Bivalve trace fossils in an early Miocene discontinuity surface in Patagonia, Argentina: Burrowing behavior and implications for ichnotaxonomy at the firmground-hardground divide

Autores
Carmona, Noelia Beatriz; Mángano, María Gabriela; Buatois, Luis A.; Ponce, Juan Jose
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Ichnofossils developed in a firmground at the contact between the middle Eocene-lower Miocene continental Sarmiento Formation and the lower Miocene marine Chenque Formation, in central-eastern Patagonia, Argentina, are assigned to Gastrochaenolites ornatus Kelly and Bromley [Kelly, S.R.A., Bromley, R.G., 1984. Ichnological nomenclature of clavate borings. Palaeontology 27, 793-807.], and interpreted as dwelling structures of suspension-feeding bivalves. These record the activities of pholadids, most likely belonging to the Pholadinae. Bivalves are usually preserved as casts and external molds within the biogenic structures. The details of the internal ornamentation in G. ornatus allow identification of two sets of scratch patterns, permitting comparison with the boring behavior of modern pholadids. In terms of ichnotaxonomy, when the same organism is able both to excavate and to bore, and the excavation technique is identical to the mechanical perforation technique, the same name should be used. Accordingly, Gastrochaenolites, whilst more commonly assigned to bioerosion structures in hard substrates, is herein regarded as available also for bivalve burrows in firm, but unlithified substrates. The firmground studied here represents a co-planar surface of lowstand erosion and transgressive erosion that produced exhumation of deposits belonging to the Sarmiento Formation, providing appropriate conditions for the development of the Glossifungites ichnofacies. Differential erosion of the apertural necks, the heterogeneity of the available casting material, and the wide size range of ichnofossils suggest a complex history of colonization and erosion for this surface.
Fil: Carmona, Noelia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Mángano, María Gabriela. University Of Saskatchewan. Department Geological Sciences;
Fil: Buatois, Luis A.. University Of Saskatchewan. Department Geological Sciences;
Fil: Ponce, Juan Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Materia
BIOTURBATION
BIVALVES
FIRMGROUND
GLOSSIFUNGITES ICHNOFACIES
PATAGONIA
PHOLADIDAE
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/151639
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/151639
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Bivalve trace fossils in an early Miocene discontinuity surface in Patagonia, Argentina: Burrowing behavior and implications for ichnotaxonomy at the firmground-hardground divideCarmona, Noelia BeatrizMángano, María GabrielaBuatois, Luis A.Ponce, Juan JoseBIOTURBATIONBIVALVESFIRMGROUNDGLOSSIFUNGITES ICHNOFACIESPATAGONIAPHOLADIDAEhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Ichnofossils developed in a firmground at the contact between the middle Eocene-lower Miocene continental Sarmiento Formation and the lower Miocene marine Chenque Formation, in central-eastern Patagonia, Argentina, are assigned to Gastrochaenolites ornatus Kelly and Bromley [Kelly, S.R.A., Bromley, R.G., 1984. Ichnological nomenclature of clavate borings. Palaeontology 27, 793-807.], and interpreted as dwelling structures of suspension-feeding bivalves. These record the activities of pholadids, most likely belonging to the Pholadinae. Bivalves are usually preserved as casts and external molds within the biogenic structures. The details of the internal ornamentation in G. ornatus allow identification of two sets of scratch patterns, permitting comparison with the boring behavior of modern pholadids. In terms of ichnotaxonomy, when the same organism is able both to excavate