Stratigraphic control and chronology of peat bog deposition in the Serra do Espinhaço Meridional, Brazil

Campos, José Ricardo da Rocha; Silva, Alexandre Christófaro; Slater, Lee; Nanni, Marcos Rafael; Vidal‐Torrado, Pablo

doi:10.1016/j.catena.2016.04.009

Cited by 15 publications

(12 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…5). These peat bogs may have been buried by deeper erosive processes occurring during periods marked by drier weather, as observed by Horak-Terra et al (2014) in the peat bog of Pau-de-Fruta (SdEM), and by Campos et al (2016) in the peat bog of Serra da Doida (SdEM).…”

Section: Peat Bog Formation Environmentsmentioning

confidence: 99%

Influence of the structural framework on peat bog distribution in the tropical highlands of Minas Gerais, Brazil

Campos

Silva

Nanni

et al. 2017

CATENA

Self Cite

View full text Add to dashboard Cite

Peat bogs are ecosystems characterized by high levels of organic matter (OM), which accumulates in environments of low biological activity. The peat bogs present in the tropical highlands of Serra do Espinhaço Meridional (SdEM), Brazil, are associated with hydromorphic environments formed under specific conditions and the strong influence of the quartzite basement, whereby a complex pattern of faults, fractures and folds has deeply affected the drainage network and geomorphological framework. This study investigated the influence of the structural framework on the distribution and morphology of these ecosystems within a hydrological and geomorphological context. The physical features of the landscape were analyzed using geological maps, a digital elevation model and by mapping the main geomorphological feature patterns obtained from geographic information systems (GIS). Ground Penetrating Radar transects were taken in representative areas, as the best strategy for detection of buried peat bogs, as well as to analyze bedrock configuration and infer its relationship with water flow. Four peat bog typologies were identified: "entrenched bogs", "subsurface bogs", "structural bogs", and "hanging bogs". The distribution and morphology of these typologies display a strong relationship either with alluvial sediments and floodplains or with structural/lithological features which caused water retention.

show abstract

Section: Peat Bog Formation Environmentsmentioning

confidence: 99%

Influence of the structural framework on peat bog distribution in the tropical highlands of Minas Gerais, Brazil

Campos

Silva

Nanni

et al. 2017

CATENA

Self Cite

View full text Add to dashboard Cite

show abstract

“…In Italy, Rossi et al (2015) used GPR to analyze the water percolation process on soil. Campos et al (2016) used this technique to analyze groundwater depth and the influence of geological structure on water flow. Several studies have been developed to analyze soil compaction, map shallow soils, and prevent damage during its implementation (Ciampalini et al, 2015;Campos et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Campos et al (2016) used this technique to analyze groundwater depth and the influence of geological structure on water flow. Several studies have been developed to analyze soil compaction, map shallow soils, and prevent damage during its implementation (Ciampalini et al, 2015;Campos et al, 2016). In addition, this equipment has been used to monitor moisture content and water infiltration in irrigated fields (Rossi et al, 2015;Tran et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Use of Ground Penetrating Radar to Study Spatial Variability and Soil Stratigraphy

Campos

Vidal‐Torrado²,

Modolo

2019

Eng. Agríc.

Self Cite

View full text Add to dashboard Cite

Ground Penetrating Radar (GPR) is a geophysical method that uses electromagnetic waves to study subsurface structure in different fields such as geology, agriculture and civil engineering. The wave penetration in the soil is strongly controlled by the electrical conductivity of soil components such as clay, organic matter, and water. In this study, tests were conducted in a floodplain in the Elizabeth Creek watershed (New Jersey-USA). We established one transect where measurements were completed using two techniques, common mid point (CMP) and constant offset profile (COP), both with 100-MHz frequency antennas. Measurements were also completed using 250 and 500 MHz shielded antennas. GPR showed good accuracy to study soil spatial variability and stratigraphy. Antennas of a higher frequency had less vertical investigation capacity and greater accuracy. In this study, it was not possible to clearly differentiate signals from organic matter and clay; this was the main limitation of the GPR system.

show abstract

“…T urfeiras são produtos da lenta decomposição de vegetais em ambientes saturados com água. São ecossistemas particulares por acumularem grandes volumes de água e matéria orgânica e atuam como registros cronológicos de mudanças paleoambientais nas escalas local, regional e global (SILVA et al, 2009a;SCHELLEKENS et al, 2014;BISPO et al, 2015;CAMPOS et al, 2016). Além disso, esses ecossistemas são sensíveis às alterações climáticas e vulneráveis a perturbações antrópicas.…”

Section: Introductionunclassified

“…No município de Datas/MG as turfeiras ocorrem, preferencialmente, em depressões topográficas locais, cuja hidromorfia favorece o acúmulo de material orgânico. Nestes ambientes geralmente ocorrem rochas mais susceptíveis ao intemperismo (Filitos ou rochas básicas), confinadas entre quartzitos (CAMPOS et al, 2016). O mapeamento das turfeiras é um pressuposto elementar para a realização de estimativas do estoque de carbono e de água nestes ecossistemas.…”

Section: Introductionunclassified

Identificação de usos da terra no entorno de turfeiras em Datas/Minas Gerais

Fonseca

Silva

Senna

2018

REGEP

Self Cite

View full text Add to dashboard Cite

O objetivo deste trabalho foi mapear de forma cronológica (1964 – 2014), áreas do entorno de três turfeiras situadas em Datas/MG, visando identificar pressão antrópica, oriunda do uso e ocupação da terra nessas áreas. Para tanto foram utilizadas técnicas de geoprocessamento, tais como georreferenciamento, mosaicagem, classificação supervisionada (MaxVer) e vetorização. Utilizou-se produtos do sensoriamento remoto como fotografias aéreas e imagens dos satélites Landsat (TM/5 e OLI/8) e RapidEye. Os resultados possibilitaram a identificação dos tipos de uso da terra (eucalipto e outras culturas) no entorno das turfeiras situadas no município estudado. A área ocupada com eucaliptocultura, que era inexistente em 1964, ocupou 45,56 ha em 1995 e avançou para 146,16 ha em 2014 (6,14% da área analisada). Outras culturas (morango e milho), também não cultivadas na área em 1964, avançaram para 292,58 ha, em 2014 (12,29% da área estudada). O avanço da agricultura em torno de turfeiras do município de Datas/MG comprova o aumento da pressão antrópica sobre estes ecossistemas, que prestam relevantes serviços ambientais.

show abstract

Stratigraphic control and chronology of peat bog deposition in the Serra do Espinhaço Meridional, Brazil

Cited by 15 publications

References 25 publications

Influence of the structural framework on peat bog distribution in the tropical highlands of Minas Gerais, Brazil

Influence of the structural framework on peat bog distribution in the tropical highlands of Minas Gerais, Brazil

Use of Ground Penetrating Radar to Study Spatial Variability and Soil Stratigraphy

Identificação de usos da terra no entorno de turfeiras em Datas/Minas Gerais

Contact Info

Product

Resources

About