Title:	Geochemical, granulometric, and dating characterization of anthropic sediment deposits within the shells of the Sambaqui - Fazenda Campos Novos - Cabo Frio - RJ - Brazil.
Authors:	TEIXEIRA, W. G. VALLE, L. G. F. MANSUR, K. L.
Affiliation:	WENCESLAU GERALDES TEIXEIRA, CNPS; LILLYANE G. F. VALLE, UNIVERSIDADE DE SÃO PAULO; KÁTIA L. MANSUR, UNIVERSIDADE FEDERAL DO RIO DE JANEIRO.
Date Issued:	2025
Citation:	Anais da Academia Brasileira de Ciências, v. 97, 2025. Suplemento 4.
Description:	This study characterizes the Fazenda Campos Novos (FCN) Sambaqui, a prehistoric shell mound site in Cabo Frio, Brazil. By analyzing the physical, geochemical, and paleoenvironmental aspects of the sambaqui, we aim to understand the environmental conditions associated with the sediments within the shell midden. Methods employed included sediment grain size analysis, X-ray fluorescence, wet chemical characterization, magnetic susceptibility analysis, and radiocarbon dating to provide chronological context. Granulometric data revealed a predominantly sandy loam texture and high magnetic susceptibility values, indicative of human-induced heating events. Chemical analyses revealed elevated levels of organic matter, phosphorus, strontium, and other elements, suggesting significant anthropic influence and resource utilization by prehistoric inhabitants. The presence of marine shells and sandy sediments indicates a coastal depositional environment. Radiocarbon dating placed the sambaqui’s age between 3230 and 3350 years BP, aligning with other regional archaeological sites. Paleoenvironmental reconstructions suggest that the FCN Sambaqui formed during a Holocene marine transgression. These findings enhance our understanding of the cultural practices, environmental conditions, and human-environment interactions associated with the FCN Sambaqui, providing a valuable record of prehistoric life and informing future research on coastal archaeology and paleoenvironmental studies.
Thesagro:	Estrôncio Fósforo
NAL Thesaurus:	Strontium Phosphorus
Keywords:	Susceptibilidade magnética Sambaqui Shell mound Magnetic susceptibility
DOI:	https://doi.org/10.1590/0001-3765202520241021
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CNPS)