Age of the Post-rift Sequence I from the Araripe Basin, Lower Cretaceous, NE Brazil: implications for spatio-temporal correlation

IF 0.7 4区 地球科学 Q4 PALEONTOLOGY Revista Brasileira De Paleontologia Pub Date : 2021-01-30 DOI:10.4072/RBP.2021.1.03
J. Coimbra, Tiago Freire
{"title":"Age of the Post-rift Sequence I from the Araripe Basin, Lower Cretaceous, NE Brazil: implications for spatio-temporal correlation","authors":"J. Coimbra, Tiago Freire","doi":"10.4072/RBP.2021.1.03","DOIUrl":null,"url":null,"abstract":"A robust biostratigraphic zonation based on microfossils supports the stratigraphic framework and correlation of the interior basins of the Lower Cretaceous of NE Brazil. This zonation has also allowed correlations with coeval sections in the Brazilian marginal basins and in the Gabon and Congo basins (central-west Africa). These records, consisting mainly of non-marine sediments, were a great challenge with regard to the correlation with the International Chronostratigraphic Chart. Therefore, local stages were used, the most recent being the Alagoas local Brazilian Stage, with which the Post-rift Sequence I of the Araripe Basin is related. Regarding lithostratigraphy, this sequence includes the Rio da Batateira (Barbalha for some authors) and Santana formations, the last one with the famous Crato, Ipubi, and Romualdo members, from the base to the top. Although currently there is a consensus on the age of the Alagoas local Brazilian Stage in the Araripe Basin, recently a new age for at least part of the Post-rift Sequence I was proposed. This new proposal, based on isotopic analysis of Re-Os, arose as a panacea to correlate the Rio da Batateira Formation and the Crato and Ipubi members with the international stages. Surprisingly, their authors, although on the one hand, they seem to underestimate biostratigraphic results, on the other they seek to support their proposal from microfossils studied by previous authors, but they do so in an inappropriate way, leading readers to misinterpret their results. Therefore, this paper presents a critical review on the age of the Alagoas local Brazilian Stage in the Araripe Basin and nearby basins, refuting a Barremian age for part of the Post-rift Sequence I.\nKeywords: Alagoas local Brazilian Stage, biostratigraphy, ostracods, palynomorphs, radiometric ages.\nRESUMO – Um robusto zoneamento bioestratigrafico baseado em microfosseis suporta o arcabouco estratigrafico e a correlacao dos estratos eocretaceos das bacias interiores do NE do Brasil. Esse zoneamento permite tambem correlacoes com secoes coevas nas bacias marginais brasileiras e nas bacias do Gabao e Congo (centro-oeste da Africa). Tais registros, compostos principalmente por sedimentos nao-marinhos, foram um grande desafio em termos de correlacao com a Tabela Cronoestratigrafica Internacional. Assim, foram empregados andares locais, sendo o estratigraficamente mais alto o Andar Alagoas, com o qual a Sequencia Pos-rifte I da Bacia do Araripe esta relacionada. Quanto a litoestratigrafia, essa sequencia inclui as formacoes Rio da Batateira (Barbalha para alguns autores) e Santana, a qual esta subdividida nos famosos membros Crato, Ipubi e Romualdo, da base para o topo. Embora atualmente haja consenso sobre a idade do Andar Alagoas naBacia do Araripe, recentemente foi proposta uma nova idade para parte da Sequencia Pos-rifte I. Essa nova proposta, baseada em analises isotopicas de Re-Os, foi apresentada como uma panaceia para correlacionar a formacao Rio da Batateira e os membros Crato e Ipubi com os andares internacionais. Surpreendentemente, seus autores, embora por um lado parecam desmerecer resultados bioestratigraficos, por outro buscam embasar sua proposta em microfosseis estudados por outros autores, mas o fazem de forma desacertada, levando os leitores a interpretarem equivocadamente seus resultados. Portanto, esse artigo apresenta uma revisao critica da idade do Andar Alagoas na Bacia do Araripe e bacias proximas, refutando uma idade barremiana para parte da Sequencia Pos-rifte I.