气候变化领域集成服务门户(CCPortal): Influence of early/mid-Holocene climate change and sea level rise on a coast with barrier islands, Rio de Janeiro State, SE Brazil

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DOI	10.1007/s43217-024-00170-0
	Influence of early/mid-Holocene climate change and sea level rise on a coast with barrier islands, Rio de Janeiro State, SE Brazil
	Damasceno, Fabricio Leandro; Virginia, Alves Martins Maria; Guerra, Josefa Varela; dos Reis, Antonio Tadeu; Saibro, Murilo Barros; da Silva, Layla Cristine; Seixas, Amanda Pacheco; Farhangi, Vahideh; Chueng, Karina Ferreira; Mane, Miguel Angelo; Figueira, Rubens Cesar Lopes; Geraldes, Mauro
发表日期	2024
ISSN	2662-5571
EISSN	2447-9462
起始页码	9
结束页码	2
卷号	9 期号:2
英文摘要	This work aims to identify the influence of climate change on sedimentary processes associated with the usual regression process during the rise of sea level in the early/middle Holocene in southeastern Brazil. The studied area is on the eastern side of Marambaia Barrier Island, which borders the eastern side of Sepetiba Bay (Rio de Janeiro State, SE Brazil). Nowadays, the Marambaia Barrier Island, a approximate to 40 km long and approximate to 5 km wide sandy ridge, shields Sepetiba Bay from the direct influence of the Atlantic Ocean. To achieve this goal, grain size, geochemical data (including elemental and stable isotopes), and radiocarbon dating data from sediment core SP10 (spanning depths from 8.2 to 45.5 m), collected in the eastern sector of the Marambaia Barrier Island were analyzed. Core SP10 predominantly consists of sandy sediments with some textural variations. However, Sr/Ba ratios suggest that brackish waters primarily influenced the depositional environment, which was also subject to cyclical marine incursions. The essentially felsic sediments of the interval between 45 and 41 m (approximate to 10.0-8.5 ka BP) were probably deposited in a protected tidal plain estuary with mangroves. They were possibly mainly sourced from the nearby Pedra Branca Complex. Subsequently, between approximate to 41 and 11 m, the marine influence and hydrodynamics increased, and the sediments exhibited a more mafic mineralogical composition resulting probably from the erosion of the Rio Negro Complex, which is mainly found in the northern region of Sepetiba Bay. The mafic component likely reached the study area through coastal drift connected with Sepetiba Bay. During the drought period, recorded between similar to 7.5 and 7.0 ka cal BP (section 25-21 m), the contribution of the mafic component from the Rio Negro Complex decreased and less weathered sediments were accumulated. On the other hand, marine incursions into the study area became more prominent. During the drier climate phase recorded in the interval approximate to 11-9 m (after approximate to 4.0 ka BP), the La/Sc values indicate that the sediment included a higher proportion of felsic particles, probably due to more significant restrictions on the connection of the study area with Sepetiba Bay due to the development of the Marambaia Barrier Island. These findings are significant as they demonstrate the influence of geomorphology, climate change, sea level, and the development of Holocene barrier islands on the sedimentation in coastal regions.
英文关键词	Sediment source; Sedimentary environment; Isotopic proxies; Marambaia Barrier Island; Sepetiba Bay
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:001187506100001
来源期刊	JOURNAL OF SEDIMENTARY ENVIRONMENTS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/288981
作者单位	Universidade do Estado do Rio de Janeiro; Universidade de Aveiro; Universidade do Estado do Rio de Janeiro; Universidade Federal Fluminense
推荐引用方式 GB/T 7714	Damasceno, Fabricio Leandro,Virginia, Alves Martins Maria,Guerra, Josefa Varela,et al. Influence of early/mid-Holocene climate change and sea level rise on a coast with barrier islands, Rio de Janeiro State, SE Brazil[J],2024,9(2).
APA	Damasceno, Fabricio Leandro.,Virginia, Alves Martins Maria.,Guerra, Josefa Varela.,dos Reis, Antonio Tadeu.,Saibro, Murilo Barros.,...&Geraldes, Mauro.(2024).Influence of early/mid-Holocene climate change and sea level rise on a coast with barrier islands, Rio de Janeiro State, SE Brazil.JOURNAL OF SEDIMENTARY ENVIRONMENTS,9(2).
MLA	Damasceno, Fabricio Leandro,et al."Influence of early/mid-Holocene climate change and sea level rise on a coast with barrier islands, Rio de Janeiro State, SE Brazil".JOURNAL OF SEDIMENTARY ENVIRONMENTS 9.2(2024).