Linking the basement geology along the Africa-South America coasts in the South Atlantic
The match of geological units of the dissected Kaoko-Dom Feliciano-Gariep orogenic system exposed along the coasts of the South Atlantic is poorly understood. Two suites of intrusive rocks crop out in the Angra Fria Bay area, a part of the Coastal Terrane of the Kaoko Belt in Namibia. U–Pb zircon da...
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Online Access: | https://doi.org/10.1016/j.precamres.2016.05.011 http://hdl.handle.net/11104/0259878 |
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ftczacademyscien:oai:asep.lib.cas.cz:CavUnEpca/0459707 2024-02-11T10:08:37+01:00 Linking the basement geology along the Africa-South America coasts in the South Atlantic Konopásek, J. Sláma, J. (Jiří) Košler, J. 2016 https://doi.org/10.1016/j.precamres.2016.05.011 http://hdl.handle.net/11104/0259878 eng eng doi:10.1016/j.precamres.2016.05.011 urn:pissn: 0301-9268 urn:eissn: 1872-7433 http://hdl.handle.net/11104/0259878 Gondwana reconstruction South Atlantic Ocean Plate tectonics Kaoko Belt Dom Feliciano Belt info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2016 ftczacademyscien https://doi.org/10.1016/j.precamres.2016.05.011 2024-01-16T17:16:55Z The match of geological units of the dissected Kaoko-Dom Feliciano-Gariep orogenic system exposed along the coasts of the South Atlantic is poorly understood. Two suites of intrusive rocks crop out in the Angra Fria Bay area, a part of the Coastal Terrane of the Kaoko Belt in Namibia. U–Pb zircon dating of three samples from the younger suite provided ages of 574 ± 6, 586 ± 3 and 584 ± 7 Ma, similar to the ages of the oldest syn-collisional granitoids in the area. Three samples of the older suite gave ages of 626 ± 5, 622 ± 5 and 620 ± 6 Ma respectively, which have not previously been recorded in intrusive rocks of the Kaoko Belt, but which coincide with those from the Florianópolis Batholith in the Dom Feliciano Belt in Brazil. Zircon ages, Sr–Nd isotopic composition and tectonic position of these granitoids suggest that this magmatic complex could be a continuation of the Florianópolis Batholith on the African side of the Atlantic Ocean. Consequently, the Angra Fria intrusions and the Florianópolis Batholith may represent suitable localities for spatial reconstruction of the Gondwana supercontinent in the area, where the robust pre-Mesozoic connecting points are scarce. Article in Journal/Newspaper South Atlantic Ocean The Czech Academy of Sciences: Publication Activity (ASEP) Precambrian Research 280 221 230 |
institution |
Open Polar |
collection |
The Czech Academy of Sciences: Publication Activity (ASEP) |
op_collection_id |
ftczacademyscien |
language |
English |
topic |
Gondwana reconstruction South Atlantic Ocean Plate tectonics Kaoko Belt Dom Feliciano Belt |
spellingShingle |
Gondwana reconstruction South Atlantic Ocean Plate tectonics Kaoko Belt Dom Feliciano Belt Konopásek, J. Sláma, J. (Jiří) Košler, J. Linking the basement geology along the Africa-South America coasts in the South Atlantic |
topic_facet |
Gondwana reconstruction South Atlantic Ocean Plate tectonics Kaoko Belt Dom Feliciano Belt |
description |
The match of geological units of the dissected Kaoko-Dom Feliciano-Gariep orogenic system exposed along the coasts of the South Atlantic is poorly understood. Two suites of intrusive rocks crop out in the Angra Fria Bay area, a part of the Coastal Terrane of the Kaoko Belt in Namibia. U–Pb zircon dating of three samples from the younger suite provided ages of 574 ± 6, 586 ± 3 and 584 ± 7 Ma, similar to the ages of the oldest syn-collisional granitoids in the area. Three samples of the older suite gave ages of 626 ± 5, 622 ± 5 and 620 ± 6 Ma respectively, which have not previously been recorded in intrusive rocks of the Kaoko Belt, but which coincide with those from the Florianópolis Batholith in the Dom Feliciano Belt in Brazil. Zircon ages, Sr–Nd isotopic composition and tectonic position of these granitoids suggest that this magmatic complex could be a continuation of the Florianópolis Batholith on the African side of the Atlantic Ocean. Consequently, the Angra Fria intrusions and the Florianópolis Batholith may represent suitable localities for spatial reconstruction of the Gondwana supercontinent in the area, where the robust pre-Mesozoic connecting points are scarce. |
format |
Article in Journal/Newspaper |
author |
Konopásek, J. Sláma, J. (Jiří) Košler, J. |
author_facet |
Konopásek, J. Sláma, J. (Jiří) Košler, J. |
author_sort |
Konopásek, J. |
title |
Linking the basement geology along the Africa-South America coasts in the South Atlantic |
title_short |
Linking the basement geology along the Africa-South America coasts in the South Atlantic |
title_full |
Linking the basement geology along the Africa-South America coasts in the South Atlantic |
title_fullStr |
Linking the basement geology along the Africa-South America coasts in the South Atlantic |
title_full_unstemmed |
Linking the basement geology along the Africa-South America coasts in the South Atlantic |
title_sort |
linking the basement geology along the africa-south america coasts in the south atlantic |
publishDate |
2016 |
url |
https://doi.org/10.1016/j.precamres.2016.05.011 http://hdl.handle.net/11104/0259878 |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_relation |
doi:10.1016/j.precamres.2016.05.011 urn:pissn: 0301-9268 urn:eissn: 1872-7433 http://hdl.handle.net/11104/0259878 |
op_doi |
https://doi.org/10.1016/j.precamres.2016.05.011 |
container_title |
Precambrian Research |
container_volume |
280 |
container_start_page |
221 |
op_container_end_page |
230 |
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1790608046929477632 |