Results 1 to 10 of about 400 (153)

Marine influence in the Barreiras Formation, State of Alagoas, northeastern Brazil [PDF]

Anais da Academia Brasileira de Ciências, 2009
Tidal processes were important for deposition of the Barreiras Formation located in northern Brazil, while correlatable deposits in northeastern Brazil have been traditionally related to continental environments.
Dilce F. Rossetti, Ana M. Góes
doaj   +6 more sources

2D stability and flow analysis of a slope in Recife - PE with Barreiras Formation soil in unsaturated conditions [PDF]

MATEC Web of Conferences, 2021
Due to the increase in the number of mass movements on hillslopes during the rainy season in the city of Recife, the importance of analyzing and understanding the unsaturated behavior of the soil is verified.
Fontoura Tahyara, Coutinho Roberto, Morais Bruno   +2 more
doaj   +4 more sources

Association of Post-Barreiras and Barreiras Formation strata and influence on soil genesis, Southern Bahia – Brazil [PDF]

Revista Brasileira de Ciência do Solo, 2020
The term Post-Barreiras is a definition for sediments above the deposits of the Barreiras Formation, and the genesis of soils in these environments must be related to sedimentary deposition.
Cristiano Marcelo Pereira de Souza, Liovando Marciano da Costa, Francis Henrique Tenório Firmino, Carlos César Uchôa de Lima, Ana Maria Souza dos Santos Moreau, Marcos Esdras Leite   +5 more
doaj   +5 more sources

Spodosols pedogenesis under barreiras formation and sandbank environments in the south of Bahia [PDF]

Revista Brasileira De Ciencia Do Solo, 2010
Morphologically differentiated Spodosols usually occur in the Coastal Plain of the South of Bahia and North of Espírito Santo. They are found in profiles known as "muçungas", i.e. sandy soils that accumulate water. In these areas, two kinds of Spodosols, different from those in the Restinga area, can be found: Spodosols with E albic horizon (white ...
Ivo Ribeiro, Mauricio Fontes, João Ker   +2 more
exaly   +5 more sources

Genesis and variation spatial of Podzol in depressions of the Barreiras Formation, northeastern Espírito Santo State, Brazil, and its implications for Quaternary climate change [PDF]

Journal of South American Earth Sciences, 2020
Variations in relief associated with pedogenetic processes promote different intensities in weathering of sediments of the Barreiras Formation and may thus lead to the formation of different soil types, like Podzols, Acrisols and Ferralsols. The Podzols of tropical regions contain important information on climate and vegetation changes that occurred ...
Luiz Carlos Ruiz Pessenda, Marcos Pereira, Marcia Regina Calegari   +2 more
exaly   +2 more sources

Degradation systems of ferruginous duricrust in the Barreiras Formation, Southeastern Brazil

Catena
The Barreiras Formation extends across the South American Atlantic coast and is characterized by alternating layers of sandstones and mudstones that undergo considerable ferruginization, resulting in the formation of iron duricrusts. In the present study, petrographic, micromorphological, microchemical and geochemical analyzes of the duricrusts and ...
Caroline Delpupo Souza, Fabio Oliveira, Angelica Fortes Drummond Chicarino Varajão   +2 more
exaly   +3 more sources

Mineralogy, geochemistry, and palynology of modern and late Tertiary mangrove deposits in the Barreiras Formation of Mosqueiro Island, northeastern Pará state, eastern Amazonia

Journal of South American Earth Sciences, 2004
Abstract A coastal environment has been interpreted from 110 cm thick mudstone deposits found at the base of a 10 m immature laterite profile, which forms the modern coastal cliff on Mosqueiro Island in northeastern Para state, northern Brazil. The late Tertiary sediment deposits of the Barreiras Formation are studied by multi-element geochemistry ...
Marcondes Lima da Costa, Hermann Behling   +1 more
exaly   +3 more sources

Coesão e resistência ao cisalhamento relacionadas a atributos físicos e químicos de um Latossolo Amarelo de tabuleiro costeiro Cohesion and shear strength as related to physical and chemical properties of a Yellow Latosol of coastal plain

Revista Brasileira de Ciência do Solo, 2007
Os solos coesos de tabuleiros costeiros têm como característica peculiar horizontes minerais subsuperficiais, que apresentam consistência friável quando úmidos, porém, quando secos, têm consistência dura, muito dura ou extremamente dura.
Apolino José Nogueira da Silva, Fabíola Gomes de Carvalho   +1 more
doaj   +1 more source

Use of variance analysis (ANOVA) in the distinction of sedimentary aquifers in the Recôncavo Norte Region-Bahia

Revista Águas Subterrâneas, 2016
The purpose of this report is to compare the existence of hydrogeochemical similarity between the Barreiras, Marizal and São Sebastião Formations located in the Recôncavo Norte region of the State of Bahia.
Sérgio Augusto de Morais Nascimento, Luiz Rogério Bastos Leal, Carlos Gleidson Campos da Purificação   +2 more
doaj   +1 more source

Caracterização e gênese do caráter coeso em latossolos amarelos e argissolos dos tabuleiros costeiros do estado de Alagoas Characterization and genesis of cohesive horizons in oxisols and ultisols of the coastal tablelands of Alagoas State, Brazil

Revista Brasileira de Ciência do Solo, 2009
O caráter coeso é um atributo característico de horizontes subsuperficiais de solos que apresentam consistência muito dura a extremamente dura, quando secos, passando a friável ou firme, quando umedecidos.
José de Almeida Lima Neto, Mateus Rosas Ribeiro, Marcelo Metri Corrêa, Valdomiro Severino de Souza Júnior, José Fernando W.F. Lima, Rafael Fernandes de Abreu e Lima Ferreira   +5 more
doaj   +1 more source