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Sete Lagoas Formation

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δ 13 C and δ 18 O for the lower part of <span class="search-highlight">Sete</span> <span class="search-highlight">Lagoas</span> <span class="search-highlight">Formation</span> (in  Vieira e...
Published: 01 March 2015
Fig. 6.— δ 13 C and δ 18 O for the lower part of Sete Lagoas Formation (in Vieira et al. 2007 ).
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Fossil assemblage of <span class="search-highlight">Sete</span> <span class="search-highlight">Lagoas</span> <span class="search-highlight">Formation</span>, Brazil. A: Tubular shells of  C...
Published: 01 May 2014
Figure 2. Fossil assemblage of Sete Lagoas Formation, Brazil. A: Tubular shells of Cloudina filled by sparry calcite. Scale bar is 2 mm. B: Complete and fragmented specimens of Cloudina varying in length and diameter. Scale bar is 2 mm. C: Close-up view of dichotomous branching (clonal
Journal Article
Published: 28 February 2022
Journal of the Geological Society (2022) 179 (4): jgs2021-091.
...Juliana Okubo; Alan J. Kaufman; Lucas V. Warren; Michael N. Evans; Selva Marroquín; Michael A. Varni; Aroldo Misi; Anelize M. Bahniuk; Shuhai Xiao Abstract Since the report of tubular structures interpreted as Cloudina from the Neoproterozoic Sete Lagoas Formation (SLF) in the Bambuí basin...
Journal Article
Journal: PALAIOS
Published: 03 May 2023
PALAIOS (2023) 38 (4): 188–209.
... in Ediacaran–Cambrian successions in South America. This study documents the occurrence of MISS and other potential biogenic structures from the late Ediacaran Serra de Santa Helena Formation in the Bambuí Group of eastern Brazil. This unit overlies the Cloudina -bearing Sete Lagoas Formation and is a mixed...
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Journal Article
Published: 01 March 2015
Journal of Sedimentary Research (2015) 85 (3): 285–300.
...Fig. 6.— δ 13 C and δ 18 O for the lower part of Sete Lagoas Formation (in Vieira et al. 2007 ). ...
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A)  Geological map of the southern border of the São Francisco craton (SFC)...
Published: 01 March 2015
and location of crystal fans in Sete Lagoas Formation.
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A: Location of São Francisco craton (SFC) and geologic map of Ediacaran Bam...
Published: 01 May 2014
Figure 1. A: Location of São Francisco craton (SFC) and geologic map of Ediacaran Bambuí Group at Januária area, central Brazil. B: Lithostratigraphic column. G.—Group, Fm.—Formation, T.—Três, L.—Lago, S. Sta. Hel.—Serra de Santa Helena. C: Columnar section of peritidal facies deposits of Sete
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Paleoenvironmental reconstructions of aragonite-crystal-bearing facies in S...
Published: 01 March 2015
Fig. 8.— Paleoenvironmental reconstructions of aragonite-crystal-bearing facies in Sete Lagoas Formation. A limited marine connection may have allowed shallow-water inlets linking deeper basins where the various aragonite crystal-fan facies were deposited: A) micrite-settling facies, B) wave
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Composite carbon-isotope profiles and simplified stratigraphic columns span...
Published: 01 March 2018
13 C values in the Maieberg Formation in Namibia, comparable to the C1-C3 formations in DRC, and the lower part of the Sete Lagoas in Brazil, and (iii) a second negative to strong positive excursion in δ 13 C values in the Elandshoek-Huttenberg formations in Namibia, comparable to the C4-C5
Journal Article
Journal: Geology
Published: 01 May 2014
Geology (2014) 42 (5): 391–394.
...Figure 2. Fossil assemblage of Sete Lagoas Formation, Brazil. A: Tubular shells of Cloudina filled by sparry calcite. Scale bar is 2 mm. B: Complete and fragmented specimens of Cloudina varying in length and diameter. Scale bar is 2 mm. C: Close-up view of dichotomous branching (clonal...
FIGURES
Journal Article
Journal: GSA Bulletin
Published: 23 May 2024
GSA Bulletin (2024)
..., TAB11, and TAB17 samples), Upper Espinhaço Supergroup (TAB1, TAB5, TAB6, and TAB10 samples), Jerquitaí Formation (TAB2 sample), Macaúbas Group (TAB4 sample), Lower Sete Lagoas Formation (TAB20 sample), Três Marias Formation (TAB14 and TAB15 samples), and Areado Group (TAB13 sample). The Jequitaí...
