Please use this identifier to cite or link to this item: http://dlib.scu.ac.ir/handle/1956/15728
Title: Linking the basement geology along the Africa-South America coasts in the South Atlantic
subject: Gondwana reconstruction;South Atlantic Ocean;Plate tectonics;Kaoko Belt;Dom Feliciano Belt
Publisher: Elsevier
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.
acceptedVersion
Journal Article
URI: https://deepblue.lib.umich.edu/handle/1956/15728
More Information: Konopasek J, Slama J, Košler J. Linking the basement geology along the Africa-South America coasts in the South Atlantic. Precambrian Research. 2016;280:221-230
http://hdl.handle.net/1956/15728
1370915
10.1016/j.precamres.2016.05.011
Appears in Collections:Department of Earth Science

Files in This Item:
Click on the URI links for accessing contents.
Title: Linking the basement geology along the Africa-South America coasts in the South Atlantic
subject: Gondwana reconstruction;South Atlantic Ocean;Plate tectonics;Kaoko Belt;Dom Feliciano Belt
Publisher: Elsevier
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.
acceptedVersion
Journal Article
URI: https://deepblue.lib.umich.edu/handle/1956/15728
More Information: Konopasek J, Slama J, Košler J. Linking the basement geology along the Africa-South America coasts in the South Atlantic. Precambrian Research. 2016;280:221-230
http://hdl.handle.net/1956/15728
1370915
10.1016/j.precamres.2016.05.011
Appears in Collections:Department of Earth Science

Files in This Item:
Click on the URI links for accessing contents.
Title: Linking the basement geology along the Africa-South America coasts in the South Atlantic
subject: Gondwana reconstruction;South Atlantic Ocean;Plate tectonics;Kaoko Belt;Dom Feliciano Belt
Publisher: Elsevier
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.
acceptedVersion
Journal Article
URI: https://deepblue.lib.umich.edu/handle/1956/15728
More Information: Konopasek J, Slama J, Košler J. Linking the basement geology along the Africa-South America coasts in the South Atlantic. Precambrian Research. 2016;280:221-230
http://hdl.handle.net/1956/15728
1370915
10.1016/j.precamres.2016.05.011
Appears in Collections:Department of Earth Science

Files in This Item:
Click on the URI links for accessing contents.