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• W4200115655 endingPage "106479" @default.
• W4200115655 startingPage "106479" @default.
• W4200115655 abstract "Deeply eroded collisional orogens show complex structural and inverted stratigraphic relations with juxtaposition of rock stacks from distinct crustal levels, origins and ages, hence with contrasting P-T-t paths during convergent tectonics. This paper presents petrochronological data on Paleoproterozoic (basement) and Ediacaran (cover) gneisses tectonically interleaved during the Ediacaran-Cambrian Búzios Orogeny, in southeastern Brazil. U-Pb in zircon and EPMA U-Th-Pb in monazite data, coupled with geothermobarometric data, plus Zr-in-rutile, reveal that at a first orogenic stage (ca. 530–520 Ma), these units were at distinct crustal levels. Samples within the Paleoproterozoic basement show metamorphic near-peak conditions of ∼800 °C and 10 kbar, at a depth of c.37 km. Contrastingly, Ediacaran kyanite-orthoclase-garnet-biotite granulite with retrometamorphic sillimanite (cover) reached near-peak conditions of 15 kbar and 818 °C–785 °C at depths of c. 55 km, in high-pressure granulite facies. This deep burial of Ediacaran sediments in less than 20 m.y. would be compatible with a low angle subduction zone active from ca. 550 to 530 Ma. Intrusion of ca. 550 Ma tholeiitic dykes in the Paleoproterozoic gneiss indicates a high geothermal gradient for this subduction setting, which is consistent with a low subduction rate. In a second orogenic stage (ca. 520–500 Ma), these distinct stratigraphic units were placed tectonically side by side during a fast exhumation, preserving an inverted metamorphic stack. The cover underwent retrometamorphic conditions of 800 °C and 10 kbar on a clockwise return path due to decompression. It is proposed here that the contact between reworked units within a Paleoproterozoic continental crust and Ediacaran magmatic and sedimentary units represent the suture of an Ediacaran NW-subduction of the Angola continental paleomargin below the Oriental Terrane of the Ribeira belt. This paper reports the highest pressure recorded in Ediacaran-Cambrian metamorphic rocks from the Brasiliano belts along the actual South Atlantic continental margins. The suture we propose here is aligned along strike, with a medium to high-pressure Ediacaran metamorphic occurrence 700 km to the SW, in the Curitiba Terrane." @default.
• W4200115655 created "2021-12-31" @default.
• W4200115655 creator A5010078564 @default.
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• W4200115655 creator A5071661670 @default.
• W4200115655 date "2022-01-01" @default.
• W4200115655 modified "2023-10-16" @default.
• W4200115655 title "Contrasting P-T-t paths of basement and cover within the Búzios Orogen, SE Brazil – Tracking Ediacaran-Cambrian subduction zones" @default.
• W4200115655 cites W1507548642 @default.
• W4200115655 cites W1599008295 @default.
• W4200115655 cites W1605368522 @default.
• W4200115655 cites W1821006145 @default.
• W4200115655 cites W1924636603 @default.
• W4200115655 cites W1965198886 @default.
• W4200115655 cites W1974844929 @default.
• W4200115655 cites W1975699988 @default.
• W4200115655 cites W1976529238 @default.
• W4200115655 cites W1982675620 @default.
• W4200115655 cites W1986398816 @default.
• W4200115655 cites W1991084489 @default.
• W4200115655 cites W1991965761 @default.
• W4200115655 cites W1993236627 @default.
• W4200115655 cites W1993407228 @default.
• W4200115655 cites W1996081112 @default.
• W4200115655 cites W1999621813 @default.
• W4200115655 cites W2003923628 @default.
• W4200115655 cites W2006584961 @default.
• W4200115655 cites W2012965805 @default.
• W4200115655 cites W2016882113 @default.
• W4200115655 cites W2019199307 @default.
• W4200115655 cites W2020139762 @default.
• W4200115655 cites W2024988782 @default.
• W4200115655 cites W2031380247 @default.
• W4200115655 cites W2032200127 @default.
• W4200115655 cites W2039872199 @default.
• W4200115655 cites W2040549377 @default.
• W4200115655 cites W2043479761 @default.
• W4200115655 cites W2043976278 @default.
• W4200115655 cites W2046293033 @default.
• W4200115655 cites W2049120158 @default.
• W4200115655 cites W2049155381 @default.
• W4200115655 cites W2056333558 @default.
• W4200115655 cites W2057322726 @default.
• W4200115655 cites W2059010589 @default.
• W4200115655 cites W2066540264 @default.
• W4200115655 cites W2066857664 @default.
• W4200115655 cites W2067833142 @default.
• W4200115655 cites W2070404541 @default.
• W4200115655 cites W2071680290 @default.
• W4200115655 cites W2073012350 @default.
• W4200115655 cites W2073840719 @default.
• W4200115655 cites W2075246458 @default.
• W4200115655 cites W2085414536 @default.
• W4200115655 cites W2087470623 @default.
• W4200115655 cites W2092260788 @default.
• W4200115655 cites W2094265612 @default.
• W4200115655 cites W2094568960 @default.
• W4200115655 cites W2098235917 @default.
• W4200115655 cites W2102619898 @default.
• W4200115655 cites W2108597026 @default.
• W4200115655 cites W2109182643 @default.
• W4200115655 cites W2112723426 @default.
• W4200115655 cites W2120989047 @default.
• W4200115655 cites W2128454112 @default.
• W4200115655 cites W2130293407 @default.
• W4200115655 cites W2131633408 @default.
• W4200115655 cites W2132746247 @default.
• W4200115655 cites W2132853177 @default.
• W4200115655 cites W2132986568 @default.
• W4200115655 cites W2145604970 @default.
• W4200115655 cites W2154648132 @default.
• W4200115655 cites W2156402670 @default.
• W4200115655 cites W2161567281 @default.
• W4200115655 cites W2176584425 @default.
• W4200115655 cites W2189996952 @default.
• W4200115655 cites W2206043844 @default.
• W4200115655 cites W2273096495 @default.
• W4200115655 cites W2295253922 @default.
• W4200115655 cites W2419271445 @default.
• W4200115655 cites W2468730741 @default.
• W4200115655 cites W2532072873 @default.
• W4200115655 cites W2572795148 @default.
• W4200115655 cites W2588040220 @default.
• W4200115655 cites W2614937491 @default.
• W4200115655 cites W2615540612 @default.
• W4200115655 cites W2732187293 @default.
• W4200115655 cites W2756487112 @default.
• W4200115655 cites W2763472481 @default.
• W4200115655 cites W2790655828 @default.
• W4200115655 cites W2792328293 @default.
• W4200115655 cites W2794137943 @default.
• W4200115655 cites W2803659734 @default.
• W4200115655 cites W2805561783 @default.

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