Výsledky vyhledávání - "Clarisa Vorster"

New insight into the tectonic setting of fault-bounded Indian Gondwana coal basins from U–Pb detrital zircon provenance ages of the Bokaro and Jharia basins, central east India

Autor: Laura Leigh Jeffrey, Nicolas Beukes, Clarisa Vorster, Joydip Mukhopadhyay

Publikováno v: Geological Magazine. 160:334-354

A detrital zircon U–Pb laser ablation–inductively coupled plasma–quadrupole mass spectrometry (LA-ICP-QMS) provenance study was undertaken on samples selected from the Lower Gondwana successions preserved in the fault-bounded Bokaro and Jharia

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b9dedfdb56ccf1fdaf128a28c0f10825
https://doi.org/10.1017/s0016756822000930

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Garnet-bearing low-Sr and high-Sr Singelele leucogranite: A record of Neoarchean episodic melting in collisional setting and Paleoproterozoic overprint in the Beit Bridge complex, southern Africa

Autor: H.M. Rajesh, Oleg G. Safonov, Clarisa Vorster, G.A. Belyanin, D. D. van Reenen

Publikováno v: Lithos. 322:67-86

The study presents field, petrographic, mineral chemical, bulk-rock geochemical, U–Pb zircon and 40Ar/39Ar amphibole-biotite geochronologic characteristics of the Singelele leucogranite, which constitutes a prominent Neoarchean magmatic event in th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::10cb8ee23afaea9049397cb8aa239158
https://doi.org/10.1016/j.lithos.2018.10.004

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Long-lived stable shelf deposition along Gondwana's southern margin during the Ordovician-Silurian: Inferences from U Pb detrital zircon ages of the Table Mountain Group (South Africa) and correlatives in Argentina and the Falklands/Malvinas Islands

Autor: Cameron R. Penn-Clarke, Nicolas J. Beukes, Jan D. Kramers, Clarisa Vorster

Publikováno v: Chemical Geology. 576:120274

The Ordovician-Silurian siliciclastic units of the Table Mountain Group (TMG; Cape Supergroup) of the Cape Fold Belt (CFB) are classically considered to signify a period of long-lived sedimentation along the southern margin of southern Africa. Despit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2a5253893a32199bd6c265558fbaf36f
https://doi.org/10.1016/j.chemgeo.2021.120274

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Palynostratigraphic correlation of the Springbok Flats coalfield to other coal-bearing successions in the Karoo basins of southern Africa

Autor: Clarisa Vorster, Marion K. Bamford, Jan Kramers, Natasha Barbolini, V. Nxumalo, Bruce Cairncross, Nicola J. Wagner

Publikováno v: South African Journal of Geology, 122(1), 1-16. Geological Society of South Africa/Geologiese Vereniging van Suid-Afrika

Strata of the Springbok Flats, Ellisras and Tshipise (Soutpansberg-Pafuri) basins of South Africa are considered to have been deposited contemporaneously with those of the main Karoo Basin (MKB), but lithological differences complicate precise correl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c782fda880598379b09bf018e6de7944
https://dare.uva.nl/personal/pure/en/publications/palynostratigraphic-correlation-of-the-springbok-flats-coalfield-to-other-coalbearing-successions-in-the-karoo-basins-of-southern-africa(9d073503-9830-4a67-b340-5c3f08c29793).html

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Constraining provenance for the uraniferous Paleoproterozoic Francevillian Group sediments (Gabon) with detrital zircon geochronology and geochemistry

Autor: Clarisa Vorster, Christophe Ballouard, Alina Fiedrich, Frantz Ossa Ossa, Francis Mayaga-Mikolo, Ronny Schoenberg, Axel Hofmann, Andrey Bekker

Publikováno v: Precambrian Research. 343:105724

The Paleoproterozoic sandstones of the ca. 2.1 Ga Francevillian Group, southeast Gabon, host the oldest known redox-controlled high-grade uranium (U) deposits. Uranium-bearing detrital minerals (e.g., monazite) in the Francevillian Group sediments we

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2dcc43a36628c04f136d45c8f41349c2
https://doi.org/10.1016/j.precamres.2020.105724

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Detrital zircon U–Pb ages of the Palaeozoic Natal Group and Msikaba Formation, Kwazulu-Natal, South Africa: provenance areas in context of Gondwana

Autor: Clarisa Vorster, Jan Kramers, Herman Van Niekerk, N.J. Beukes

Publikováno v: Geological Magazine. 153:460-486

The Natal Group and Msikaba Formation remain relatively poorly understood with regards to their provenance and relative age of deposition; a much-needed geochronological study of the detrital zircons from these two units was therefore undertaken. Fiv

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4a2a86335a23e7d7f04d9b05f213810b
https://doi.org/10.1017/s0016756815000370

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Distribution and solubility limits of trace elements in hydrothermal black smoker sulfides: An in-situ LA-ICP-MS study

Autor: Clarisa Vorster, Fanus Viljoen, Cora C. Wohlgemuth-Ueberwasser, Sven Petersen

Publikováno v: Geochimica et Cosmochimica Acta

The key for understanding the trace metal inventory of currently explored VHMS deposits lies in the understanding of trace element distribution during the formation of these deposits on the seafloor. Recrystallization processes already occurring at t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2b9f317d636bfd0dfd412b3872bf2164
https://doi.org/10.1016/j.gca.2015.03.020

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