TABLE I
Table showing key correlation features for several Neoproterozoic units dominated by Bavlinella and/or Leiosphaeridia. Features shown include radiochronometric constraints (mainly U-Pb), δ13C, 87Sr/86Sr and relative. Sources of data: 1: Chiglino 2013CHIGLINO L. 2013. Quimiestratigrafía e Biostratigrafía da Formação Frecheirinha (Grupo Ubajara)-Nordeste do Brasil. PhD Thesis, Universidade Federal de Pernambuco, UFPE/BCTG 2013/320, p. 1-101. and this work. 2: Germs et al. (1986) GERMS GJB, KNOLL AH AND VIDAL G. 1986. Latest Proterozoic microfossils from the Nama Group, Namibia (South West Africa). Precambrian Res 32: 45-62., Grotzinger et al. (1995) GROTZINGER JP, BOWRING SA, SAyLOR BZ AND KAUFMAN AJ. 1995. Biostratigraphic and Geochronologic Con straints on Early Animal Evolution. Science 270: 598-604.. 3: Gaucher (2000) GAUCHER C. 2000. Sedimentology, palaeontology and stratigraphy of the Arroyo del Soldado Group (Vendian to Cambrian, Uruguay). Beringeria 26: 1-120., Gaucher and Poiré (2009) GAUCHER C, SIAL AN, POIRÉ D, GÓMEZ-PERAL L, FERREIRA VP AND PIMENTEL MM. 2009. Chemostratigraphy. Neoproterozoic-Cambrian evolution of the Río de la Plata Palaeocontinent. In: Gaucher C, Sial AN, Halverson GP and Frimmel HE (Eds), Neoproterozoic-Cambrian tectonics, global change and evolution: a focus on southwestern Gondwana. Developments in Precambrian Geol, 16, Elsevier, p. 115-122., Gaucher et al. (2009) GAUCHER C, SIAL AN, POIRÉ D, GÓMEZ-PERAL L, FERREIRA VP AND PIMENTEL MM. 2009. Chemostratigraphy. Neoproterozoic-Cambrian evolution of the Río de la Plata Palaeocontinent. In: Gaucher C, Sial AN, Halverson GP and Frimmel HE (Eds), Neoproterozoic-Cambrian tectonics, global change and evolution: a focus on southwestern Gondwana. Developments in Precambrian Geol, 16, Elsevier, p. 115-122., Blanco et al. (2009) BLANCO G, RAJESH HM, GAUCHER C, GERMS GJB AND CHEMALE JR F. 2009. Provenance of the Arroyo del Soldado Group (Ediacaran to Cambrian, Uruguay): Implications for the paleogeographic evolution of southwestern Gondwana. Precambrian Res 171: 57-73.. 4: Gaucher et al. (2003) GAUCHER C, BOGGIANI PC, SPRECHMANN P, SIAL AN AND FAIRCHILD TR. 2003. Integrated correlationof the Vendian to Cambrian Arroyo del Soldado and Corumba Groups (Uruguay and Brazil) palaeogeographic, palaeoclimatic and palaeobiologic impli- cations. Precambrian Res 120: 241-278., Boggiani et al. (2010) BOGGIANI PC, GAUCHER C, SIAL AN, BAbINSKI M, SIMON CM, RICCOMINI C, FERREIRA VP AND FAIRCHILD TR. 2010. Chemostratigraphy of the Tamengo Formation (Corumbá Group, Brazil): a contribution to the calibration of the Ediacaran carbon-isotope curve. Precambrian Res 182: 382-401.. 5: Mallmann et al. (2007) MALLMANN G, CHEMALE F, AVILA JN, KAWASHITA K AND ARMSTRONG RA. 2007. Isotope geochemistry and geochronology of the Nico Pérez Terrane, Río de la Plata Craton, Uruguay. Gondwana Res 12: 489-508., Gaucher et al. (2008) GAUCHER C, BLANCO G, CHIGLINO L, POIRÉ DG AND GERMS GJB. 2008. Acritarchs of Las Ventanas Formation (Ediacaran, Uruguay): implications for the timing of coeval rifting and glacial events in western Gondwana. Gondwana Res 13: 488-501., Oyhantçabal et al. (2009) OyHANTÇAbAL PB, SIEGESMUND S, WEMMER K, PRESNyAKOV S AND LAyER P. 2009. Geochronological constraints on the evolution of the southern Dom Feliciano Belt (Uruguay). J Geol Soc London 166: 1075-1084.. 6: Grey (2005) GREy K. 2005. Ediacaran palynology of Australia. Memoir Association of Australasian Palaeontologists 31: 1-439., Walter et al. (2000) WALTER MR, VEEVERS JJ, CALVER CR, GORJAN P AND HILL AC. 2000. Dating the 840-544 Ma Neoproterozoic interval by isotopes of strontium, carbon and sulphur in seawater and some interpretative models. Precambrian Res 100: 371-433., Kendall et al. (2006) KENDALL BS, CREASER RA AND SELby D. 2006. Re-Os geochronology of postglacial black shales in Australia: constraints on the timing of ''Sturtian'' glaciation. Geology 34: 729-732.. 7: Yin and Yuan (2007) YIN L AND YUAN X. 2007. Radiation of Meso-Neoproterozoic and early Cambrian protists inferred from the microfossil record of China. Palaeogeog, Palaeoclimatol, Palaeoecol 254: 350-361., Zhang et al. (2008) ZHANG S, JIANG G AND HAN Y. 2008. The age of the Nantuo Formation and Nantuo glaciation in South China. Terra Nova 20: 289-294.. 8: Germs et al. (2009) GERMS GJB, MILLER R MCG, FRIMMEL HE AND GAUCHER C. 2009. Syn- to late-orogenic sedimentary basins of southwestern Africa. Neoproterozoic to Early Palaeozoic evolution of southwestern Africa. In: Gaucher C, Sial AN, Halverson GP and Frimmel HE (Eds), Neoproterozoic-Cambrian tectonics, global change and evolution: a focus on southwestern Gondwana. Developments in Precambrian Geol, 16, Elsevier, p. 183-203., Halverson et al. 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Chuar Group of the Grand Canyon: Record of breakup of Rodinia, associated change in the global carbon cycle, and ecosystem expansion by 740 Ma. Geology 28: 619-622..
