%0 Journal Article
%T Malacological Study of the Momuna (Iguape, Brazil) Shell-middens and their Paleoenvironmental Significance
%A Roberto Barbosa Rodrigues
%A Kenitiro Suguio
%A Aleth¨¦a Ernandes Martins Sallun
%A Luiz Ricardo Lopes de Simone
%J Geologia USP : S¨¦rie Cient¨ªfica
%D 2011
%I Instituto de Geoci¨ºncias da USP
%X The shell-middens present in the Iguape (S o Paulo State) coastal plain are situated at different distances from thepresent shoreline. In general, the more external shell-middens, which show a dominance of Anomalocardia brasilianashells, give younger ages than the more internal shell-middens, which correspond to the Holocene most important lagoonexpansion occurred between 5 and 6 ky B.P., and are commonly composed of Crassostrea brasiliana shells. Moreover,it was observed that the ¦Ä13C(PDB) ratios of the shells change according to the geographic location of the shell-middens, asa function of RSL (Relative Sea-Level) fluctuations with time. In this paper, the malacofauna of the shell-middens of theMomuna 1 and 2, both located at the homonymous village (Iguape, S o Paulo State, Brazil), on the Cananeia Formation(120 ky B.P.), was studied.
%K Shell-middens
%K Lagoon expansion
%K Relative Sea-Level (RSL)
%U http://ppegeo-local.igc.usp.br/pdf/guspsc/v11n1/08.pdf