Antropossolos em sítios arqueológicos de ambiente cárstico no norte de Minas Gerais

Vasconcelos, Bruno Gomes; Ker, João Carlos; Schaefer, Carlos Ernesto Gonçalves Reynaud; Poirier, André Pierre Prous; Andrade, Felipe Vaz

doi:10.1590/s0100-06832013000400016

Cited by 10 publications

(10 citation statements)

References 6 publications

(6 reference statements)

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“…Similar soil textures have been observed in soils in limestone shelters in northern Minas Gerais by Vasconcelos et al. () and in the Lagoa Santa region (Araújo et al., ; Araújo, Neves, & Kipnis, ; Silva, ; Sousa, Ker, Prous, Schaefer, & Teixeira, ).…”

Section: Resultssupporting

confidence: 81%

“…In Brazil, pedoarchaeological studies of rockshelters have been performed almost exclusively in limestone or shell‐mound environments (Araújo, Feathers, Arroyo‐Kalin, & Tizuka, ; Araújo, Strauss, Feathers, Paisani, & Schrage, ; Bitencourt, ; Corrêa et al., ; Felice, ; Schmitz, Bitencourt, & Rosa, ; Silva, ; Tudela, ; Vasconcelos, Ker, Schaefer, Poirier, & Andrade, ; Villagran, Strauss, Miller, Ligouis, & Oliveira, ), with the only reference to quartzite environments being Sousa, Ker, Rodet, Schaefer, and Teixeira (). Limestone and quartzite environments differ considerably in terms of geochemistry, mineralogy, and textures, potentially leading to different dynamic transformations, including post‐occupation pedogenesis in archaeological layers.…”

Section: Introductionmentioning

confidence: 99%

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Archaeoanthrosol formation and evolution of the “Santana do Riacho” archaeological shelter: An old burial site in South America

et al. 2017

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The “Santana do Riacho” shelter is one of the oldest human occupation sites in Brazil. Dated to the Late Pleistocene, this shelter contains over 40 buried individuals. The shelter is located on the edge of the Espinhaço Range in Mesoproterozoic quartzites. This study aims to investigate the relationship between human activities and in situ soil formation. To this end, chemical, physical, X‐ray fluorescence, X‐ray diffraction using synchrotron light, micromorphology, and scanning electron microscope with energy‐dispersive X‐ray spectroscopy analyses were performed. In situ anthropogenic practices, such as fires and burials, have had the greatest influence on the geochemical parameters. Pedological processes were clearly detected, including (1) the formation of secondary carbonates; (2) the formation of secondary phosphates; (3) the formation of magnetic Fe nodules, and (4) degradation of magnetite into maghemite. The mobility of P, Ca, and C resulted in the enrichment of these elements in layers stratigraphically considered “sterile.” The amounts of available P, K, Ca, total organic carbon, and the pH values can be considered indicators of human occupation. This study provides information on the pedological processes in rockshelters and represents one of the few pedological and geochemical studies on deposits in a tropical rockshelter in quartzite bedrock.

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Section: Resultssupporting

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Archaeoanthrosol formation and evolution of the “Santana do Riacho” archaeological shelter: An old burial site in South America

et al. 2017

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“…Unlike the present study, Marques et al (2014) (Table 4), and pH values were high. A similar pattern was observed in a study on Paleosols in karstic environments of the Bambuí Group (Vasconcelos et al, 2013). Phosphorus contents were low in all the profiles, as also observed in Lagoa Santa Carste (Shinzato, 1998) and Serra da Bodoquena .…”

Section: Physical and Chemical Propertiessupporting

confidence: 87%

“…In fact, quartz is dominant in the sand fraction of a significant part of Brazilian soils (Shinzato, 1998;Miranda and Ferreira, 1999;Alencar, 2002;Anjos et al, 2007;Vasconcelos et al, 2013). The mineralogy of the sand fraction was uniform, with a variation in crystallinity.…”

Section: Mineralogy Of Sand and Clay Fractionsmentioning

confidence: 99%

Genesis and Classification of Soils Containing Carbonates in a Toposequence of the Bambuí Group

