 | | Journal (article/letter/editorial) | | stishovite-bearing pseudotachylytes and the age of the Vredefort impact event JOHNG. SPRAyl, SIMONP. KELLEy 2 ANDW...University ofthe Witwatersrand, Johannesburg, South Africa (Received 1994 May 27; accepted in revisedform...pseudotachylytic rocks from the controversial Vredefort structure of South Africa using the laser microprobe 40ArP9Ar...fresher centres of veins. The best weighted mean pseudotachylyte matrix age obtained was 2018 ± 14 Ma (2 cry...cry. Most of the clasts within the pseudotachylyte matrices retain significantly older (e.g., Archean) |  | | Journal (article/letter/editorial) | | STABLE ISOTOPE EVIDENCE FOR IMPACT-RELATED PSEUDOTACHYLITE FORMATION AT VREDEFORT BY LOCAL MELTING OF DRY...Sciences, University of Cape Town, Rondebosch 7701, South Africa e-mail: chris.harris@uct.ac.za D.S. FOURIE...Sciences, University of Cape Town, Rondebosch 7701, South Africa e-mail: duanefourie@gmail.com A. FAGERENG Department...7701, South Africa e-mail: ake.fagereng@uct.ac.za © 2013 June Geological Society of South Africa ABSTRACT...water content of impact-related granophyre, and pseudotachylite, from various Vredefort Dome localities |  | Reimold, Wolf Uwe, Hauser, Natalia, Hansen, Bent T., Thirlwall, Matthew, Hoffmann, Marie (2018) Reply to “Comments on “The impact pseudotachylitic breccia controversy: Insights from first isotope analysis of Vredefort impact-generated melt rocks” by Reimold et al. 2017 (GCA 214, 266–282)” by A.A. Garde and M.B. Klausen (GCA 233, 187–190) Geochimica et Cosmochimica Acta, 240. 331-332 doi:10.1016/j.gca.2018.08.016 | Journal (article/letter/editorial) | | on”The impact pseudotachylitic breccia controversy: insights from first isotope analysis of Vredefort impact-generated...on”The impact pseudotachylitic breccia controversy: insights from first isotope analysis of Vredefort impact-generated...„The impact pseudotachylitic breccia controversy: insights from first isotope analysis of Vredefort impact-generated...Breccias melt rocks or cataclasites? 2. Are the Vredefort Pseudotachylitic Breccias (PTB) melt rocks or...option? 4. Is cataclasis by shock compression and impact-related seismic activity a better explanation for |  | Reimold, W.U., Hoffmann, M., Hauser, N., Schmitt, R-T., Zaag, P.T., Mohr-Westerheide, T. (2016) A geochemical contribution to the discussion about the genesis of impact-related pseudotachylitic breccias: Studies of PTB in the Otavi and Kudu Quarries of the Vredefort Dome support the“In Situ Formation”hypothesis. South African Journal of Geology, 119 (3) 453-472 doi:10.2113/gssajg.119.3.453 | Journal (article/letter/editorial) | | the genesis of impact-related pseudotachylitic breccias: Studies of PTB in the Otavi and Kudu Quarries...Quarries of the Vredefort Dome support the “In Situ Formation” hypothesis W.U. Reimold Museum für Naturkunde...n.de © 2016 September Geological Society of South Africa Abstract This work is aimed at contributing...formation of massive pseudotachylitic breccias (PTB) in impact structures. In the past this has been debated as...combination of injection of impact melt from a higher level of the impact structure plus assimilation of other |  | | Journal (article/letter/editorial) | | allochthonous, possibly impact melt, origin of pseudotachylite from the Vredefort Dome, South Africa Daniel Lieger...Private Bag 3, P.O. Wits 2050, Johannesburg, South Africa Received 18 October 2010; accepted in revised...origin of pseudotachylite bodies formed during impact cratering include: (1) frictional heating, (2)...shock loading, (3) decompression or (4) drainage of impact melt into target rocks. In order to differentiate...composition akin to the average composition of Vredefort Granophyre dikes. Within veins, melt transport |  | Kovaleva, E., Huber, M.S., Roelofse, F., Tredoux, M., Praekelt, H. (2019) Reply