and to bore, and the excavation technique is identical to the mechanical perforation technique, the same name should be used. Accordingly, Gastrochaenolites, whilst more commonly assigned to bioerosion structures in hard substrates, is herein regarded as available also for bivalve burrows in firm, but unlithified substrates. The firmground studied here represents a co-planar surface of lowstand erosion and transgressive erosion that produced exhumation of deposits belonging to the Sarmiento Formation, providing appropriate conditions for the development of the Glossifungites ichnofacies. Differential erosion of the apertural necks, the heterogeneity of the available casting material, and the wide size range of ichnofossils suggest a complex history of colonization and erosion for this surface.Fil: Carmona, Noelia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Mángano, María Gabriela. University Of Saskatchewan. Department Geological Sciences;Fil: Buatois, Luis A.. University Of Saskatchewan. Department Geological Sciences;Fil: Ponce, Juan Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaElsevier Science2007-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/151639Carmona, Noelia Beatriz; Mángano, María Gabriela; Buatois, Luis A.; Ponce, Juan Jose; Bivalve trace fossils in an early Miocene discontinuity surface in Patagonia, Argentina: Burrowing behavior and implications for ichnotaxonomy at the firmground-hardground divide; Elsevier Science; Palaeogeography, Palaeoclimatology, Palaeoecology; 255; 3-4; 11-2007; 329-3410031-0182CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0031018207004105info:eu-repo/semantics/altIdentifier/doi/10.1016/j.palaeo.2007.07.014info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:10:59Zoai:ri.conicet.gov.ar:11336/151639instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:11:00.101CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Bivalve trace fossils in an early Miocene discontinuity surface in Patagonia, Argentina: Burrowing behavior and implications for ichnotaxonomy at the firmground-hardground divide
title Bivalve trace fossils in an early Miocene discontinuity surface in Patagonia, Argentina: Burrowing behavior and implications for ichnotaxonomy at the firmground-hardground divide
spellingShingle Bivalve trace fossils in an early Miocene discontinuity surface in Patagonia, Argentina: Burrowing behavior and implications for ichnotaxonomy at the firmground-hardground divide
Carmona, Noelia Beatriz
BIOTURBATION
BIVALVES
FIRMGROUND
GLOSSIFUNGITES ICHNOFACIES
PATAGONIA
PHOLADIDAE
title_short Bivalve trace fossils in an early Miocene discontinuity surface in Patagonia, Argentina: Burrowing behavior and implications for ichnotaxonomy at the firmground-hardground divide
title_full Bivalve trace fossils in an early Miocene discontinuity surface in Patagonia, Argentina: Burrowing behavior and implications for ichnotaxonomy at the firmground-hardground divide
title_fullStr Bivalve trace fossils in an early Miocene discontinuity surface in Patagonia, Argentina: Burrowing behavior and implications for ichnotaxonomy at the firmground-hardground divide
title_full_unstemmed Bivalve trace fossils in an early Miocene discontinuity surface in Patagonia, Argentina: Burrowing behavior and implications for ichnotaxonomy at the firmground-hardground divide
title_sort Bivalve trace fossils in an early Miocene discontinuity surface in Patagonia, Argentina: Burrowing behavior and implications for ichnotaxonomy at the firmground-hardground divide
dc.creator.none.fl_str_mv Carmona, Noelia Beatriz
Mángano, María Gabriela
Buatois, Luis A.
Ponce, Juan Jose
author Carmona, Noelia Beatriz
author_facet Carmona, Noelia Beatriz
Mángano, María Gabriela
Buatois, Luis A.
Ponce, Juan Jose
author_role author
author2 Mángano, María Gabriela
Buatois, Luis A.
