LAGOA SALGADA: AN OVERVIEW OF A BRAZILIAN HYPERSALINE LAGOON ENVIRONMENTAL STUDIES OVER THE LAST 5000 YEARS USING RADIOCARBON DATE CORRECTIONS

IF 2 3区地球科学 Q2 GEOCHEMISTRY & GEOPHYSICS

Radiocarbon Pub Date : 2023-12-14 DOI:10.1017/rdc.2023.83

M I Oliveira, C Carvalho, A Assumpção, K Macario, D Amaral, C F Barbosa, F Oliveira, A Bahniuk, C Vasconcelos, A Cruz, A Blanco

{"title":"LAGOA SALGADA: AN OVERVIEW OF A BRAZILIAN HYPERSALINE LAGOON ENVIRONMENTAL STUDIES OVER THE LAST 5000 YEARS USING RADIOCARBON DATE CORRECTIONS","authors":"M I Oliveira, C Carvalho, A Assumpção, K Macario, D Amaral, C F Barbosa, F Oliveira, A Bahniuk, C Vasconcelos, A Cruz, A Blanco","doi":"10.1017/rdc.2023.83","DOIUrl":null,"url":null,"abstract":"The Lagoa Salgada is located in the Paraíba do Sul river delta plain on the coast of Rio de Janeiro state, Brazil, and is one of the few lagoons in the world that have well-developed recent stromatolites. Lagoa Salgada is a hypersaline lagoon formed in a very complex environmental system subjected to terrestrial and oceanic influences under different sea level regimes and climate variations. In addition, sediment and stromatolites are characterized by unusually positive inorganic δ13C VPDB values. For this reason, it has been the target of several geological and paleoenvironmental studies, which, in their great majority, require a geochronological technique in order to determine the changes in the environment over time. When radiocarbon (14C) dating is used, it is necessary to consider some details as the source of 14C in the environment and perform 14C ages calibration accordingly. In the present paper, a bibliographic survey was carried out in order to review the data treatment and improve the environmental evolution discussion based on accurate calibration. Using the Marine20 curve and an undetermined ΔR, we generated growth and depositional models to establish an overview of the formation of this lagoon.","PeriodicalId":21020,"journal":{"name":"Radiocarbon","volume":"11 1","pages":""},"PeriodicalIF":2.0000,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radiocarbon","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.1017/rdc.2023.83","RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"GEOCHEMISTRY & GEOPHYSICS","Score":null,"Total":0}

引用次数: 0

Abstract

The Lagoa Salgada is located in the Paraíba do Sul river delta plain on the coast of Rio de Janeiro state, Brazil, and is one of the few lagoons in the world that have well-developed recent stromatolites. Lagoa Salgada is a hypersaline lagoon formed in a very complex environmental system subjected to terrestrial and oceanic influences under different sea level regimes and climate variations. In addition, sediment and stromatolites are characterized by unusually positive inorganic δ13C VPDB values. For this reason, it has been the target of several geological and paleoenvironmental studies, which, in their great majority, require a geochronological technique in order to determine the changes in the environment over time. When radiocarbon (14C) dating is used, it is necessary to consider some details as the source of 14C in the environment and perform 14C ages calibration accordingly. In the present paper, a bibliographic survey was carried out in order to review the data treatment and improve the environmental evolution discussion based on accurate calibration. Using the Marine20 curve and an undetermined ΔR, we generated growth and depositional models to establish an overview of the formation of this lagoon.

查看原文本刊更多论文

拉戈阿-萨尔加达：利用放射性碳年代校正对巴西一个高盐度泻湖过去 5000 年的环境研究综述

Lagoa Salgada位于巴西里约热内卢州海岸的Paraíba do Sul河三角洲平原，是世界上为数不多的具有发育良好的近代叠层石的泻湖之一。Salgada Lagoa Salgada是在一个非常复杂的环境系统中形成的一个高盐泻湖，在不同的海平面制度和气候变化下，受到陆地和海洋的影响。此外，沉积物和叠层石具有异常正的无机δ13C VPDB值。由于这个原因，它一直是一些地质和古环境研究的目标，这些研究在大多数情况下都需要地质年代学技术来确定环境随时间的变化。当使用放射性碳(14C)定年时，需要考虑一些细节作为环境中14C的来源，并相应地进行14C年龄校准。本文以文献调查为基础，对数据处理进行综述，以完善基于精确定标的环境演变讨论。利用Marine20曲线和一个未确定的ΔR，我们生成了生长和沉积模型，以建立这个泻湖形成的概述。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Radiocarbon 地学-地球化学与地球物理

CiteScore

16.20

自引率

6.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Radiocarbon serves as the leading international journal for technical and interpretive articles, date lists, and advancements in 14C and other radioisotopes relevant to archaeological, geophysical, oceanographic, and related dating methods. Established in 1959, it has published numerous seminal works and hosts the triennial International Radiocarbon Conference proceedings. The journal also features occasional special issues. Submissions encompass regular articles such as research reports, technical descriptions, and date lists, along with comments, letters to the editor, book reviews, and laboratory lists.