Multi-proxy analysis of the Cerro Negro formation, Argentina: bioestratigraphy and paleoenvironment of the first Ediacaran fossillagerstätte in South America

• Grant number: 15/24608-3
• Support Opportunities: Regular Research Grants
• Duration: July 01, 2016 - September 30, 2018
• Field of knowledge: Physical Sciences and Mathematics - Geosciences - Geology
• Principal Investigator: Lucas Verissimo Warren
• Grantee: Lucas Verissimo Warren
• Host Institution: Instituto de Geociências e Ciências Exatas (IGCE). Universidade Estadual Paulista (UNESP). Campus de Rio Claro. Rio Claro , SP, Brazil
• Associated researchers: Claudio Riccomini ; Cristiano de Carvalho Lana ; Daniel G. Poiré ; Eric Tohver ; Fernanda Quaglio ; Giancarlo Scardia ; Lucas Inglez dos Reis ; Luciano Alessandretti ; Marcello Guimarães Simões ; Maria Julia Arrouy ; Mario Luis Assine

Abstract

Following important findings in the last decade, the knowledge of the Ediacaran Fauna of the Gondwana supercontinent has substantially increased. Remarkable fossiliferous occurrences of the first Edicaran Skeletonized metazoans (Nama Assemblage, 550-541 Ma), were recorded in Uruguay, Paraguay, Argentina and Brazil, driving new studies on taxonomy, taphonomy and paleoecology of those assemblages. However, to date there are no confirmed occurrences of typical organisms of the Ediacaran Assemblages, found in all continents worldwide (Avalon and White Sea assemblages, 575-550 Ma), and which are characterized by soft body parts. A recently conducted study in the Cerro Negro Formation, La Providencia Group, Neoproterozoic of Argentina has revealed the presence of thousands of soft-bodied fossil organisms characteristic of the named "Ediacaran Fauna", as representatives of the genus Aspidella, discoidal forms, non-identified taxa, as well as MISS and ichnofossils. After the discovery of this unique fossil assemblage in the continent (konservat fossillagerstätte) altogether with the existence of previous works on sedimentology and stratigraphy, the accomplishment of multi-proxy studies approaching paleoecology, geochronology and paleomagnestism is on demand. This project will enable to build up a proper paleoenvironmental and bioestratigraphic framework of this singular fossil occurrence, in addition to provide an important tool for stratigraphic correlation with another Avalon and White Sea fossil-bearing Ediacaran units. The results of this project definitively will place the South America continent as one of the main worldwide spots in the studies of the Precambrian paleontology. (AU)

Scientific publications

(8)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

WARREN, LUCAS VERISSIMO; QUAGLIO, FERNANDA; SIMOES, MARCELLO GUIMARAES; GAUCHER, CLAUDIO; RICCOMINI, CLAUDIO; POIRE, DANIEL G.; FREITAS, BERNARDO TAVARES; BOGGIANI, PAULO C.; SIAL, ALCIDES NOBREGA. Cloudina-Corumbella-Namacalathus association from the Itapucumi Group, Paraguay: Increasing ecosystem complexity and tiering at the end of the Ediacaran. Precambrian Research, v. 298, p. 79-87, SEP 2017. (10/02677-0, 10/19584-4, 15/24608-3)

WARREN, L. V.; FREITAS, B. T.; RICCOMINI, C.; BOGGIANI, P. C.; QUAGLIO, F.; SIMOES, M. G.; FAIRCHILD, T. R.; GIORGIONI, M.; GAUCHER, C.; POIRE, D. G.; et al. Sedimentary evolution and tectonic setting of the Itapucumi Group, Ediacaran, northern Paraguay: From Rodinia break-up to West Gondwana amalgamation. Precambrian Research, v. 322, p. 99-121, MAR 2019. (10/02677-0, 10/19584-4, 15/24608-3)

JULIA ARROUY, MARIA; GAUCHER, CLAUDIO; POIRE, DANIEL G.; XIAO, SHUHAI; GOMEZ PERAL, LUCIA E.; WARREN, LUCAS V.; BYKOVA, NATALIA; QUAGLIO, FERNANDA. A new record of late Ediacaran acritarchs from La providencia group (Tandilia System, Argentina) and its biostratigraphical significance. Journal of South American Earth Sciences, v. 93, p. 283-293, AUG 2019. (15/24608-3)

ALCIDES NOBREGA SIAL; CLAUDIO GAUCHER; AROLDO MISI; PAULO CESAR BOGGIANI; CARLOS JOSÉ SOUZA DE ALVARENGA; VALDEREZ PINTO FERREIRA; MARCIO MARTINS PIMENTEL; JOSÉ AUGUSTO PEDREIRA; LUCAS VERISSIMO WARREN; RODRIGO FERNÁNDEZ-RAMÍREZ; et al. Correlações de algumas sucessões carbonáticas na América do Sul baseado em quimioestratigrafia de alta resolução. BRAZILIAN JOURNAL OF GEOLOGY, v. 46, n. 3, p. 439-488, 2016-09-00. (10/02677-0, 15/24608-3)

JULIA ARROUY, MARIA; WARREN, LUCAS V.; QUAGLIO, FERNANDA; POIRE, DANIEL G.; SIMOES, MARCELLO GUIMARAES; ROSA, MILENA BOSELLI; GOMEZ PERAL, LUCIA E.. Ediacaran discs from South America: probable soft-bodied macrofossils unlock the paleogeography of the Clymene Ocean. SCIENTIFIC REPORTS, v. 6, JUL 27 2016. (15/24608-3)

INGLEZ, L.; WARREN, L. V.; OKUBO, J.; SIMOES, M. G.; QUAGLIO, F.; ARROUY, M. J.; NETTO, R. G.. Discs and discord: The paleontological record of Ediacaran discoidal structures in the south American continent. Journal of South American Earth Sciences, v. 89, p. 319-336, JAN 2019. (15/24608-3)

MARÍA JULIA ARROUY; LUCAS VERÍSSIMO WARREN; FERNANDA QUAGLIO; LUCÍA GÓMEZ-PERAL; LUCAS INGLEZ; VICTORIA PENZO; MARCELLO GUIMARÃES SIMÕES; DANIEL GUSTAVO POIRÉ. The missing mats: MISS diversity and influence on life preservation in the late Ediacaran of the Tandilia System, Argentina. BRAZILIAN JOURNAL OF GEOLOGY, v. 53, n. 2, 2023-08-14. (15/24608-3)

INGLEZ, LUCAS; WARREN, LUCAS, V; QUAGLIO, FERNANDA; NETTO, RENATA G.; OKUBO, JULIANA; ARROUY, MARIA J.; SIMOES, MARCELLO G.; POIRE, DANIEL G.. Scratching the discs: evaluating alternative hypotheses for the origin of the Ediacaran discoidal structures from the Cerro Negro Formation, La Providencia Group, Argentina. GEOLOGICAL MAGAZINE, v. N/A, p. 18-pg., 2021-05-03. (15/24608-3)