Zircon U–Pb ages of rocks from the Rio Apa Cratonic Terrane (Mato Grosso do Sul, Brazil): New insights for its connection with the Amazonian Craton in pre-Gondwana times

Faleiros, Frederico Meira; Pavan, Mauricio; Remédio, M. J.; Rodrigues, Joseneusa Brilhante; Almeida, Vidyã Vieira de; Caltabeloti, Fabrizio Prior; Pinto, Luiz Gustavo Rodrigues; Oliveira, Alexandre Adalardo de; Azevedo, E. J. Pinto de; Costa, Vicente Sérgio

doi:10.1016/j.gr.2015.02.018

Cited by 31 publications

(27 citation statements)

References 66 publications

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“…The high-velocity anomaly interpreted as the Rio Apa Craton does not extend northwards, beneath the Pantanal Basin, as proposed by Dragone et al (2017), and does not connect to the Amazonian Craton beneath the same basin, which would corroborate the geochronological studies of Faleiros et al (2016) andLacerda-Filho et al (2016). Unlike the results of , that proposed a much larger Rio Apa Block (high velocity anomaly extending between latitudes 20°S and 26°S), our results show an anomaly concentrated mostly between latitudes 20°S and 22°S (Figure 11).…”

Section: Rio Apa Cratonsupporting

confidence: 73%

Lithospheric Architecture of the Paranapanema Block and Adjacent Nuclei Using Multiple‐Frequency P‐Wave Seismic Tomography

et al. 2021

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We present a new P‐wave seismic tomographic model for the region of the Paraná Basin and surroundings using a multiple‐frequency approach, providing better resolution than previous regional studies. We processed a total of 62,692 cross‐correlation delays for P, PKIKP, PcP, and PP phases distributed among 1,081 events using six different central frequencies (0.03, 0.06, 0.13, 0.25, 0.50, and 1 Hz). We merged our data with a previous multiple‐frequency study of the Amazonian Craton to cover regions outside of the study area, obtaining a total of 75,187 cross‐correlation delays. The data used are from the stations of the Brazilian Seismographic Network, and mainly from a temporary network (XC network) installed exclusively to study the region. The basement of the Paraná Basin is represented as a NE‐SW trending P‐wave high‐velocity anomaly, extending from the northern limit of the basin to the southwestern border of Brazil, consistent with previous reports. The limit between this block and the São Francisco Craton is characterized by decreased amplitude of the P‐wave high‐velocity anomaly. Synthetic tests show that a narrow boundary between these two blocks displays the same behavior. At the southeastern portion of this anomaly, decreasing amplitude is consistent with the limit of the Luiz Alves Craton, which was also corroborated by synthetic tests. The northern portion of the Rio Apa Block agrees with a previous tomographic model, confirming that it does not extend under the Pantanal Basin, however, in our model this structure does not extend as far south.

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Section: Rio Apa Cratonsupporting

confidence: 73%

Lithospheric Architecture of the Paranapanema Block and Adjacent Nuclei Using Multiple‐Frequency P‐Wave Seismic Tomography

et al. 2021

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“…Therefore, a wide system could be predictable for the South American case during the Late Cretaceous because this system was formed largely on thick and old crust with high Te (Figs. 1 and 6), including the Proterozoic-Archean Amazonian Craton (Cordani and Teixeira, 2007), the Neoproterozoic Paraguay Belt (Godoy et al, 2010), the Paleoproterozoic Paranapanema Craton (Mantovani et al, 2005;Ramos et al, 2010), and the Paleoproterozoic Rio Apa Block (Godoy et al, 2009;Faleiros et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

The South American retroarc foreland system: The development of the Bauru Basin in the back-bulge province

Menegazzo

Catuneanu

Chang

2016

Marine and Petroleum Geology

101

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The aim of this research is to understand the tectonic setting of the Bauru Basin. This basin in centraleastern South America has been classified as intracratonic, but the basin-fill geometry, the involved subsidence mechanisms and the age of the deposits are poorly understood. In this work, the ranges of the fossil taxa are analyzed and ages are proposed for the lithostratigraphic units. Isopach maps were used to reconstruct the stratigraphic intervals of the basin fill. The stratigraphy of the Bauru Basin is compared with that of the adjacent basins, and the data are integrated with the available information on South American geodynamics. The fossil record indicates that sediment accumulated from the Cenomanian to early Paleocene, beginning after the Mochica Phase of the Andean orogeny. The basin-fill geometry demonstrates migration of the depocenter through time, which occurred simultaneously with migration of the Andean Basin and immediately after the orogenic events of the Peruvian Phase. We propose that the Bauru Basin is a component of a retroarc foreland system developed during the early stages of the Andean evolution and that it was developed in the back-bulge province of this system. The Andean Basin constitutes the foredeep depozone of this foreland system (including the Potosí, Oriente, Acre and Marañon basins). In addition, the Upper Cretaceous of the Parecis and Solimões basins were likely also developed in the back-bulge province. The thickness of the Bauru accumulation indicates that other mechanisms might have overlapped the flexural subsidence in this back-bulge province.

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“…Geochronological provinces of the Amazonian Craton. After Tassinari & Macambira (1999), Faleiros et al (2016, Nogueira et al (2019), Redes et al (2020) and Teixeira et al (2020). Table S1.…”

Section: Upper Sequence (S2)mentioning

confidence: 99%

Cryogenian glaciostatic and eustatic fluctuations and massive Marinoan-related deposition of Fe and Mn in the Urucum District, Brazil

Freitas

Rudnitzki

Morais

et al. 2021

Geology

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Global Neoproterozoic glaciations are related to extreme environmental changes and the reprise of iron formation in the rock record. However, the lack of narrow age constraints on Cryogenian successions bearing iron-formation deposits prevents correlation and understanding of these deposits on a global scale. Our new multiproxy data reveal a long Cryogenian record for the Jacadigo Group (Urucum District, Brazil) spanning the Sturtian and Marinoan ice ages. Deposition of the basal sequence of the Urucum Formation was influenced by Sturtian continental glaciation and was followed by a transgressive interglacial record of >600 m of carbonates that terminates in a glacioeustatic unconformity. Overlying this, there are up to 500 m of shale and sandstone interpreted as coeval to global Marinoan glacial advance. Glacial outwash delta deposits at the top of the formation correlate with diamictite-filled paleovalleys and are covered by massive Fe and Mn deposits of the Santa Cruz Formation and local carbonate. This second transgression is related to Marinoan deglaciation. Detrital zircon provenance supports glaciostatic control on Cryogenian sedimentary yield at the margins of the Amazon craton. These findings reveal the sedimentary response to two marked events of glacioeustatic incision and transgression, culminating in massive banded iron deposition during the Marinoan cryochron.

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Zircon U–Pb ages of rocks from the Rio Apa Cratonic Terrane (Mato Grosso do Sul, Brazil): New insights for its connection with the Amazonian Craton in pre-Gondwana times

Cited by 31 publications

References 66 publications

Lithospheric Architecture of the Paranapanema Block and Adjacent Nuclei Using Multiple‐Frequency P‐Wave Seismic Tomography

Lithospheric Architecture of the Paranapanema Block and Adjacent Nuclei Using Multiple‐Frequency P‐Wave Seismic Tomography

The South American retroarc foreland system: The development of the Bauru Basin in the back-bulge province

Cryogenian glaciostatic and eustatic fluctuations and massive Marinoan-related deposition of Fe and Mn in the Urucum District, Brazil

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