Banca de DEFESA: JÉSSICA BRUNHILDE LIRA RIOS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : JÉSSICA BRUNHILDE LIRA RIOS
DATA : 04/12/2020
HORA: 15:30
LOCAL: https://conferenciaweb.rnp.br/events/defesa-msc-jessica-rios-ppggeologia
TÍTULO:

TAXONOMY OF OSTRACODES AND PALAEOENVIRONMENTAL OF ITAPARICA FORMATION (LOWER CRETACEOUS), IN RECÔNCAVO BASIN, BAHIA, BRAZIL

PALAVRAS-CHAVES:

Micropaleontology. Taxonomy. Ostracods. Cretaceous. Recôncavo Basin.

PÁGINAS: 64
GRANDE ÁREA: Ciências Exatas e da Terra
ÁREA: Geociências
SUBÁREA: Geologia
ESPECIALIDADE: Paleontologia Estratigráfica
RESUMO:

Ostracods are present in all aquatic environments, in a large scale of time and space, from shallow lakes to
abyssal areas. Geographically and temporally present, with a carbonate carapace structure resistant to
fossilization processes and the existence of many post-Paleozoic families today, ostracods are important
bioindicators. The lower Cretaceous (Berriasian/ Rio da Serra Stage), marked by more intense tectonism and
humid climate, favored the installation of lakes with small river incursions such as Lake Itaparica (Itaparica
Formation), replaced by a fluvial-aeolian system (Formation Grande Water). The studies and scientific
publications of Itaparica Formation’s bioestratigraphy are rare, making it difficult to deepen the characterization
of the formation as well as its evolution. The study of the ostracods of the Itaparica Formation of the Recôncavo
Basin allowed the identification of four genera and seven different species of ostercods: Kegelina kegeli,
Kegelina bisculpturata, Kegelina armata, Kegelina depressa; Praecypridea acuta, Cypridea brevicornis,
Theriosynoecum fittoni, included in the biozone RT-002.2 of the Rio da Serra Stage. Five of these species have
been updated to their most recent reclassifications in relation to their original publications, from the genus
Cypridea to Kegelina and Cypridea to Praecypridea. The species of Theriosynoecum present in the formation,
previously understood as two distinct species, are understood in this work, as a variation of its ornamentation in
the carapace of Theriosynoecum fittoni. According to the lithological analysis of the drilling profiles, the
Itaparica formation is composed of siltstones, shales, sandstones and carbonates interspersed in a varied way
throughout the entire basin, presenting a greater siliciclastic contribution in the northeast region of the basin
interpreted as by river input. The present project has a partnership with the company Petróleo Brasileiro S.A. -
Petrobras, via ANP (National Petroleum Agency), providing technical support materials, availability of physical
space and participation of the project co-supervisor, mediator of the development of the study.

MEMBROS DA BANCA:
Presidente - 1212266 - RICARDO PIAZZA MEIRELES
Externo(a) ao Programa - 2529336 - SIMONE SOUZA DE MORAES
Externo(a) à Instituição - ENELISE KATIA PIOVESAN - UFPE