Late Holocene coastal dynamics, climate pulses and low terraces in the coast of the state of Sao Paulo, southeast, Brazil

Autor(es)

Souza, Andre de Oliveira ^[1] ; Perez Filho, Archimedes ^[1]

Afiliação do(s) autor(es)

^[1] State Univ Campinas UNICAMP, Inst Geosci, Dept Geog, BR-13083855 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of South American Earth Sciences; v. 92, p. 234-245, JUN 2019.
• Citações Web of Science: 0

Resumo

The lower Ribeira de Iguape stream - located in Sao Paulo, Brazilian southern coast, exhibits complex geomorphologic characteristics that resulted from multiple processes developed during the late Holocene. The present study proposes discussions about the possible relations between short-term climate events from the late Holocene (Climate Pulses) promoting the coastal dynamics and genesis of different levels of low fluvial-marine and marine terraces located in the study area, a subject rarely considered in other studies in humid tropical regions. The procedure of work included grain-size analyses and optically stimulated luminescence (OSL) dating of sediment samples collected from different depositional packages. Four depositional events resulted from transgressive and regressive events geochronologically related with climate pulses from the late Holocene were identified. The events can be summarized as follows: I) Marine Transgression (similar to 3.5-2.7 ka); II) Marine Regression (2.7-1.8 ka); III) Marine Transgression (1.8-0.65 ka); IV) Marine Regression (0.65-0.10 ka). (AU)

• Processo FAPESP: 16/00382-9 - Geocronologia das Coberturas Superficiais em Baixos Terraços Fluviais, Marinhos e Flúvio-Marinhos na Foz das Bacias do Ribeira de Iguape-SP e do Rio Paraíba do Sul-RJ: Flutuações Climáticas Holocênicas no Sudeste Brasileiro
• Beneficiário: André de Oliveira Souza
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 16/05327-6 - Espacialização e geocronologia das coberturas superficiais em terraços marinhos, fluvio-marinhos e fluviais no contexto das oscilações climáticas, associadas aos episódios de transgressão e regressão marinha holocênicas no litoral brasileiro
• Beneficiário: Archimedes Perez Filho
• Modalidade de apoio: Auxílio à Pesquisa - Regular