Ichnology of the Late Carboniferous Hoyada Verde Formation of western Argentina: Exploring postglacial shallow-marine ecosystems of Gondwana

The postglacial interval of the Upper Carboniferous Hoyada Verde Formation of western Argentina contains an ichnofauna dominated by Psammichnites plummeri and Psammichnites implexus, with minor occurrences of Ptychoplasma vagans, Treptichnus bifurcus, Lingulichnus verticalis, Protovirgularia isp., L...

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Autores principales: Alonso-Muruaga, P.J., Buatois, L.A., Limarino, C.O.
Formato: JOUR
Materias:
Carboniferous
Cruziana Ichnofacies
Delta
Glacial
Gondwana
Ichnology
brackish water
delta
ichnology
ichthyofauna
paleogeography
paleotopography
sequence stratigraphy
trace fossil
trackway
Argentina
Arthropoda
Cruziana
Lockeia
Palaeophycus
Psammichnites implexus
Psammichnites plummeri
Treptichnus bifurcus
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00310182_v369_n_p228_AlonsoMuruaga
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_00310182_v369_n_p228_AlonsoMuruaga2023-10-03T14:40:54Z Ichnology of the Late Carboniferous Hoyada Verde Formation of western Argentina: Exploring postglacial shallow-marine ecosystems of Gondwana Alonso-Muruaga, P.J. Buatois, L.A. Limarino, C.O. Carboniferous Cruziana Ichnofacies Delta Glacial Gondwana Ichnology brackish water Carboniferous delta Gondwana ichnology ichthyofauna paleogeography paleotopography sequence stratigraphy trace fossil trackway Argentina Arthropoda Cruziana Lockeia Palaeophycus Psammichnites implexus Psammichnites plummeri Treptichnus bifurcus The postglacial interval of the Upper Carboniferous Hoyada Verde Formation of western Argentina contains an ichnofauna dominated by Psammichnites plummeri and Psammichnites implexus, with minor occurrences of Ptychoplasma vagans, Treptichnus bifurcus, Lingulichnus verticalis, Protovirgularia isp., Lockeia isp., Palaeophycus isp., scarce arthropod trackways and some bilobate structures. The particular features of this association indicate a depauperate expression of the Cruziana Ichnofacies, and suggest a context that differs from the expected in normal shallow-marine settings (i.e. archetypal Cruziana Ichnofacies). Integration of sedimentologic, ichnologic, sequence-stratigraphic and paleontologic data points to a prograding deltaic system influenced by wave action. Trace fossils have been extensively used to recognize stressed brackish-water environments in the late Paleozoic of Gondwana. However, the recognition of stressed settings needs to take into consideration the specific paleogeographic context of glacially influenced Gondwanan settings. A postglacial open sea adjacent to a paleotopographic high is considered as a possible scenario for the Hoyada Verde Formation. In this particular setting, coastal biotas could have been influenced to some degree by the salinity gradient triggered by freshwater release near to melting ice masses stored in highlands and also by freshwater plumes due to longshore currents. Regional factors (e.g. proximity to highlands and climate) may have played an important role in controlling the characteristics of Gondwanan ichnofaunas. This suggests that the distinction between normal-marine and brackish-water settings in glacially influenced environments using trace fossils may not be as straightforward as in non-glacial settings. © 2012 Elsevier B.V. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00310182_v369_n_p228_AlonsoMuruaga
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Carboniferous
Cruziana Ichnofacies
Delta
Glacial
Gondwana
Ichnology
brackish water
Carboniferous
delta
Gondwana
ichnology
ichthyofauna
paleogeography
paleotopography
sequence stratigraphy
trace fossil
trackway
Argentina
Arthropoda
Cruziana
Lockeia
Palaeophycus
Psammichnites implexus
Psammichnites plummeri
Treptichnus bifurcus
spellingShingle Carboniferous
Cruziana Ichnofacies
Delta
Glacial
Gondwana
Ichnology
brackish water
Carboniferous
delta
Gondwana
ichnology
ichthyofauna
paleogeography
paleotopography
sequence stratigraphy
trace fossil
trackway
Argentina
Arthropoda
Cruziana
Lockeia
Palaeophycus
Psammichnites implexus
Psammichnites plummeri
Treptichnus bifurcus
Alonso-Muruaga, P.J.