to the comment made by W.U. Reimold on “Pseudotachylite vein hosted by a clast in the Vredefort Granophyre: characterization, origin and relevance” by E. Kovaleva et al., South African Journal of Geology, 2018, 121, 51-68. doi:10.25131/sajg.121.0002. South African Journal of Geology, 122 (1) 109-115 doi:10.25131/sajg.122.0006 | Journal (article/letter/editorial) | | in the Vredefort Granophyre: characterization, origin and relevance” by E. Kovaleva et al., South African...University of the Free State, 205 Nelson Mandela Drive, 9300 Bloemfontein, South Africa e-mail: kovalevae@ufs...praekehe@ufs.ac.za © 2019 March Geological Society of South Africa The comments on our paper (Kovaleva et al....of the sample used, in terms of the proposed Vredefort World Heritage Site; • the quality of the geochemical...to prevent other researchers from sampling in Vredefort, while he and his co-authors are apparently not |  | | Journal (article/letter/editorial) | | shock-induced pseudotachylites, Vredefort impact structure, South Africa Elizaveta Kovaleva, Matthew S...shock-induced pseudotachylites, Vredefort impact structure, South Africa, LITHOS (2020), https://doi.org/10...shock-induced pseudotachylites, Vredefort impact structure, South Africa Elizaveta Kovalevaa,* kovalevae@ufs...University of the Free State, 205 Nelson Mandela Drive, 9300 Bloemfontein, South Africa b ur na lP ...of Pretoria, 0028 Pretoria, South Africa Journal Pre-proof ABSTRACT Impact-generated pseudotachylites |  | | Journal (article/letter/editorial) | | pseudotachylitic breccias in the central uplifts of very large impact structures: Scaling the melt formation Tanja MOHR-WESTHEIDE*...occurrences of pseudotachylitic breccia (PTB) in impact structures have been strongly debated for decades...these processes; or (5) intrusion of allochthonous impact melt from a coherent melt body has been advocated...meter-sized occurrences from the type location, the Vredefort Dome. This complex Archean to early Proterozoic...the originally >250 km diameter Vredefort impact structure in South Africa. Previously, results of microstructural |  | | Journal (article/letter/editorial) | | Texas meteorites, and prepared an article on pseudotachylyte in meteorites (Barnes, I940a-f). * Barringer...unless the irgizite impactites from the Zhamanshin impact crater in Russia are considered to be tektites;...to those cut from tektites in showing fluidal structure and the presence of lechatelierite. Additional...supports this conclusion and is consistent with the impact origin oftektites (Glass, 1989)." In view of this...ofSouth Africa also attended this meeting. Shand (1916) had proposed the name pseudotachylyte for veins |  | Reimold, Wolf Uwe, Hauser, Natalia, Hansen, Bent T., Thirlwall, Matthew, Hoffmann, Marie (2017) The impact pseudotachylitic breccia controversy: Insights from first isotope analysis of Vredefort impact-generated melt rocks. Geochimica et Cosmochimica Acta, 214. 266-281 doi:10.1016/j.gca.2017.07.040 | Journal (article/letter/editorial) | | The Impact Pseudotachylitic Breccia Controversy: Insights from First Isotope Analysis of Vredefort Impact-Generated...The Impact Pseudotachylitic Breccia Controversy: Insights from First Isotope Analysis of Vredefort Impact-Generated... The Impact Pseudotachylitic Breccia Controversy: Insights from First Isotope Analysis of Vredefort Impact-Generated...reimold@mfn-berlin.de ABSTRACT Besides impact melt rock, several large terrestrial impact structures, notably the Sudbury...Sudbury (Canada) and Vredefort (South Africa) structures, exhibit considerable occurrences of a second |  | Crósta, A.P., Reimold, W.U., Vasconcelos, M.A.R., Hauser, N., Oliveira, G.J.G., Maziviero, M.V., Góes, A.M. (2019) Impact cratering: The South American record – Part 1. Geochemistry, 79 (1) 1-61 doi:10.1016/j.chemer.2018.06.001 | Journal (article/letter/editorial) | | elsevier.com/locate/chemer Invited review Impact cratering: The South American record – Part 1 ⁎ A.P. Cróstaa...J.G. Oliveiraa, M.V. Mazivieroa, A.M. Góese a State University of Campinas, Brazil University of Brasília...Keywords: Impact crater Impact structure Impact record Shock metamorphism Meteorite Impact glasses Tektites...Distal ejecta K-Pg boundary Airburst South America The Earth’s impact record is known to be rather limited...190 impact structures currently known on Earth, representing a minor fraction of all the impact events |  | | Book | | Germany Maarten J. de Wit, Port Elizabeth, South Africa François M. Roure, Rueil-Malmaison, France ... Each book aims to provide the reader with the state-of-the-art understanding of a regions geology with...relevant protective laws and regulations and therefore free for general use. The publisher, the authors and...borders of Namibia and South Africa. They were split up in the Mesozoic during the south Atlantic Ocean opening”...opening”. Photo by Mathias Hueck Printed on acid-free paper This Springer imprint is published by the registered |  | | Journal (article/letter/editorial) | | 45 – 85 www.elsevier.com/locate/gr GR Focus Structure and strain variation at mid-crustal levels in...transpressional orogen: A review of Kaoko Belt structure and the character of West Gondwana amalgamation...Environmental Sciences, Adelaide University, Adelaide, South Australia, 5005, Australia b School of Earth Sciences...cover, with inclination decreasing towards the south. The Kaoko Belt is a well-exposed sector of an extensive...Orogen” that amalgamated West Gondwana, bringing the South American (Sao Francisco and Rio de la Plata Cratons) |  | | Book (edition) | | OF OF SOUTH AFRICA MINES GEOLOGICAL SURVEY MINERAL RESOURCES OF REPUBLIC OF THE SOUTH AFRICA...Government Private Bag X85, Price R5,30 Abroad Post Free ISBN Printer, Bosman Pretoria, 0001 R6,65 O...Second World War, and partly as a result of it, South Africa experienced vast industrial expansion. This...official ‘handbook on the mineral resources of South Africa, it has become necessary to revise, or rather...reason of the great diversity and magnitude of South African mineral deposits and local mining operations |  | | Book | | Sciences University of Cape Town Rondebosch, South Africa ISSN 2510-1307 ISSN 2510-1315 (electronic)...relevant protective laws and regulations and therefore free for general use. The publisher, the authors and.... . . . . . . . . . . . . . . . . . Internal Structure and Emplacement of Intrusive Bodies . . . . .... . . . . . . . 299 Chemical Composition and Structure of Magma . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . . . . . . Structure and Texture of Metamorphic Rocks . . . . . . |  | | Conference Proceedings | | University, and Vice-Chair, Dick Berg, Illinois State Geological Survey spent many hours assembling a...Education and Outreach Chair, Rick Aster, Colorado State University, and the student committee have organized...in subscription journals Measuring the broader impact of your paper in a Wiley Journal Expert help to...enrich, and share your paper for greater research impact wileyauthors.com •••••• ....•... i • Ease Quality...Quality Reach ~.:..=== j ......,, ...,.•' Impact WILEY Messa~B from A resident lla 6a ora a ne«:llJlitouefQ)o |  | | Report (issue) | | 327 K. Mickus 17. Variations in lithospheric structure across the nzargin of Baltica in Central Europe...Rifted-1nargin architecture, cover stratigraphy, and structure of basement culminations, frontal Appalachian...·- -0 - ·- (1) C ·.;::: C 0 (.) :.0 Vredefort Bushveld .' Transvaal 0) -- - early grey...2.1 Ga old event of matic.: magmatn,m in Vv'e~l Africa: An early ,rage or crustal accretion: Journal of...Barberton Mountain Land: Geological Society of South Africa Special Publication 9, 223 [>. Arm~trong. R |
|
