000			03288nab a2200301 i 4500
003			BR-BrBNA
005			20250318160442.0
008			250318b2020 bl.ar|pooa||| 00| 0 eng |
040			_aBR-BrBNA _beng
072			_aP32
072			_aP33
100			_aSouza, Cristiano Marcelo Pereira de
100			_aCosta, Liovando Marciano da
100			_aFirmino, Francis Henrique Tenório
100			_aLima, Carlos César Uchôa de
100			_aMoreau, Ana Maria Souza dos Santos
100			_aLeite, Marcos Esdras
245			_aAssociation of Post-Barreiras and Barreiras Formation strata and influence on soil genesis, Southern Bahia – Brazil
500			_aPublicação on-line; 7 illus; 3 tables; Sumaries (En); Bibliography p. 1 - 16
520			_a ABSTRACT: 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. Our objective was to apply multi-technique analyses to characterize the sediments and soils to understand pedogenesis in these environments. We analysed sedimentological parameters and the geochronology of sediments. Morphological, chemical, and mineralogical analyses allowed the characterization of the soil. Also, these data supported the analysis of lithological discontinuity. We considered the contents of Ti and Zr, uniformity value, the fraction of organic material, morphology, and palynological analysis. The age of Post-Barreiras sediments is from the Pleistocene, and they have a more significant variation of sedimentological parameters concerning Barreiras Formation layers. In general, the soils are sandy, acidic, have a low level of exchangeable cations. Mineralogy has a predominance of quartz and kaolinite minerals. In the region, there are soils with low morphological variation, classified as Quartzipsamments. In other cases, there are soils with apparent spodic morphology, which is conditioned by four aspects: (i) Podzolization in Post-Barreiras sandy sediments without evidence of lithological discontinuity, forming Bs horizon (Spodosols); (ii) contact zones (Post-Barreiras/Barreiras Formation) with physical, chemical, and morphological evidence of discontinuity, forming Quartzipsamments or Ultisols; (iii) layers of the Barreiras Formation buried by Post-Barreiras sediments and the subsequent podzolization process, forming Bhm horizon (Spodosols); and (iv) destruction of Ultisols clay, forming Bs horizon (Spodosols). The sedimentary association (Post-Barreiras/Barreiras Formation) favors the development of different soils. The contact zones generate a morphological aspect similar to the Spodosols, associated or not with podzolization processes. Keywords: Coastal Tablelands, lithological discontinuity, podzolization, Quaternary sediments.
650			_aANÁLISE DO SOLO
650			_aSEDIMENTO
650			_aGÊNESE DO SOLO
773	0		_0808 _9345421 _dViçosa-MG Sociedade Brasileira de Ciência do Solo 1977 _o2024-5955 _tRevista Brasileira de Ciência do Solo (Brazil) _x0100-0683 _gv. 44 p. 1-20; (2020) _wBR2024004910
856			_uhttps://www.scielo.br/j/rbcs/a/HbcDGSRqfrQxW6Nw3hRY8XJ/?format=pdf&lang=en
942			_cANA
999			_c330496 _d330496