Buatois, L.A.
Limarino, C.O.
Ichnology of the Late Carboniferous Hoyada Verde Formation of western Argentina: Exploring postglacial shallow-marine ecosystems of Gondwana
topic_facet Carboniferous
Cruziana Ichnofacies
Delta
Glacial
Gondwana
Ichnology
brackish water
Carboniferous
delta
Gondwana
ichnology
ichthyofauna
paleogeography
paleotopography
sequence stratigraphy
trace fossil
trackway
Argentina
Arthropoda
Cruziana
Lockeia
Palaeophycus
Psammichnites implexus
Psammichnites plummeri
Treptichnus bifurcus
description The postglacial interval of the Upper Carboniferous Hoyada Verde Formation of western Argentina contains an ichnofauna dominated by Psammichnites plummeri and Psammichnites implexus, with minor occurrences of Ptychoplasma vagans, Treptichnus bifurcus, Lingulichnus verticalis, Protovirgularia isp., Lockeia isp., Palaeophycus isp., scarce arthropod trackways and some bilobate structures. The particular features of this association indicate a depauperate expression of the Cruziana Ichnofacies, and suggest a context that differs from the expected in normal shallow-marine settings (i.e. archetypal Cruziana Ichnofacies). Integration of sedimentologic, ichnologic, sequence-stratigraphic and paleontologic data points to a prograding deltaic system influenced by wave action. Trace fossils have been extensively used to recognize stressed brackish-water environments in the late Paleozoic of Gondwana. However, the recognition of stressed settings needs to take into consideration the specific paleogeographic context of glacially influenced Gondwanan settings. A postglacial open sea adjacent to a paleotopographic high is considered as a possible scenario for the Hoyada Verde Formation. In this particular setting, coastal biotas could have been influenced to some degree by the salinity gradient triggered by freshwater release near to melting ice masses stored in highlands and also by freshwater plumes due to longshore currents. Regional factors (e.g. proximity to highlands and climate) may have played an important role in controlling the characteristics of Gondwanan ichnofaunas. This suggests that the distinction between normal-marine and brackish-water settings in glacially influenced environments using trace fossils may not be as straightforward as in non-glacial settings. © 2012 Elsevier B.V.
format JOUR
author Alonso-Muruaga, P.J.
Buatois, L.A.
Limarino, C.O.
author_facet Alonso-Muruaga, P.J.
Buatois, L.A.
Limarino, C.O.
author_sort Alonso-Muruaga, P.J.
title Ichnology of the Late Carboniferous Hoyada Verde Formation of western Argentina: Exploring postglacial shallow-marine ecosystems of Gondwana
title_short Ichnology of the Late Carboniferous Hoyada Verde Formation of western Argentina: Exploring postglacial shallow-marine ecosystems of Gondwana
title_full Ichnology of the Late Carboniferous Hoyada Verde Formation of western Argentina: Exploring postglacial shallow-marine ecosystems of Gondwana
title_fullStr Ichnology of the Late Carboniferous Hoyada Verde Formation of western Argentina: Exploring postglacial shallow-marine ecosystems of Gondwana
title_full_unstemmed Ichnology of the Late Carboniferous Hoyada Verde Formation of western Argentina: Exploring postglacial shallow-marine ecosystems of Gondwana
title_sort ichnology of the late carboniferous hoyada verde formation of western argentina: exploring postglacial shallow-marine ecosystems of gondwana
url http://hdl.handle.net/20.500.12110/paper_00310182_v369_n_p228_AlonsoMuruaga
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AT limarinoco ichnologyofthelatecarboniferoushoyadaverdeformationofwesternargentinaexploringpostglacialshallowmarineecosystemsofgondwana
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