s
  • 首页
  • 学报简介
  • 编委会
  • 投稿指南
  • 常见问题解答
  • 预出版
  • 过刊浏览
  • 联系我们
  • Engilsh

本文将参加年度优秀论文评选,如果您觉得这篇文章很好,请投下您宝贵的一票,谢谢! 支持(0)   不支持(0)

Bioerosion on Late Pleistocene Marine Mollusks: A Paleoclimatological and Paleoecological Comparison of MIS 7 and MIS 5e with Modern Beaches (Río Negro, Argentina)
投稿时间:2019-08-06  修订日期:2019-11-12  点此下载全文
引用本文:Melisa P. CHARÓ,Gisela D. CHARÓ,Guillermo ACEÑOLAZA,Jose L. CAVALLOTTO.2022.Bioerosion on Late Pleistocene Marine Mollusks: A Paleoclimatological and Paleoecological Comparison of MIS 7 and MIS 5e with Modern Beaches (Río Negro, Argentina)[J].ACTA GEOLOGICA SINICA(English edition),96(4):1181~1198
摘要点击次数: 86
全文下载次数: 71
DOI:10.1111/1755-6724.14692
作者单位E-mail
Melisa P. CHARÓ 1 Instituto Superior de Correlación Geológica (INSUGEO /CONICET-UNT) Miguel Lillo 205, 4000 Tucumán, Argentina charomelisa@gmail.com 
Gisela D. CHARÓ 2 Laboratorio de Fluidodinámica, Departamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad de Buenos Aires, Paseo Colón 850, C1063ACV, Ciudad Autónoma de Buenos Aires, Argentina  
Guillermo ACEÑOLAZA 1 Instituto Superior de Correlación Geológica (INSUGEO /CONICET-UNT) Miguel Lillo 205, 4000 Tucumán, Argentina  
Jose L. CAVALLOTTO 3 Servicio de Hidrografía Naval, Av. Montes de Oca 2124, C1270ABW Buenos Aires, Argentina  
 
Author NameAffiliationE-mail
Melisa P. CHARÓ 1 Instituto Superior de Correlación Geológica (INSUGEO /CONICET-UNT) Miguel Lillo 205, 4000 Tucumán, Argentina charomelisa@gmail.com 
Gisela D. CHARÓ 2 Laboratorio de Fluidodinámica, Departamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad de Buenos Aires, Paseo Colón 850, C1063ACV, Ciudad Autónoma de Buenos Aires, Argentina  
Guillermo ACEÑOLAZA 1 Instituto Superior de Correlación Geológica (INSUGEO /CONICET-UNT) Miguel Lillo 205, 4000 Tucumán, Argentina  
Jose L. CAVALLOTTO 3 Servicio de Hidrografía Naval, Av. Montes de Oca 2124, C1270ABW Buenos Aires, Argentina  
Abstract:The Late Pleistocene littoral ridges of southern South America, especially those of the north of Argentinean Patagonia, contain remains of mollusk shells with bioerosion traces. Eleven sites from marine isotope stages (2 from MIS 7, 4 from MIS 5e) and five sites from modern beaches from northern Río Negro Province, with 40 taxa (17 bivalves and 23 gastropods) were analyzed, in the area between west of Baliza San Matías and Las Grutas (41°S). Three ichnogenera were identified in deposits of MIS 7: Entobia, Gastrochaenolites (Domichnia) and Oichnus (Praedichnia) with one ichnospecies (G. torpedo). Six ichnogenera were identified in deposits of MIS 5e: Entobia, Meandropolydora, Pinaceocladichnus, Iramena, Caulostrepsis and Oichnus with one ichnospecies (O. simplex). Seven ichnogenera were identified from modern beaches: Entobia, Meandropolydora, Iramena, Caulostrepsis, Pinaceocladichnus, Gastrochaenolites (Domichnia) and Oichnus (Praedicnia), with two ichnospecies (O. simplex and O. paraboloides). On this basis, it is inferred that Pleistocene benthic communities were constituted from cheilostome bryzoans and polychaete annelids, together with drilling bivalves, predatory gastropods and overall warm-water species of mollusks. Of these, Chama iudicai was found on Plicatula gibbosa from MIS 7 and MIS 5e. The record of warm temperature species suggests a higher sea surface temperature (SST) than the present one and/or the influence of the warm southward Brazilian Current affecting the waters of Golfo San Matías. On the modern beaches surveyed, there is an increase in polychaete annelids, cheilostome bryzoans, temperate-cold species and drilling bivalves, as well as sandy substrate species, which together with an increase of Gastrochaenolites and Caulostrepsis, suggest a colder climate due to the greater influence of the Malvinas Current during the Holocene.
keywords:invertebrate paleontology, ichnology, Bivalvia, Gastropoda, Polyplacophora, bioerosion, paleoclimatology, paleoecology, Quaternary/Holocene, Argentina
查看全文  查看/发表评论  下载PDF阅读器
您是第102315187位访问者  京ICP备05032737号-7  京公网 安备110102004559
版权所有:Acta Geologica Sinica (English Edition)
主管单位:中国科学技术协会 主办单位:中国地质学会
地  址: 北京市阜成门外百万庄26号 邮编:100037 电话:010-68999024 E-mail: geoacta@163.com
本系统由北京勤云科技发展有限公司设计 

京公网安备 11010202007916号

WeChat