The Cambrian-Ordovician siliciclastic platform of the Balcarce Formation (Tandilia System, Argentina): Facies, trace fossils, palaeoenvironments and sequence stratigraphy

The Lower Palaeozoic sedimentary cover of the Tandilia (Balcarce Formation) is made up of thick quartz arenite beds together with kaolinitic claystones and thin fine-grained conglomerates. The Balcarce Formation was formed in the nearshore and inner shelf environments of a tide-dominated and storm i...

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Detalles Bibliográficos
Autores principales: Poiré, Daniel Gustavo, Spalletti, Luis Antonio, Del Valle, A.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2003
Materias:
Geología
Cambrian-Ordovician
Quartz arenites
Shallow marine
Trace fossils
Tandilia system
Argentina
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/114693
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-114693
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Geología
Cambrian-Ordovician
Quartz arenites
Shallow marine
Trace fossils
Tandilia system
Argentina
spellingShingle Geología
Cambrian-Ordovician
Quartz arenites
Shallow marine
Trace fossils
Tandilia system
Argentina
Poiré, Daniel Gustavo
Spalletti, Luis Antonio
Del Valle, A.
The Cambrian-Ordovician siliciclastic platform of the Balcarce Formation (Tandilia System, Argentina): Facies, trace fossils, palaeoenvironments and sequence stratigraphy
topic_facet Geología
Cambrian-Ordovician
Quartz arenites
Shallow marine
Trace fossils
Tandilia system
Argentina
description The Lower Palaeozoic sedimentary cover of the Tandilia (Balcarce Formation) is made up of thick quartz arenite beds together with kaolinitic claystones and thin fine-grained conglomerates. The Balcarce Formation was formed in the nearshore and inner shelf environments of a tide-dominated and storm influenced open platform. It shows many features suggesting tidal sedimentation. Coarse-grained facies were formed by sand bar migration and accretion. Heterolithic packages are interpreted as interbar (swale) deposits. Subordinated HCS sandstones indicate storm events. The recognition of thick progradational clinoforms allows to confirm that the Balcarce sea was open to the south, as suggested years ago through palaeocurrent interpretation. The great abundance and variety of trace fossils is among the most outstanding characteristics of this unit. The ichnotaxa that have been recognised so far are: Ancorichnus ancorichnus, Arthrophycus alleghaniensis, Arthrophycus isp., Bergaueria isp., Cochlichnus isp., Conostichus isp., Cruziana furcifera, Cruziana isp., Daedalus labeckei, Didymaulichnus lyelli, Didymaulichnus isp., Diplichnites isp., Diplocraterion isp., Herradurichnus scagliai, ?Monocraterion isp., Monomorphichnus isp., Palaeophycus alternatus, Palaeophycus tubularis, Palaeophycus isp., Phycodes aff. pedum, Phycodes isp., Plagiogmus isp., Planolites isp., Rusophycus isp., Scolicia isp. and Teichichnus isp. Trace fossils have traditionally been used to assign the Balcarce Formation to the Lower Ordovician, due to the presence of Cruziana furcifera. However, Plagiogmus is typical of Cambrian successions world-wide.
format Articulo
Articulo
author Poiré, Daniel Gustavo
Spalletti, Luis Antonio
Del Valle, A.
author_facet Poiré, Daniel Gustavo
Spalletti, Luis Antonio
Del Valle, A.
author_sort Poiré, Daniel Gustavo
title The Cambrian-Ordovician siliciclastic platform of the Balcarce Formation (Tandilia System, Argentina): Facies, trace fossils, palaeoenvironments and sequence stratigraphy
title_short The Cambrian-Ordovician siliciclastic platform of the Balcarce Formation (Tandilia System, Argentina): Facies, trace fossils, palaeoenvironments and sequence stratigraphy
title_full The Cambrian-Ordovician siliciclastic platform of the Balcarce Formation (Tandilia System, Argentina): Facies, trace fossils, palaeoenvironments and sequence stratigraphy
title_fullStr The Cambrian-Ordovician siliciclastic platform of the Balcarce Formation (Tandilia System, Argentina): Facies, trace fossils, palaeoenvironments and sequence stratigraphy
title_full_unstemmed The Cambrian-Ordovician siliciclastic platform of the Balcarce Formation (Tandilia System, Argentina): Facies, trace fossils, palaeoenvironments and sequence stratigraphy
title_sort cambrian-ordovician siliciclastic platform of the balcarce formation (tandilia system, argentina): facies, trace fossils, palaeoenvironments and sequence stratigraphy
publishDate 2003
url http://sedici.unlp.edu.ar/handle/10915/114693
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