Edinburgh EH9 3LA, UK E-mail: psto@bgs...Carboniferous Fitzroy Tillite Formation of the Falkland Islands contain a rich Cambrian fauna of archaeocyaths | | LINDEQUE, A., DE WIT, M. J., RYBERG, T., WEBER, M., CHEVALLIER, L. (2011) DEEP CRUSTAL PROFILE ACROSS THE SOUTHERN KAROO BASIN AND BEATTIE MAGNETIC ANOMALY, SOUTH AFRICA: AN INTEGRATED INTERPRETATION WITH TECTONIC IMPLICATIONS. South African Journal of Geology, 114 (3) 265-292 doi:10.2113/gssajg.114.3-4.265 | Journal (article/letter/editorial) | Council for Geoscience, Western Cape, P.O. Box 572, 7535 Bellville, Cape Town, South Africa e-mail: ansalique@gmail...Council for Geoscience, Western Cape, P.O. Box 572, 7535 Bellville, Cape Town, South Africa e-mail: lc...prominent geological features such as the Karoo Basin, Cape Fold Belt (CFB) and the Beattie Magnetic Anomaly...sub-horizontal ~1.5 to 10 km thick wedge of the Cape Supergroup (CSG). This CSG wedge stretches from...Southernmost Africa is dominated by the PalaeozoicMesozoic Cape Fold Belt (CFB) and its flanking CapeKaroo Basin | | | Report (chapter) | stratigraphic history relative to its neighbouring West Antarctic crustal blocks, and the Transantarctic...Positions vary from along the East Antarctic margin, west of the Pensacola Mountains, to within the Natal...Mountains (EWM), one of five main crustal blocks forming West Antarctica (Dalziel & Elliot 1982; Storey et al...into consideration in any reconstruction of the West Antarctic microplates within Gondwana. Several positions...(1969) aligned the Ellsworth Mountains with the Cape Fold Belt, adjacent to the Coats Land coast of East | | | Book | Springer Earth System Sciences Kate Horan Falkland Islands (Islas Malvinas) in the PermoCarboniferous...http://www.springer.com/series/10178 Kate Horan Falkland Islands (Islas Malvinas) in the Permo-Carboniferous...Resources, Falkland Islands Government, and was responsible for recovering from the Falkland Islands the borehole...Stone, British Geological Survey, Murchison House, West Mains Road, Edinburgh, EH9 3LA. Email: psto@bgs...evidence from a Gondwana fragment that became the Falkland Islands (Islas Malvinas) microplate following the | | | Journal (article/letter/editorial) | Gondwana Plate margin in the Weddell Sea sector: Zircon geochronology of Upper Paleozoic (mainly Permian)...Keywords: Gondwana Zircon Antarctica Ellsworth Mountains Permian a b s t r a c t Zircon geochronology has...Bluffs is comparable in composition and detrital zircon signature to Devonian sandstones in both the Ellsworth...to Permian strata in the southern Karoo and Falkland Islands suggests deposition in a separate and distinct...form the present collage of blocks that constitute West Antarctica and the Antarctic Peninsula. Two continental | | | Journal (article/letter/editorial) | Accepted Manuscript The Falkland Plateau in the context of Gondwana breakup Claudia Monika Schimschal...Claudia Monika Schimschal, Wilfried Jokat , The Falkland Plateau in the context of Gondwana breakup. Gr...the journal pertain. ACCEPTED MANUSCRIPT The Falkland Plateau in the context of Gondwana breakup Claudia...Jokat) Abstract NU During the Jurassic, the Falkland Plateau was part of Gondwana and occupied a MA...currently ED unknown crustal structure of the Falkland Plateau. Here, we present the results of recently | | 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) | doi:10.1017/S0016756815000370 460 Detrital zircon UâPb ages of the Palaeozoic Natal Group and Msikaba...Formation (Cape Supergroup) were obtained. A total of 882 concordant UâPb ages of detrital zircon populations...Mesoproterozoic detrital zircon age populations are present in the detrital zircon content of all the samples...sources of detritus. The NamaquaâNatal Metamorphic Complex is suggested as a possible source of minor late...Msikaba Formation, Provenance, UâPb ages, detrital zircon. 1. Introduction The pre-Karoo early Palaeozoic | | | Journal (article/letter/editorial) | Jaecke1, T.S Brewer,A Nemchin and Razakamanana.T New zircon ages for Precambrian granites, gneisses a n d granulites...gcochronological data from the Mesoproterozoic Cape Meredith Complex, West Falkland 10:30-10:50 D Seward, d . Grujic...Exhumation history of southern Madagascar as revealed by zircon and apatite fission-track thermochronology. 10:50-11:lO...in Southern India for correlations between South-West India and Eastern Madagascar. 9:20-9:40 J.G. Ghosh:...Muhongo: P-T paths of the Uluguru mountains granulite complex,Tanzania, and their bearing on the Pan-African | | | Journal (article/letter/editorial) | Antananarivo block, central Madagascar, as derived from zircon geochronology and Nd isotopic systematics. Amer...felsic magmatism in the Cretaceous Paresis ring complex, Namibia: evidence for mixing of crust and mantle-derived...Anrdt, N.T., Chauvel, C. and Duncan, R.A. (2000) A complex history for the Caribbean plateau: petrology, geochemistry... 4, No. 2,2001 Mesoproterozoic Cape Meredith Complex, west Falkland. Geol. Mag., v. 137, pp. 537-553 |
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