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Chapter 48 Neoproterozoic successions of the São Francisco Craton, Brazil: The Bambuí, Una, Vazante and Vaza Barris/Miaba groups and their glaciogenic deposits - Photograph supplement

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Title: Chapter 48 Neoproterozoic successions of the São Francisco Craton, Brazil: The Bambuí, Una, Vazante and Vaza Barris/Miaba groups and their glaciogenic deposits - Photograph supplement
Author: Misi, Aroldo; Sial, Alcides
Abstract: Companion photographs to the book chapter Misi, Aroldo, Kaufman, Alan J., Azmy, Karem, Dardenne, Marcel A., Sial, Alcides N. and de Oliveira, Tolentino F. 2011. “Neoproterozoic successions of the São Francisco Craton, Brazil: The Bambuí, Una, Vazante and Vaza Barris/Miaba groups and their glaciogenic deposits”. In: Arnaud, E., Halverson, G. P. and Shields-Zhou, G. (eds) The Geological Record of Neoproterozoic Glaciations. Geological Society, London, Memoirs, 36, 509-522.
URI: http://hdl.handle.net/10214/9433
Date: 2011


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Ch48_Photo_1_Misi.jpg 27.83Kb JPEG image Thumbnail Laminated limestone (rhytmites), Unit B, Una Group, Irecê sub-basin. Correlated with Sete Lagoas Fm. 2 (middle section) of the Bambuí Gr., São Francisco Basin and possibly with Jacoca Fm., V.Barris/Miaba Gr. (Photo credit: Aroldo Misi).
Ch48_Photo_2_Misi.JPG 78.31Kb JPEG image Thumbnail Surface exposure with teepee structures and nodules of silica (length-slow quartz, pseudomorphs of sulphates). Unit B1, Una Gr., Irecê sub-basin. Correlated with the upper section of the Sete Lagoas Fm., Bambuí Gr. (Photo credit: Aroldo Misi).
Ch48_Photo_3_Misi.jpg 352.5Kb JPEG image Thumbnail Phosphate-rich columnar stromatolites with intercolumnar shallow-water dolarenite, Unit B1, Una Gr., Irecê sub-basin (Photo credit: Aroldo Misi).
Ch48_Photo_4_Misi.jpg 81.55Kb JPEG image Thumbnail Black, organic-rich limestone with oolitic and oncolitic beds. Unit A1, Una Gr., Irecê sub-basin. Correlated with Lagoa do Jacaré Fm., Bambuí Gr., SF basin, and possibly with Olhos d’Agua Fm., V. Barris/Miaba Gr.. Samples from Unit A1 show high positive δ13C excursions (+8 to +9.4‰ VPDB, Misi & Veizer, 1998 and Torquato & Misi, 1977) (Photo credit: Aroldo Misi).
Ch48_Photo_5_Sial.jpg 1.400Mb JPEG image Thumbnail Faceted clast of granitic rock within fine-grained metassediments, Palestina Fm. diamictite, Vaza-Barris/Miaba Gr., Sergipano Fold Belt (Photo credit: Alcides Sial).
Ch48_Photo_6_Misi.JPG 151.2Kb JPEG image Thumbnail Faceted clasts of carbonate rocks within organic-rich shale: Diamictite (D2), upper section of the Vazante Gr., Brasilia Fold Belt (Photo credit: Aroldo Misi).

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