Palynology from the Upper Carboniferous Itararé Subgroup at Itaporanga, Paraná Basin, São Paulo State, Brazil. Part two: Pollen systematics and palaeoenvironmental and stratigraphic significance

Systematic descriptions of 25 pollen grains from four core levels of the IG-01 borehole are presented to complete the whole assemblage with those described in part one. This section belongs to the middle-upper part of the Itararé Subgroup. The species included herein comprise: seventeen monosaccate...

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Autores principales: Di Pasquo, M., Azcuy, C.L., Souza, P.A.
Formato: JOUR
Materias:
Brazil
Itararé Subgroup
Late Carboniferous
Palaeoenvironment
Palynology
Paraná Basin
Pollen
Carboniferous
paleoenvironment
palynology
pollen
stratigraphic correlation
Bivalvia
Brachiopoda
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00027014_v40_n3_p297_DiPasquo
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00027014_v40_n3_p297_DiPasquo
record_format dspace
spelling todo:paper_00027014_v40_n3_p297_DiPasquo2023-10-03T13:52:49Z Palynology from the Upper Carboniferous Itararé Subgroup at Itaporanga, Paraná Basin, São Paulo State, Brazil. Part two: Pollen systematics and palaeoenvironmental and stratigraphic significance Di Pasquo, M. Azcuy, C.L. Souza, P.A. Brazil Itararé Subgroup Late Carboniferous Palaeoenvironment Palynology Paraná Basin Pollen Carboniferous paleoenvironment palynology pollen stratigraphic correlation Brazil Bivalvia Brachiopoda Systematic descriptions of 25 pollen grains from four core levels of the IG-01 borehole are presented to complete the whole assemblage with those described in part one. This section belongs to the middle-upper part of the Itararé Subgroup. The species included herein comprise: seventeen monosaccate pollen (one striate), six bisaccate pollen (two striate), one praecolpate pollen and one colpate. Circumplicatipollis plicatus Ottone and Azcuy is identified for the first time in the Paraná Basin. Previous paleontological information from this well including marine bivalves and brachiopods, is taken into account together with the palynological composition, botanical affinities, palynofacies and lithology, and a hypothesis of the palaeoenvironment / paleoclimatic conditions of depocentre is proposed. Initial estuarine conditions are registered at the 76 m level. A restricted coastal lagoon with a seasonal temperate climate corresponds to the 54 m level. The last episode, interpreted as a low energy and normal salinity shelf setting, is recognized at the 37 m and 36,5 m levels. Therefore, a relative rise in sea-level in this middle-upper section of the Itararé Subgroup is recognizable, and may correlate with glacial retreat. The palynological assemblage is datable as very Late Carboniferous based on previous records of selected miospore species. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00027014_v40_n3_p297_DiPasquo
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Brazil
Itararé Subgroup
Late Carboniferous
Palaeoenvironment
Palynology
Paraná Basin
Pollen
Carboniferous
paleoenvironment
palynology
pollen
stratigraphic correlation
Brazil
Bivalvia
Brachiopoda
spellingShingle Brazil
Itararé Subgroup
Late Carboniferous
Palaeoenvironment
Palynology
Paraná Basin
Pollen
Carboniferous
paleoenvironment
palynology
pollen
stratigraphic correlation
Brazil
Bivalvia
Brachiopoda
Di Pasquo, M.
Azcuy, C.L.
Souza, P.A.
Palynology from the Upper Carboniferous Itararé Subgroup at Itaporanga, Paraná Basin, São Paulo State, Brazil. Part two: Pollen systematics and palaeoenvironmental and stratigraphic significance
topic_facet Brazil
Itararé Subgroup
Late Carboniferous
Palaeoenvironment
Palynology
Paraná Basin
Pollen
Carboniferous
paleoenvironment
palynology
pollen
stratigraphic correlation
Brazil
Bivalvia
Brachiopoda
description Systematic descriptions of 25 pollen grains from four core levels of the IG-01 borehole are presented to complete the whole assemblage with those described in part one. This section belongs to the middle-upper part of the Itararé Subgroup. The species included herein comprise: seventeen monosaccate pollen (one striate), six bisaccate pollen (two striate), one praecolpate pollen and one colpate. Circumplicatipollis plicatus Ottone and Azcuy is identified for the first time in the Paraná Basin. Previous paleontological information from this well including marine bivalves and brachiopods, is taken into account together with the palynological composition, botanical affinities, palynofacies and lithology, and a hypothesis of the palaeoenvironment / paleoclimatic conditions of depocentre is proposed. Initial estuarine conditions are registered at the 76 m level. A restricted coastal lagoon with a seasonal temperate climate corresponds to the 54 m level. The last episode, interpreted as a low energy and normal salinity shelf setting, is recognized at the 37 m and 36,5 m levels. Therefore, a relative rise in sea-level in this middle-upper section of the Itararé Subgroup is recognizable, and may correlate with glacial retreat. The palynological assemblage is datable as very Late Carboniferous based on previous records of selected miospore species.
format JOUR
author Di Pasquo, M.
Azcuy, C.L.
Souza, P.A.
author_facet Di Pasquo, M.
Azcuy, C.L.
Souza, P.A.
author_sort Di Pasquo, M.
title Palynology from the Upper Carboniferous Itararé Subgroup at Itaporanga, Paraná Basin, São Paulo State, Brazil. Part two: Pollen systematics and palaeoenvironmental and stratigraphic significance
title_short Palynology from the Upper Carboniferous Itararé Subgroup at Itaporanga, Paraná Basin, São Paulo State, Brazil. Part two: Pollen systematics and palaeoenvironmental and stratigraphic significance
title_full Palynology from the Upper Carboniferous Itararé Subgroup at Itaporanga, Paraná Basin, São Paulo State, Brazil. Part two: Pollen systematics and palaeoenvironmental and stratigraphic significance
title_fullStr Palynology from the Upper Carboniferous Itararé Subgroup at Itaporanga, Paraná Basin, São Paulo State, Brazil. Part two: Pollen systematics and palaeoenvironmental and stratigraphic significance
title_full_unstemmed Palynology from the Upper Carboniferous Itararé Subgroup at Itaporanga, Paraná Basin, São Paulo State, Brazil. Part two: Pollen systematics and palaeoenvironmental and stratigraphic significance
title_sort palynology from the upper carboniferous itararé subgroup at itaporanga, paraná basin, são paulo state, brazil. part two: pollen systematics and palaeoenvironmental and stratigraphic significance
url http://hdl.handle.net/20.500.12110/paper_00027014_v40_n3_p297_DiPasquo
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