Ponce, Juan Jose
author2_role author
author
author
dc.subject.none.fl_str_mv BIOTURBATION
BIVALVES
FIRMGROUND
GLOSSIFUNGITES ICHNOFACIES
PATAGONIA
PHOLADIDAE
topic BIOTURBATION
BIVALVES
FIRMGROUND
GLOSSIFUNGITES ICHNOFACIES
PATAGONIA
PHOLADIDAE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Ichnofossils developed in a firmground at the contact between the middle Eocene-lower Miocene continental Sarmiento Formation and the lower Miocene marine Chenque Formation, in central-eastern Patagonia, Argentina, are assigned to Gastrochaenolites ornatus Kelly and Bromley [Kelly, S.R.A., Bromley, R.G., 1984. Ichnological nomenclature of clavate borings. Palaeontology 27, 793-807.], and interpreted as dwelling structures of suspension-feeding bivalves. These record the activities of pholadids, most likely belonging to the Pholadinae. Bivalves are usually preserved as casts and external molds within the biogenic structures. The details of the internal ornamentation in G. ornatus allow identification of two sets of scratch patterns, permitting comparison with the boring behavior of modern pholadids. In terms of ichnotaxonomy, when the same organism is able both to excavate and to bore, and the excavation technique is identical to the mechanical perforation technique, the same name should be used. Accordingly, Gastrochaenolites, whilst more commonly assigned to bioerosion structures in hard substrates, is herein regarded as available also for bivalve burrows in firm, but unlithified substrates. The firmground studied here represents a co-planar surface of lowstand erosion and transgressive erosion that produced exhumation of deposits belonging to the Sarmiento Formation, providing appropriate conditions for the development of the Glossifungites ichnofacies. Differential erosion of the apertural necks, the heterogeneity of the available casting material, and the wide size range of ichnofossils suggest a complex history of colonization and erosion for this surface.
Fil: Carmona, Noelia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Mángano, María Gabriela. University Of Saskatchewan. Department Geological Sciences;
Fil: Buatois, Luis A.. University Of Saskatchewan. Department Geological Sciences;
Fil: Ponce, Juan Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
description Ichnofossils developed in a firmground at the contact between the middle Eocene-lower Miocene continental Sarmiento Formation and the lower Miocene marine Chenque Formation, in central-eastern Patagonia, Argentina, are assigned to Gastrochaenolites ornatus Kelly and Bromley [Kelly, S.R.A., Bromley, R.G., 1984. Ichnological nomenclature of clavate borings. Palaeontology 27, 793-807.], and interpreted as dwelling structures of suspension-feeding bivalves. These record the activities of pholadids, most likely belonging to the Pholadinae. Bivalves are usually preserved as casts and external molds within the biogenic structures. The details of the internal ornamentation in G. ornatus allow identification of two sets of scratch patterns, permitting comparison with the boring behavior of modern pholadids. In terms of ichnotaxonomy, when the same organism is able both to excavate and to bore, and the excavation technique is identical to the mechanical perforation technique, the same name should be used. Accordingly, Gastrochaenolites, whilst more commonly assigned to bioerosion structures in hard substrates, is herein regarded as available also for bivalve burrows in firm, but unlithified substrates. The firmground studied here represents a co-planar surface of lowstand erosion and transgressive erosion that produced exhumation of deposits belonging to the Sarmiento Formation, providing appropriate conditions for the development of the Glossifungites ichnofacies. Differential erosion of the apertural necks, the heterogeneity of the available casting material, and the wide size range of ichnofossils suggest a complex history of colonization and erosion for this surface.
publishDate 2007
dc.date.none.fl_str_mv 2007-11
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/151639
Carmona, Noelia Beatriz; Mángano, María Gabriela; Buatois, Luis A.; Ponce, Juan Jose; Bivalve trace fossils in an early Miocene discontinuity surface in Patagonia, Argentina: Burrowing behavior and implications for ichnotaxonomy at the firmground-hardground divide; Elsevier Science; Palaeogeography, Palaeoclimatology, Palaeoecology; 255; 3-4; 11-2007; 329-341
0031-0182
CONICET Digital
CONICET
url http://hdl.handle.net/11336/151639
identifier_str_mv Carmona, Noelia Beatriz; Mángano, María Gabriela; Buatois, Luis A.; Ponce, Juan Jose; Bivalve trace fossils in an early Miocene discontinuity surface in Patagonia, Argentina: Burrowing behavior and implications for ichnotaxonomy at the firmground-hardground divide; Elsevier Science; Palaeogeography, Palaeoclimatology, Palaeoecology; 255; 3-4; 11-2007; 329-341
0031-0182
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0031018207004105
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.palaeo.2007.07.014
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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