Comparação entre as assinaturas tafonômicas de associações de foraminíferos subfósseis das enseadas do Flamengo e da Fortaleza, São Paulo, Brasil

Abstract

Taphonomic (color alteration, grade and type of fragmentation) and morphometric signatures were analyzed in sub-fossil benthic foraminiferal assemblages along two shallow sedimentary marine cores, UB1 (Saco da Ribeira) and UB3 (Praia do Lázaro), collected at Flamengo and Fortaleza bays, in the Ubatuba municipality, at the northern coast of São Paulo State. The results indicated that these assemblages were not completely changed during their permanence in the geologic record and are therefore able to indicate the paleoenvironmental changes of these shallow marine regions since 7,700 cal years BP. The comparison between the taphonomic aspects of benthic foraminiferal assemblages present along both cores still allowed the assessment of similarities and differences between the depositional sites, thus complementing the paleoenvironmental information already gathered by the characteristics of both assemblages. © 2013 by the Sociedade Brasileira de Paleontologia.