Micromorphology Of Paleosols Of The Marília Formation And Their Significance In The Paleoenvironmental Evolution Of The Bauru Basin, Upper Cretaceous, Southeastern Brazil

dc.creatorSilva
dc.creatorMárcio Luiz da; Batezelli
dc.creatorAlessandro; Ladeira
dc.creatorFrancisco Sérgio Bernardes
dc.date2017
dc.date2017-08-30T17:37:04Z
dc.date2017-08-30T17:37:04Z
dc.date.accessioned2018-03-29T05:29:50Z
dc.date.available2018-03-29T05:29:50Z
dc.identifierRevista Brasileira De Ciência Do Solo. Sociedade Brasileira De Ciência Do Solo, v. 41, p.
dc.identifier0100-0683
dc.identifierS0100-06832017000100304
dc.identifierhttp://www.scielo.br/scielo.php?pid=S0100-06832017000100304&script=sci_arttext
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/324685
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1358903
dc.descriptionDeduction of associated paleoenvironments and paleoclimate, definition of the chronosequence of paleosols, and paleogeographic reconstruction have become possible through the application of micromorphology in paleopedology. Micromorphology has also been useful in recognition of weathering processes and definition of minerals formed in succession. In this respect, the objective of this study was to identify the development of pedogenic processes and discuss their significance in the paleoclimate evolution of the Marília Formation (Maastrichtian) of Bauru Basin. Three sections of the Marília Formation (A1, A2, and A3) were described, comprising nine profiles. Micromorphologic al analysis was carried out according to the specialized literature. In the Marília Formation, the paleosols developed in sandstones have argillic (Btkm, Bt) and carbonate (Bk) horizons with different degrees of cementation, forming mainly calcretes. The evolution of pedogenic processes, in light of micromorphological analysis, evidenced three moments or stages for the genesis of paleosols with Bkm, Btk, and Bt horizons, respectively. In the Maastrichtian in the Bauru Basin, the paleosols with Bkm are older and more arid environments, and those with Bt were formed in wetter weather, but not enough to lead to the genesis of enaulic-related distributions, typical of current Oxisols.
dc.description41
dc.languageIngles
dc.publisherSociedade Brasileira de Ciência do Solo
dc.relationRevista Brasileira de Ciência do Solo
dc.rightsaberto
dc.sourceScielo
dc.subjectCalcrete
dc.subjectC/f-related Distribution
dc.subjectB-fabric
dc.subjectPedofeatures
dc.subjectPaleoclimate
dc.titleMicromorphology Of Paleosols Of The Marília Formation And Their Significance In The Paleoenvironmental Evolution Of The Bauru Basin, Upper Cretaceous, Southeastern Brazil
dc.typeArtículos de revistas


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