Banca de QUALIFICAÇÃO: Rilda Verônica Cardoso de Araripe

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : Rilda Verônica Cardoso de Araripe
DATE: 25/05/2022
LOCAL: Remotamente
TITLE:
KEY WORDS:

Marine Ingression; Aptian-Albian; Foraminifera; Ostracods; Nannofossils

PAGES: 105
BIG AREA: Ciências Exatas e da Terra
AREA: Geociências
SUMMARY:

This paper aims to provide new biostratigraphic, paleecological and paleoenvironmental contributions to the Romualdo Formation, Albian-Aptian of the Araripe sedimentary basin, through the integrated analysis of carbonate microfossil data, including ostracods, foraminifera (benthic and planktonic) and calcareous nannofossils. Four outcrops were selected based on the presence of marine invertebrates (echinoderms, gastropods, bivalves, and crustaceans), and four stratigraphic sections were prepared. A total of 103 samples were collected from outcrops located in the central-southern and eastern portions of the basin: PE-01-SA (6m), PE-02-CD (22m), CE-01-SB (50m) and CE-02-SB (30m). Thirty-three species of benthic foraminifera, six species of planktonic foraminifera, an unique and diverse association of marine ostracods and the first occurrence of calcareous nannofossils for the Araripe Basin were identified. The fauna belongs to the Upper Aptian with the occurrence of the ostracode Damonella grandiensis (biozone-O11) and of the planktonic foraminifera Hedbergella aptiana and Pseudoguembelitria sp. (biozone P. rohri). However, in section PE-01-SA the lower Albian is recorded, by the presence of the nannofossil Hayesites albiensis (biozone CC8). The different associations found reflect a transitional to shallow marine paleoenvironment, gradually developed during the establishment of the sea in the Araripe Basin. The qualification is presented in the form of two papers: Upper Aptian-Lower Albian of The Southern-Central Araripe Basin, Brazil: Microbiostratigraphic And Paleoecological Inferences published the Journal of South American Earth Science and Upper Aptian-Albian Foraminiferal assemblages from the Romualdo formation, Araripe Basin, Brazil: Taxonomy And Paleoenvironmental Inferences in submission to the Anuário do Instituto de Geociências.

BANKING MEMBERS:
Presidente - 1243781 - ALCINA MAGNOLIA DA SILVA FRANCA
Externa à Instituição - MARIA INÊS FEIJÓ RAMOS
Interno - 1133908 - MARIO FERREIRA DE LIMA FILHO