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Pre-orogenic connection of the foreland domains of the Kaoko–Dom Feliciano–Gariep orogenic system
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SYSNO ASEP 0536855 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Pre-orogenic connection of the foreland domains of the Kaoko–Dom Feliciano–Gariep orogenic system Tvůrce(i) Percival, J. J. (NO)
Konopásek, J. (CZ)
Eiesland, R. (NO)
Sláma, Jiří (GLU-S) SAI, RID, ORCID
de Campos, R. S. (BR)
Battisti, M. A. (BR)
Bittencourt, M. de F. (BR)Číslo článku 106060 Zdroj.dok. Precambrian Research. - : Elsevier - ISSN 0301-9268
Roč. 364, March (2021)Poč.str. 20 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova Gondwana ; Rodinia ; Dom Feliciano Belt ; Kaoko Belt ; Neoproterozoic ; Rifting Vědní obor RIV DB - Geologie a mineralogie Obor OECD Geology Způsob publikování Open access Institucionální podpora GLU-S - RVO:67985831 UT WOS 000615712000023 EID SCOPUS 85098718888 DOI 10.1016/j.precamres.2020.106060 Anotace Neoproterozoic metasedimentary rocks in the foreland domains of the Kaoko–Dom Feliciano–Gariep orogenic system record sedimentation from the breakup of Rodinia to the amalgamation of Gondwana, and thus provide ideal subjects for investigation of the mutual pre-orogenic positions of rifted margins of the African and South American cratonic blocks. U–Pb isotopic dating of zircon in the Brusque Complex of the northern Dom Feliciano Belt, Brazil, provides new constraints on the timing and sources of Neoproterozoic sedimentation along the eastern margin of the Luis Alves Craton. The minimum age of sedimentation is constrained by a U–Pb zircon age of 811 ± 6 Ma from a dyke cross-cutting the Brusque Complex. U–Pb detrital zircon analysis reveals two distinct groups: one with ages ca. 2.2–2.0 Ga consistent with erosion of the adjacent Luis Alves Craton, and another with ages ca. 2.1–1.8 and 1.6–1.0 Ga consistent with erosion of Paleoproterozoic to Mesoproterozoic igneous provinces and/or supracrustal sequences at the edge of the Congo Craton. The age distributions match with analogous rocks of the central Dom Feliciano Belt and the Kaoko Belt, and show similarities with the Gariep Belt, suggesting deposition in a system of coeval and spatially related paleobasins around the time of Rodinia breakup. The absence of Neoproterozoic detrital zircon close to the age of sedimentation suggests deposition in an intracontinental rift or passive margin. A third group contains a significant proportion of Neoproterozoic ca. 670–560 Ma zircon, suggesting similarities with the adjacent Itajaí Basin syn-orogenic foreland sedimentary rocks. This indicates that foreland basin sediments were partly tectonically interleaved with the pre-orogenic metasediments of the Brusque Complex during late-stage orogenic deformation. The findings support an intracontinental rifting model for the formation of the Kaoko–Dom Feliciano–Gariep basin system. The data further indicate that the Luis Alves Craton was in close proximity to the Congo Craton, and likely with the Nico Pérez Terrane and the Kalahari Craton, at the onset of Tonian rifting and the breakup of Rodinia. Pracoviště Geologický ústav Kontakt Jana Popelková, popelkova@gli.cas.cz, Sabina Janíčková, Tel.: 233 087 272 Rok sběru 2022 Elektronická adresa https://www.sciencedirect.com/science/article/pii/S0301926820306495
Počet záznamů: 1