Solos do passado: origem e identificação

Ladeira, Francisco Sérgio Bernardes

doi:10.1590/s0100-06832010000600001

Cited by 8 publications

(3 citation statements)

References 29 publications

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“…After these above‐mentioned procedures were completed, all physiographic data were integrated according to Ab'Saber's (1969) concepts of surface structure analysis of the landscape and the Ladeira (2010) concepts of palaeopedological analysis.…”

Section: Methodsmentioning

confidence: 99%

Early anthropic occupation and geomorphological changes in South America: human–environment interactions and OSL data from the Rincão I site, southeastern Brazil

Cheliz¹,

Giannini

Sousa

et al. 2023

J Quaternary Science

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This article aims to refine the description of the artefacts and the geomorphological, geological, pedological and chronological (optically stimulated luminescence (OSL) analyses of sedimentary deposits) characterisation of the Rincão I site (southeastern Brazil) to contribute to the understanding of early human–environment interactions. The archaeological site occupation took place on hillslopes truncated by the Mogi‐Guaçu River's lateral (~1200 m) and vertical (~5 m) movements during the Late Quaternary, in an area where in situ bedrock outcrops are uncommon. This geological context favoured human groups simultaneously having access to the resources provided by the alluvial plain and hillslopes. Here we describe how about three hundred lithic artefacts are associated with soils that originated from sandy colluvium with OSL ages between 20.3 and 5.5 thousand years. These ages are consistent with the local palaeopedological and geomorphological contexts of landscape changes, and partly controversial from the perspective of models currently in vogue for the human occupation of southeastern Brazil. The vestiges of past human presence amid the hillslope sandy colluvium deposits include: 1) a set of flakes and formal artefacts (one stemmed point and three convex artefacts) made of sandstone obtained from hillslopes near (<10 km) the site; and 2) predominant detritus and flakes of quartz and flint obtained mostly from the adjacent (<1.5 km) alluvial plain, linked to flaking sequences other than those of the formal artefacts. Only quartz artefacts were found in the lower levels of the site stratigraphy, whereas in the intermediate and upper levels quartz, flint and sandstone artefacts were found, suggesting that there were changes in the raw materials used for flaking over time. The formal artefacts from the site have technological attributes like the ones observed in assemblages associated with a previously known lithic industry (Rioclarense), but a different pattern of choice of raw materials. This suggests that technical standards underwent a process of adaptation to the environmental particularities surrounding the Rincão I site.

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Section: Methodsmentioning

confidence: 99%

Early anthropic occupation and geomorphological changes in South America: human–environment interactions and OSL data from the Rincão I site, southeastern Brazil

Cheliz¹,

Giannini

Sousa

et al. 2023

J Quaternary Science

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“…Porém, é importante frisar que nem todo solo soterrado trata-se de um paleossolo. É necessário que este seja resultante de condições ambientais pretéritas diversas das condições reinantes na atualidade (LADEIRA, 2010). De acordo com Pierini e Mizusaki ( 2007) paleossolo (Figura 1 e 2) é um solo formado em condições passadas em superfícies estáveis, o qual não foi erodido devido à cobertura sedimentar mais recente ou permaneceram expostos, mas, sua gênese é dissociada do ambiente atual.…”

Section: Introductionunclassified

Paleossolos brasileiros – o estado da arte

et al. 2021

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Paleossolos são solos formados em paisagens de uma época passada. São importantes registros paleoambientais, pois conservam registros do passado e processos que acarretaram no surgimento das paisagens presentes. Assim sendo, o estudo de solos do passado é importante para a compreensão e entendimento da origem e evolução da paisagem até tempo presente. Neste sentido, este trabalho buscou por meio de uma abordagem cienciométrica verificar o estado da arte sobre paleossolos no Brasil de 1980 a 2017. As publicações sobre paleossolos foram pesquisadas nas seguintes bases de dados: periódicos da CAPES, Google Scholar® e o acesso ao currículo Lattes. A quantificação das publicações foi realizada com base em: i) ano; ii) instituições envolvidas; iii) local de desenvolvimento da pesquisa, com elaboração de mapa; iv) título do periódico. Constatou-se que a maior parte dos das publicações foram desenvolvidos a partir do ano 2000. As áreas pesquisadas estão predominantemente no Sul e Sudeste (85%), bem como as instituições envolvidas 89%).

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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%

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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Solos do passado: origem e identificação

Cited by 8 publications

References 29 publications

Early anthropic occupation and geomorphological changes in South America: human–environment interactions and OSL data from the Rincão I site, southeastern Brazil

Early anthropic occupation and geomorphological changes in South America: human–environment interactions and OSL data from the Rincão I site, southeastern Brazil

Paleossolos brasileiros – o estado da arte

Pedodiagenetic Characterization of Cretaceous Paleosols in Southwest Minas Gerais, Brazil

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