Banca de DEFESA: KHALIL BOW LTAIF GARCIA

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : KHALIL BOW LTAIF GARCIA
DATE: 31/03/2026
TIME: 09:00
LOCAL: AUDITÓRIO CCET
TITLE:

GEOMORPHOLOGY OF THE NORTHERN OUTER CONTINENTAL SHELF OF RIO GRANDE DO NORTE AND IMPLICATIONS OF QUATERNARY SEA-LEVEL FLUCTUATIONS

KEY WORDS:

outer shelf; paleoshorelines; reef; sea-level fluctuations; morphostratigraphy

PAGES: 113
BIG AREA: Ciências Exatas e da Terra
AREA: Geociências
SUMMARY:

Sea-level fluctuations are the main drivers of continental shelf evolution, particularly in mixed siliciclastic–carbonate settings where antecedent topography and sediment supply shape depositional patterns. The outer shelf of Rio Grande do Norte, northeastern Brazil, preserves incised valleys, terraces, paleoshorelines, and reefs linked to Quaternary sea-level changes. Using seismic, multibeam, backscatter, and satellite data, we correlate shelf morphology and stratigraphy with its outer evolution, in addition to implementing a new methodology for single-beam data processing. Results show that reefs developed on a Pleistocene basement bounded by a regressive surface of the Last Glacial Maximum and formed as Holocene transgressive buildups. Reefs colonized terraces and paleoshorelines, exhibiting backstepping morphologies associated with Meltwater Pulses. Collectively, the seabed features reveal a recurrent pattern of paleoshoreline generation driven by sea-level rise, incised-valley influence, and carbonate production on a mixed shelf.

COMMITTEE MEMBERS:
Externo ao Programa - 3342435 - ANTONIO RODRIGUES XIMENES NETO - nullExterno à Instituição - ANTÔNIO VICENTE FERREIRA JUNIOR - UFPE
Interna - 2218779 - HELENICE VITAL
Externa ao Programa - 1226434 - MARY LUCIA DA SILVA NOGUEIRA - nullPresidente - 2042405 - MOAB PRAXEDES GOMES
Externa à Instituição - NARELLE MAIA DE ALMEIDA - UFC