Journal Article
Published: 14 August 2015
Petroleum Geoscience (2015) 21 (4): 285–299.
... source rocks. The Bambui Group is made up of silts and shales intercalated with limestone and dolomites, and it is subdivided into six formations: Tres Marias, Serra da Saudade, Lagoa do Jacaré, Serra de Santa Helena, Sete Lagoas and Carrancas ( Fig. 2 ). These are overlain by the sedimentary...
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Journal Article
Journal: Geology
Published: 02 December 2022
Geology (2023) 51 (1): 69–74.
... Formation would correspond to the Lagoa Santa Member of the Sete Lagoas Formation, preserving blackish stromatolites with δ 13 C as high as ~+10‰ and probably deposited ca. 580–550 Ma, according to U-Pb in situ carbonate LA-ICPMS dating ( Caxito et al., 2021 ). Finally, samples from the phosphatic inter...
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Journal Article
Published: 01 March 2018
South African Journal of Geology (2018) 121 (1): 23–42.
... 13 C values in the Maieberg Formation in Namibia, comparable to the C1-C3 formations in DRC, and the lower part of the Sete Lagoas in Brazil, and (iii) a second negative to strong positive excursion in δ 13 C values in the Elandshoek-Huttenberg formations in Namibia, comparable to the C4-C5...
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Series: Geological Society, London, Special Publications
Published: 01 January 2017
DOI: 10.1144/SP437.14
EISBN: 9781786202918
... of a semicircular crater that is slightly elongated in the NW–SE direction (5.2 × 4.8 km) with a total area of 18.5 km 2 . Within the Sete Cidade crater, two separated crater lakes are aligned from SSW to NNE: Lagoa Azul (Blue Lake) to the north and Lagoa Verde (Green Lake) to the south (Fig. 1 ). Lagoa Azul lake...
Series: Geological Society, London, Memoirs
Published: 01 January 2011
DOI: 10.1144/M36.50
EISBN: 9781862394117
... of diamictite and silty-clayey laminites. The strata, so far known at reconnaissance level, crop out extensively in the central-western State of Minas Gerais (Fig.  50.1 ), below carbonate assigned to the Sete Lagoas Formation (Fm.) of the Bambuí Group (Neoproterozoic) (Fig.  50.2 ). Fig. 50.1...
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Series: Geological Society, London, Memoirs
Published: 01 January 2015
DOI: 10.1144/M44.7
EISBN: 9781862397118
.... Lagoas Formation The Lagoas Formation comprises the more recent deposits of the Sete Cidades massif, younger than 16 ka, which originated in vents both inside the caldera and on the flanks of the central volcano. Most of the eruptions produced volcanic structures that contain lakes in their craters...
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Journal Article
Published: 23 February 2021
Journal of the Geological Society (2021) 178 (3): jgs2020-061.
.... 2019 ). Its lithostratigraphy is currently divided into five units composed of a marine shale–carbonate succession comprising from the base to top the following formations: Sete Lagoas (limestones and dolomites), Serra de Santa Helena (shales, siltstones and limestones), Lagoa do Jacaré (grainstones...
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Journal Article
Journal: GSA Bulletin
Published: 13 March 2023
GSA Bulletin (2023) 135 (11-12): 3102–3111.
.... , and Trindade , R.I.F. , 2007 , Direct dating of the Sete Lagoas cap carbonate (Bambuí Group, Brazil) and implications for the Neoproterozoic glacial events : Terra Nova , v. 19 , no. 6 , p. 401 – 406 , https://doi.org/10.1111/j.1365-3121.2007.00764.x . Babinski , M. , Boggiani , P.C...
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Series: Geological Society, London, Memoirs
Published: 01 January 2015
DOI: 10.1144/M44.10
EISBN: 9781862397118
... are located along the axial zone on the SE flank of Sete Cidades and are represented by the Lagoa do Canário, Canada Larga craters and one of the Lagoas da Achada craters. In the central sector a small elongated maar crater cuts into the base of the Coroa da Furna scoria cone. Basaltic lava flows Lava...
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