Maranhão

Pereira

Collier

et al. 2016

Rev. Bras. Ciênc. Solo

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ABSTRACT:The Bambuí Group, formed from siliciclastic sediments deposited on an extensive epicontinental platform at the end of the Neoproterozoic era, is characterized by limestones with fine to very fine texture. Limestone-derived soils in the southeast of Tocantins state, Brazil, are less notorious than similar soils in other regions of Brazil and their characterization could contribute to the Brazilian System for Soil Classification (SiBCS). Given that little is known of these soils, despitetheir agricultural potential, the objective of this study was to characterize their properties and the processes leading to soil of genesis, and also contribute to developing the Brazilian System of Soil Classification (SiBCS). Soils profiles were located on the summit (P1), shoulder (P2), backslope (P3), and footslope (P4) of a toposequence in the municipality of Lavandeira, Tocantins. Morphological, physical, chemical, and mineralogical properties of the profiles were determined. The soils were classified as: P1 -Chernossolo Rêndzico Lítico típico (Lithic Haplustolls); P2 -Cambissolo Háplico Ta Eutrófico léptico hipocarbonático (Lithic Haplustolls); P3 -Cambissolo Háplico Carbonático léptico (Lithic Haplustepts); and P4 -Luvissolo Háplico Órtico típico (Typic Rhodustalfs). All the profiles showed high contents of silt, calcium, and magnesium, which resulted in high pH and low exchangeable aluminum content. Base saturation and calcium carbonate equivalent contents were also high, and the horizons showed dark colors due to high organic matter content, which contained humin as the dominant fraction. Mineralogical analysis of the clay fraction indicated predominance of hydroxy-interlayered vermiculite, followed by illite, kaolinite, and quartz, whereas the sand fraction exhibited reflections characteristic of the quartz mineral. Given P4 contents of calcium carbonate equivalent above 50 g kg -1 and the relevance of this feature for agriculture, we propose the inclusion of hypocarbonate as a criterion for classification of Luvissolos Háplicos Órticos at the subgroup level.

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“…In the T1P1 and T1P2 profiles, the major minerals in the clay fraction are kaolinite and illite (Table 2), which result from mica alteration from limestones (Vasconcelos et al, 2013). The mineralogical species and alteration pathways identified in T1P1 and T1P2 agree with several studies on soils formed from carbonate rocks (Oliveira et al, 1998;Shinzato, 1998;Mota et al, 2007;Pereira et al, 2013).…”

Section: Soils Developed From Limestonessupporting

confidence: 83%

Mineralogy and Concentration of Potentially Toxic Elements in Soils of the São Francisco Sedimentary Basin

Ferreira

Coelho

Valladares

et al. 2018

Rev. Bras. Ciênc. Solo

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Lithological and geomorphological variations determine formation of soils with different mineralogical constitutions and can influence the distribution of potentially toxic elements (PTE). The aim of this study was to determine the contents of PTE and mineralogical assemblages along soil profiles of different classes and parent materials and to investigate the association among these factors in the São Francisco sedimentary basin in the northern part of the state of Minas Gerais (Brazil). Eight soil pedons of different classes that developed from different parent materials (limestone, siltstone, phyllite, alluvial-colluvial sediments, detrital cover, and rhythmite) were studied in two lithotoposequences. Soil morphological, particle-size, and chemical analyses were carried out for soil characterization and classification. A mineralogical investigation was carried out by X-ray diffraction on soil sand, silt, and clay fractions. Potentially toxic elements were extracted by microwave-assisted acid digestion (EPA 3015A method) and determined in an ICP-OES. Soil mineralogy showed relevant interactions between pedogenesis and morphogenesis. Quartz is the main mineral in the sand and silt fractions, with varying amounts of weatherable primary minerals, whereas kaolinite is the main mineral in the clay fraction, followed by 2:1 clay minerals and oxides. The main soil properties associated with PTE variability were pH, redox environment, mineral and organic reactive surfaces, and clay content. The unique patterns of PTE distribution per pedon and differences in PTE contents in soils from the same parent material, but with different pedogenic evolution, showed that pedogenic processes influence PTE distribution. Mainly Mn, Ni, Pb, and Ba were influenced by parent material, especially limestone, siltstone, and detrital cover, but Cd, As, and Cu were also influenced. To a lesser extent, Mo was influenced by phyllite and Cr by detrital cover and phyllite. Rhodic Ferralsol (Latossolo Vermelho Distrófico típico) was the only taxonomic class to show class association with PTE. The association of Ferralsols (Latossolos) with Cd, Mn, Ni, Pb, Ba, As, and Cu and the low contents of these elements in soils of this class suggest that pedogenic processes common to Ferralsol (Latossolo) evolution are responsible for decreasing levels of these PTE.

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Antropossolos em sítios arqueológicos de ambiente cárstico no norte de Minas Gerais

Cited by 10 publications

References 6 publications

Archaeoanthrosol formation and evolution of the “Santana do Riacho” archaeological shelter: An old burial site in South America

Archaeoanthrosol formation and evolution of the “Santana do Riacho” archaeological shelter: An old burial site in South America

Genesis and Classification of Soils Containing Carbonates in a Toposequence of the Bambuí Group

Mineralogy and Concentration of Potentially Toxic Elements in Soils of the São Francisco Sedimentary Basin

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