\nPalavras-chave: Andar Alagoas, bioestratigrafia, ostracodes, palinomorfos, idades radiometricas.","PeriodicalId":49616,"journal":{"name":"Revista Brasileira De Paleontologia","volume":"24 1","pages":"37-46"},"PeriodicalIF":0.7000,"publicationDate":"2021-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"14","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Revista Brasileira De Paleontologia","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.4072/RBP.2021.1.03","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PALEONTOLOGY","Score":null,"Total":0}
引用次数: 14

Abstract

A robust biostratigraphic zonation based on microfossils supports the stratigraphic framework and correlation of the interior basins of the Lower Cretaceous of NE Brazil. This zonation has also allowed correlations with coeval sections in the Brazilian marginal basins and in the Gabon and Congo basins (central-west Africa). These records, consisting mainly of non-marine sediments, were a great challenge with regard to the correlation with the International Chronostratigraphic Chart. Therefore, local stages were used, the most recent being the Alagoas local Brazilian Stage, with which the Post-rift Sequence I of the Araripe Basin is related. Regarding lithostratigraphy, this sequence includes the Rio da Batateira (Barbalha for some authors) and Santana formations, the last one with the famous Crato, Ipubi, and Romualdo members, from the base to the top. Although currently there is a consensus on the age of the Alagoas local Brazilian Stage in the Araripe Basin, recently a new age for at least part of the Post-rift Sequence I was proposed. This new proposal, based on isotopic analysis of Re-Os, arose as a panacea to correlate the Rio da Batateira Formation and the Crato and Ipubi members with the international stages. Surprisingly, their authors, although on the one hand, they seem to underestimate biostratigraphic results, on the other they seek to support their proposal from microfossils studied by previous authors, but they do so in an inappropriate way, leading readers to misinterpret their results. Therefore, this paper presents a critical review on the age of the Alagoas local Brazilian Stage in the Araripe Basin and nearby basins, refuting a Barremian age for part of the Post-rift Sequence I. Keywords: Alagoas local Brazilian Stage, biostratigraphy, ostracods, palynomorphs, radiometric ages. RESUMO – Um robusto zoneamento bioestratigrafico baseado em microfosseis suporta o arcabouco estratigrafico e a correlacao dos estratos eocretaceos das bacias interiores do NE do Brasil. Esse zoneamento permite tambem correlacoes com secoes coevas nas bacias marginais brasileiras e nas bacias do Gabao e Congo (centro-oeste da Africa). Tais registros, compostos principalmente por sedimentos nao-marinhos, foram um grande desafio em termos de correlacao com a Tabela Cronoestratigrafica Internacional. Assim, foram empregados andares locais, sendo o estratigraficamente mais alto o Andar Alagoas, com o qual a