Voltar
Artigo Acesso aberto Produção Nacional
BIBTEX RIS

PALINOFÁCIES E PROCESSOS DEPOSICIONAIS EM SEDIMENTOS DE FUNDO DA LAGOA DOS QUADROS, PLANÍCIE COSTEIRA DO RIO GRANDE DO SUL, BRASIL

2006; Sociedade Brasileira de Geologia; Volume: 36; Issue: 4 Linguagem: Inglês

10.25249/0375-7536.2006364569576

ISSN

2177-4382

Autores

KARIN ELISE BOHNS MEYER, Paulo A. Souza, Taíssa Rêgo Menezes, Francisco Sekiguchi de Carvalho Buchmann,

Tópico(s)

Geography and Environmental Studies

Resumo

This study is based on the qualitative and quantitative characterization of particulate organic matter (palynomorphs, opaque phytoclasts, non-opaque phytoclasts and amorphous organic matter-AOM) and statistic methods of analysis from bottom sediments of Quadros Lake, of Rio Grande do Sul Coastal Plain. These data provided the identification of five palynofacies, with paleoenvironmental significance. Palynofacies A, with equivalent particulate organic matter among the four groups is associated to processes of gradational suspension; Palynofacies B and C represent fluvial influx control, with percentual differences between the groups; Palynofacies D, predominantly comprised of AOM and opaque phytoclasts is correlated to suspension and traction processes; suspension processes are attributed to Palynofacies E, with AOM and palynomorphs predominance. The results have shown the potential of palynofacies analysis through the interpretation and reconstitution of environments.

Referência(s)