An accurate record of volcanic ash fall deposition as characterized by dispersed organic matter in a Lower Permian tonstein bed (Faxinal Coalfield, Paraná Basin, Brazil)

Simas, M. W.; Guerra-Sommer, M.; Mendonça, J. G.; Cazzulo-Klepzig, Filho M.; Formoso, M. L. L.; Degani-Schmidt, I.

An accurate record of volcanic ash fall deposition as characterized by dispersed organic matter in a Lower Permian tonstein bed (Faxinal Coalfield, Paraná Basin, Brazil)

For the first time, the dispersed organic matter in the tonstein layer interbedded with a coal seam in the Faxinal Coalfield (Sakmarian, Southern Paraná Basin, Brazil) is characterized. The deposition of clusters of pollen grains was highly influenced by the intense ash fall process that probably oc...

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Autores:	Simas, M. W., Guerra-Sommer, M., Mendonça, J. G., Cazzulo-Klepzig, Filho M., Formoso, M. L. L., Degani-Schmidt, I.
Tipo de recurso:	artículo
Fecha de publicación:	2013
País:	España
Institución:	Universitat Autònoma de Barcelona
Repositorio:	Dipòsit Digital de Documents de la UAB
Idioma:	inglés
OAI Identifier:	oai:ddd.uab.cat:106072
Acceso en línea:	https://ddd.uab.cat/record/106072 https://dx.doi.org/urn:doi:10.1344/105.000001835
Access Level:	acceso abierto
Palabra clave:	Tonstein Organic matter Volcanic ash fall Southern Paraná Basin

