Asociaciones de foraminíferos bentónicos cuaternarios de la plataforma del río Maroni (Guayana francesa): contribución paleogeográfica
1997; Issue: 22 Linguagem: Inglês
ISSN
2173-6545
Autores Tópico(s)Geological and Geophysical Studies Worldwide
ResumoThe distribution of benthic foraminiferal microfauna recovered from two cores on the Maroni continental shelf (French Guiana) has been studied. 100 species and two types of foraminiferal assemblages have been identified in the study area. They characterize a record of oceanographic changes from late Quaternary (3000 years B.P) to the present. The assemblage of unit 2 indicates a shelf environment with strong erosion (deeper core KS 33), also an old lagoon with temporary elnoxy events (shallower core KS 34). The modern assemblage (unit 1) shows the rise of sea-Ievel up to modern situation, that implicated the flooding of the lagoon and the reinstauration of the shelf conditions in the studied area.
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