Stratigraphic framework and evolution of the Cretaceous continental sequences of the Bauru, Sanfranciscana, and Parecis basins, Brazil

Batezelli, Alessandro; Ladeira, Francisco Sérgio Bernardes

doi:10.1016/j.jsames.2015.11.005

Cited by 70 publications

(48 citation statements)

References 31 publications

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“…The Bauru Basin is one of the most documented and best studied sedimentary basins in Brazil, with available data including descriptions of more than 500 outcrops (350 outcrops described by Fernandes, , and 150 outcrops described in Batezelli, ) and 1269 well logs (180 well logs presented in Paulae Silva et al ., ; 140 well logs in Batezelli, ; 135 well logs in Batezelli, ; and 814 well logs in Batezelli & Ladeira, ) (Fig. ).…”

Section: Introductionmentioning

confidence: 99%

“…The Caiuá Group comprises the Goio Erê, Rio Paraná and Santo Anastácio formations and was deposited by aeolian processes in the Early Cretaceous. The Bauru Group is a record of a Late Cretaceous distributive fluvial system and is constituted by the Araçatuba, Adamantina, Uberaba and Marília formations (Batezelli & Ladeira, ). The most striking features of the Bauru Group are the many palaeosol profiles associated with the fluvial deposits.…”

Section: Introductionmentioning

confidence: 99%

“…() and Fernandes & Coimbra (); as a braided, river‐dominated alluvial system by Batezelli (, ) and Batezelli et al . (); as a megafan system by Batezelli (); and as a distributive fluvial system by Batezelli & Ladeira () and Soares et al ., .…”

Section: Introductionmentioning

confidence: 99%

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Facies and palaeosol analysis in a progradational distributive fluvial system from the Campanian–Maastrichtian Bauru Group, Brazil

et al. 2018

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The Upper Cretaceous Bauru Group in south‐east Brazil consists of alluvial strata whose characteristics and distribution indicate a fluvial system developed in a semi‐arid to arid climate. Sections exposed within a 90 000 km2 study area in Minas Gerais State (in south‐eastern Brazil) were evaluated using facies and palaeosol analysis to formulate depositional and pedogenic models that may account for geomorphic and climate features. From east to west, the study succession records a gradual decrease in grain size, an increase in the width/thickness ratio in channels, a decrease in the lateral and vertical connectivity of channel deposits, and an increase in overbank deposits. The fluvial architecture indicates a braided channel belt, ephemeral ribbon–channels, and an unconfined fluvial facies from east to west in the study area. The lateral and vertical distribution of facies, stratigraphic architecture and palaeocurrent data suggest proximal, medial and distal portions of a progradational distributive fluvial system. The sedimentary dynamics were marked by the building and abandonment of channels related to processes of aggradation, vegetation growth and palaeosol generation. Macromorphological and micromorphological analyses have identified pedological and mineralogical features that indicate an arid to semi‐arid climate with a provenance from the north‐eastern part of the basin (Alto Paranaiba Uplift). From the proximal to the distal portions of the distributive fluvial system, the palaeosol development is different. In the proximal portion, the palaeosols are absent or poorly developed, allowing a possible general comparison with the present soil order: Inceptisols and Aridisols. In the medial portion of the fluvial system, the palaeosols are well‐developed and characterized by Bt, Btk, C and Ck horizons (Alfisols, Aridisols, Inceptisols and Entisols). Poorly drained to well‐drained palaeosols from the base to the top in the distal plain (Aridisols and Inceptisols) are associated with geomorphic and hydromorphic changes in the fluvial system due to progradational evolution. The genetic relationship between the fluvial architecture and the palaeosols enhances the understanding that the sedimentation and pedogenesis that occurs in different portions of the distributive fluvial system are related to the tectonic and climatic evolution of the basin.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Facies and palaeosol analysis in a progradational distributive fluvial system from the Campanian–Maastrichtian Bauru Group, Brazil

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“…There have been an increasing number of papers on paleosols in Brazil in recent years (Dal'Bó and Ladeira, 2006;Fernandes, 2010;Ladeira, 2010;Batezelli and Ladeira, 2016). However, the role of diagenesis in preserving and altering paleosols has not received proper attention, which hinders dialogue between soil scientists, paleosol scientists, and sedimentologists.…”

Section: Introductionmentioning

confidence: 99%

“…Most effort has been directed to understanding paleosol evolution in different climatic, tectonic, and stratigraphic contexts (McCarthy and Plint, 1998;Kraus, 1999;Retallack, 2001;Alonso-Zarza, 2003;Alonso-Zarza and Wright, 2010;Driese and Nordt, 2013;Batezelli and Ladeira, 2016). Few studies are devoted to the diagenetic processes that paleosols underwent (Retallack and Wright, 1990;Retallack, 1991;Pimentel, 2002;Alonso-Zarza, 2003;Srivastava and Sauer, 2014;Silva et al, 2017), mainly in order to understand the relations between development of the soil and its degree of preservation, leaving a gap concerning the overlapping of diagenetic processes under strict soil features.…”

Section: Introductionmentioning

confidence: 99%

Pedodiagenetic Characterization of Cretaceous Paleosols in Southwest Minas Gerais, Brazil

Nascimento

Ladeira

Batezelli

2017

Rev. Bras. Ciênc. Solo

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ABSTRACT:The influence of post-burial geological processes on preserving pedogenic properties has great importance in identifying ancient paleosols both in the field and in a laboratory. However there are not many publications that focus on characterizing paleosol diagenesis. As temperature and pressure progressively increase, evidence of pedogenesis is modified and destroyed, hindering paleoenvironment characterization and interpretation. This paper discusses diagenetic evidence and its relation to strictly pedogenic features, like structure, cements, nodules, and neoformation of clay minerals using the carbonate paleosols of the Marília Formation in the upper unit of the Bauru Basin as a case study. Despite the long geotectonic and thermal history of the Marília Fomation, paleosols bring us pedogenic evidence that can undergo micromorphological analyses, such as cementation, clay illuviation, bioturbation, and ped structures. The results of analyses in 25 paleopedogenic horizons indicate that the paleotopographic features were responsible for distribution of the diagenetic processes and preservation of the paleosol properties. The maturity of those paleosols controls lithification. In mature paleosols that developed in more stable portions of the landscape, characteristics such as carbonate cementation and development of pedogenic structures are the main factors that inhibit diagenesis. However diagenetic processes that influence poorly-developed paleosols are controlled by depositional characteristics and by changes in the water table, enabling more advanced diagenetic processes, compared to mature paleosols.

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Soils, Chemical Weathering, and Climate Change in Earth History

Driese

Nordt

Stinchcomb

2021

Hydrogeology, Chemical Weathering, and Soil Formation

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Stratigraphic framework and evolution of the Cretaceous continental sequences of the Bauru, Sanfranciscana, and Parecis basins, Brazil

Cited by 70 publications

References 31 publications

Facies and palaeosol analysis in a progradational distributive fluvial system from the Campanian–Maastrichtian Bauru Group, Brazil

Facies and palaeosol analysis in a progradational distributive fluvial system from the Campanian–Maastrichtian Bauru Group, Brazil

Pedodiagenetic Characterization of Cretaceous Paleosols in Southwest Minas Gerais, Brazil

Soils, Chemical Weathering, and Climate Change in Earth History

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