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spelling	An accurate record of volcanic ash fall deposition as characterized by dispersed organic matter in a Lower Permian tonstein bed (Faxinal Coalfield, Paraná Basin, Brazil)Simas, M. W.Guerra-Sommer, M.Mendonça, J. G.Cazzulo-Klepzig, Filho M.Formoso, M. L. L.Degani-Schmidt, I.TonsteinOrganic matterVolcanic ash fallSouthern Paraná BasinFor the first time, the dispersed organic matter in the tonstein layer interbedded with a coal seam in the Faxinal Coalfield (Sakmarian, Southern Paraná Basin, Brazil) is characterized. The deposition of clusters of pollen grains was highly influenced by the intense ash fall process that probably occurred during seasonal dehiscence of reproductive structures. The well-preserved phytoclasts with their upper and lower leaf cuticles stuck together indicate that the rapid fall of ash on this material hindered organic biodegradation. The preservation of seemingly autochthonous Botryococcus colonies at the top of the tonstein layer is evidence of the subaqueous deposition of this layer. The darkening in cuticles and xylem phytoclasts can be attributed to different causes: the thermal influence of ash fall during deposition, chemical effects of the ash, prolonged oxidation of organic matter in low water level conditions or the burning of plant organs by wildfires. Analyses of dispersed organic matter along the tonstein layer showed that the organic matter succession reflects the composition of different plant strata (herbaceous pteridophytes and arboreal glossopterids-cordaitaleans) around the deposition site. 22013-01-0120132013-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/106072https://dx.doi.org/urn:doi:10.1344/105.000001835reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengopen accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre i quan aquestes es distribueixin sota la mateixa llicència que regula l'obra original i es reconegui l'autoria.https://creativecommons.org/licenses/by-sa/3.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:1060722026-06-06T12:50:31Z
dc.title.none.fl_str_mv	An accurate record of volcanic ash fall deposition as characterized by dispersed organic matter in a Lower Permian tonstein bed (Faxinal Coalfield, Paraná Basin, Brazil)
title	An accurate record of volcanic ash fall deposition as characterized by dispersed organic matter in a Lower Permian tonstein bed (Faxinal Coalfield, Paraná Basin, Brazil)
spellingShingle	An accurate record of volcanic ash fall deposition as characterized by dispersed organic matter in a Lower Permian tonstein bed (Faxinal Coalfield, Paraná Basin, Brazil) Simas, M. W. Tonstein Organic matter Volcanic ash fall Southern Paraná Basin
title_short	An accurate record of volcanic ash fall deposition as characterized by dispersed organic matter in a Lower Permian tonstein bed (Faxinal Coalfield, Paraná Basin, Brazil)
title_full	An accurate record of volcanic ash fall deposition as characterized by dispersed organic matter in a Lower Permian tonstein bed (Faxinal Coalfield, Paraná Basin, Brazil)
title_fullStr	An accurate record of volcanic ash fall deposition as characterized by dispersed organic matter in a Lower Permian tonstein bed (Faxinal Coalfield, Paraná Basin, Brazil)
title_full_unstemmed	An accurate record of volcanic ash fall deposition as characterized by dispersed organic matter in a Lower Permian tonstein bed (Faxinal Coalfield, Paraná Basin, Brazil)
title_sort	An accurate record of volcanic ash fall deposition as characterized by dispersed organic matter in a Lower Permian tonstein bed (Faxinal Coalfield, Paraná Basin, Brazil)
dc.creator.none.fl_str_mv	Simas, M. W. Guerra-Sommer, M. Mendonça, J. G. Cazzulo-Klepzig, Filho M. Formoso, M. L. L. Degani-Schmidt, I.
author	Simas, M. W.
author_facet	Simas, M. W. Guerra-Sommer, M. Mendonça, J. G. Cazzulo-Klepzig, Filho M. Formoso, M. L. L. Degani-Schmidt, I.
author_role	author
author2	Guerra-Sommer, M. Mendonça, J. G. Cazzulo-Klepzig, Filho M. Formoso, M. L. L. Degani-Schmidt, I.
author2_role	author author author author author
dc.subject.none.fl_str_mv	Tonstein Organic matter Volcanic ash fall Southern Paraná Basin
topic	Tonstein Organic matter Volcanic ash fall Southern Paraná Basin
description	For the first time, the dispersed organic matter in the tonstein layer interbedded with a coal seam in the Faxinal Coalfield (Sakmarian, Southern Paraná Basin, Brazil) is characterized. The deposition of clusters of pollen grains was highly influenced by the intense ash fall process that probably occurred during seasonal dehiscence of reproductive structures. The well-preserved phytoclasts with their upper and lower leaf cuticles stuck together indicate that the rapid fall of ash on this material hindered organic biodegradation. The preservation of seemingly autochthonous Botryococcus colonies at the top of the tonstein layer is evidence of the subaqueous deposition of this layer. The darkening in cuticles and xylem phytoclasts can be attributed to different causes: the thermal influence of ash fall during deposition, chemical effects of the ash, prolonged oxidation of organic matter in low water level conditions or the burning of plant organs by wildfires. Analyses of dispersed organic matter along the tonstein layer showed that the organic matter succession reflects the composition of different plant strata (herbaceous pteridophytes and arboreal glossopterids-cordaitaleans) around the deposition site.
publishDate	2013
dc.date.none.fl_str_mv	2 2013-01-01 2013 2013-01-01
dc.type.none.fl_str_mv	Article http://purl.org/coar/resource_type/c_6501 VoR http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv	info:eu-repo/semantics/article
format	article
dc.identifier.none.fl_str_mv	https://ddd.uab.cat/record/106072 https://dx.doi.org/urn:doi:10.1344/105.000001835
url	https://ddd.uab.cat/record/106072 https://dx.doi.org/urn:doi:10.1344/105.000001835
dc.language.none.fl_str_mv	Inglés eng
language_invalid_str_mv	Inglés
language	eng
dc.rights.none.fl_str_mv	open access http://purl.org/coar/access_right/c_abf2 https://creativecommons.org/licenses/by-sa/3.0/
dc.rights.openaire.fl_str_mv	info:eu-repo/semantics/openAccess
rights_invalid_str_mv	open access http://purl.org/coar/access_right/c_abf2 https://creativecommons.org/licenses/by-sa/3.0/
eu_rights_str_mv	openAccess
dc.format.none.fl_str_mv	application/pdf
dc.source.none.fl_str_mv	reponame:Dipòsit Digital de Documents de la UAB instname:Universitat Autònoma de Barcelona
instname_str	Universitat Autònoma de Barcelona
reponame_str	Dipòsit Digital de Documents de la UAB
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An accurate record of volcanic ash fall deposition as characterized by dispersed organic matter in a Lower Permian tonstein bed (Faxinal Coalfield, Paraná Basin, Brazil)

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