Sequencia Pos-rifte I da Bacia do Araripe esta relacionada. Quanto a litoestratigrafia, essa sequencia inclui as formacoes Rio da Batateira (Barbalha para alguns autores) e Santana, a qual esta subdividida nos famosos membros Crato, Ipubi e Romualdo, da base para o topo. Embora atualmente haja consenso sobre a idade do Andar Alagoas naBacia do Araripe, recentemente foi proposta uma nova idade para parte da Sequencia Pos-rifte I. Essa nova proposta, baseada em analises isotopicas de Re-Os, foi apresentada como uma panaceia para correlacionar a formacao Rio da Batateira e os membros Crato e Ipubi com os andares internacionais. Surpreendentemente, seus autores, embora por um lado parecam desmerecer resultados bioestratigraficos, por outro buscam embasar sua proposta em microfosseis estudados por outros autores, mas o fazem de forma desacertada, levando os leitores a interpretarem equivocadamente seus resultados. Portanto, esse artigo apresenta uma revisao critica da idade do Andar Alagoas na Bacia do Araripe e bacias proximas, refutando uma idade barremiana para parte da Sequencia Pos-rifte I. Palavras-chave: Andar Alagoas, bioestratigrafia, ostracodes, palinomorfos, idades radiometricas.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
巴西东北部下白垩统Araripe盆地后裂谷层序1的时代:时空相关性的意义
基于微化石的强有力的生物地层学分带支持了巴西东北部下白垩统内部盆地的地层格架和对比。这种分带也允许与巴西边缘盆地和加蓬和刚果盆地(中非西部)的同期剖面进行对比。这些记录主要由非海相沉积物组成,在与国际年代地层图的对比方面是一个巨大的挑战。因此,采用局部阶段,最近的是阿拉戈斯局部巴西阶段,与Araripe盆地的后裂谷层序I有关。在岩石地层方面,该层序从底部到顶部包括里约热内卢da Batateira(有些作者称之为Barbalha)和Santana组,最后是著名的Crato、Ipubi和Romualdo组。尽管目前对于Araripe盆地的Alagoas当地巴西阶段的年龄已经达成共识,但最近提出了至少部分后裂谷层序I的新时代。这一基于Re-Os同位素分析的新建议,作为将bbb100 da Batateira组和Crato和Ipubi成员与国际舞台联系起来的灵丹妙药。令人惊讶的是,他们的作者一方面似乎低估了生物地层学的结果,另一方面又试图从前人研究过的微化石中寻求支持,但他们这样做的方式不恰当,导致读者误解了他们的结果。因此,本文对Araripe盆地及附近盆地的Alagoas局部巴西阶段的年龄进行了批判性的回顾,反驳了部分后裂谷层序i的巴雷米亚时代。关键词:Alagoas局部巴西阶段,生物地层学,介形类,岩形,辐射年龄。在巴西东北地区,利用微化石支持的arcabouco地层特征,建立了一套完整的生物地层特征带,并与e白垩纪地层和bacias interioes地层进行了对比。区域修正案允许各地区的相关人员,如巴西边缘地区、刚果中部地区和刚果中部地区的相关人员。这些记录,主要的复合材料,主要的沉积物,主要的海洋沉积物,有孔层和大的地层分析,以及相关的术语,国际地层表。阿西姆,形成了empregados和ares locais,在安达拉戈亚斯的主要地区进行了地层划分,并与“后地层序列”和“盆地与地区关系”相一致。该序列包括Barbalha para alguns autores (Barbalha para alguns autores)和Santana (Santana),是著名成员Crato, Ipubi和Romualdo的一个相同的分支,数据库基础para to topo。最近的一项研究表明,最近的一项研究表明,在新发现的基础上,对Re-Os的同位素进行了基础分析,在新发现的基础上,对新发现的同位素进行了分析,并在新发现的基础上,对新发现的同位素进行了对比分析,并在新发现的基础上,对新发现的同位素进行了对比分析。观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,解释,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察,观察。研究:安达拉戈亚斯,生物地层学,介形虫,白斑虫,放射学,生物地层学。
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 去求助
来源期刊
CiteScore
1.60
自引率
14.30%
发文量
25
审稿时长
>12 weeks
期刊介绍: It publishes original contributions on all aspects of Paleontology. Papers are written in English, Spanish, or Portuguese and are reviewed by international experts.
期刊最新文献
A new symmoriiform shark and other chondrichthyan teeth from the earliest Permian of southern Brazil Mixed marine, brackish water, non-marine, and subaerial microfaunal association in the Red Marls Formation of the Western Aurès Basin (Upper Paleocene) Benthic foraminiferal biostratigraphy of the Oligocene Sequence of the Asmari Formation in the Interior Fars Sub-Zone, Zagros Belt, SW Iran Coneroichnus marinus ichnogenus et ichnospecies nov., a fossil trackway of marine reptile in the Maiolica Formation (Upper Jurassic–Lower Cretaceous) from Monte Conero, Marche, Italy A new specimen of whip scorpion (Arachnida; Thelyphonida) from the Crato Formation, Lower Cretaceous of Brazil
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1