Presence of charcoal as evidence of paleofires in the Claromecó Basin, Permian of Gondwana, Argentina: Diagenetic and paleoenvironment analysis based on coal petrography studies

The PANG0001 well, situated in the Claromecó Basin, Argentina, involves rocks that belong to the Tunas Formation [29], Permian of Gondwana. It is composed of fine to medium sandstones intercalating with black and green mudrocks and three coal seams up to 3 m thick. In the coals, a petrographic analy...

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Autores principales: Arzadún, G., Cisternas, M.E., Cesaretti, N.N., Tomezzoli, R.N.
Formato: JOUR
Materias:
Coal petrography
Gondwana
Palaeo-fires
Paleoclimate
Permian
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_22142428_v14_n_p121_Arzadun
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_22142428_v14_n_p121_Arzadun2023-10-03T16:40:37Z Presence of charcoal as evidence of paleofires in the Claromecó Basin, Permian of Gondwana, Argentina: Diagenetic and paleoenvironment analysis based on coal petrography studies Arzadún, G. Cisternas, M.E. Cesaretti, N.N. Tomezzoli, R.N. Coal petrography Gondwana Palaeo-fires Paleoclimate Permian The PANG0001 well, situated in the Claromecó Basin, Argentina, involves rocks that belong to the Tunas Formation [29], Permian of Gondwana. It is composed of fine to medium sandstones intercalating with black and green mudrocks and three coal seams up to 3 m thick. In the coals, a petrographic analysis was carried out to analyze the depositional environment and the diagenesis level reached by the Tunas Formation. The coals are composed of mono-maceral bands of Collotelinite and Gelinite, from the Vitrinite Group, or Fusinite, from the Inertinite Group. They were deposited in a wet swampy forest with rises and decreases of the phreatic level. The presence of inertinite or charcoal evidence the occurrence of palaeo-fires during the Permian. The vitrinite reflectance values are between 1.3% and 2.38%. The coals classify as semiantracitic to low volatile bituminous, with 10 to 25% of volatile matter. The vitrinite reflectance values indicate temperatures between 140 °C and 190 °C. The Tunas Formation reaches the oil to methane gas window, into a catagenesis to metagenesis range related to the organic matter diagenesis. Coal petrography is a good method for the environment and diagenesis analyses applied to the Tunas Formation. © 2017 Elsevier Ltd JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_22142428_v14_n_p121_Arzadun
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Coal petrography
Gondwana
Palaeo-fires
Paleoclimate
Permian
spellingShingle Coal petrography
Gondwana
Palaeo-fires
Paleoclimate
Permian
Arzadún, G.
Cisternas, M.E.
Cesaretti, N.N.
Tomezzoli, R.N.
Presence of charcoal as evidence of paleofires in the Claromecó Basin, Permian of Gondwana, Argentina: Diagenetic and paleoenvironment analysis based on coal petrography studies
topic_facet Coal petrography
Gondwana
Palaeo-fires
Paleoclimate
Permian
description The PANG0001 well, situated in the Claromecó Basin, Argentina, involves rocks that belong to the Tunas Formation [29], Permian of Gondwana. It is composed of fine to medium sandstones intercalating with black and green mudrocks and three coal seams up to 3 m thick. In the coals, a petrographic analysis was carried out to analyze the depositional environment and the diagenesis level reached by the Tunas Formation. The coals are composed of mono-maceral bands of Collotelinite and Gelinite, from the Vitrinite Group, or Fusinite, from the Inertinite Group. They were deposited in a wet swampy forest with rises and decreases of the phreatic level. The presence of inertinite or charcoal evidence the occurrence of palaeo-fires during the Permian. The vitrinite reflectance values are between 1.3% and 2.38%. The coals classify as semiantracitic to low volatile bituminous, with 10 to 25% of volatile matter. The vitrinite reflectance values indicate temperatures between 140 °C and 190 °C. The Tunas Formation reaches the oil to methane gas window, into a catagenesis to metagenesis range related to the organic matter diagenesis. Coal petrography is a good method for the environment and diagenesis analyses applied to the Tunas Formation. © 2017 Elsevier Ltd
format JOUR
author Arzadún, G.
Cisternas, M.E.
Cesaretti, N.N.
Tomezzoli, R.N.
author_facet Arzadún, G.
Cisternas, M.E.
Cesaretti, N.N.
Tomezzoli, R.N.
author_sort Arzadún, G.
title Presence of charcoal as evidence of paleofires in the Claromecó Basin, Permian of Gondwana, Argentina: Diagenetic and paleoenvironment analysis based on coal petrography studies
title_short Presence of charcoal as evidence of paleofires in the Claromecó Basin, Permian of Gondwana, Argentina: Diagenetic and paleoenvironment analysis based on coal petrography studies
title_full Presence of charcoal as evidence of paleofires in the Claromecó Basin, Permian of Gondwana, Argentina: Diagenetic and paleoenvironment analysis based on coal petrography studies
title_fullStr Presence of charcoal as evidence of paleofires in the Claromecó Basin, Permian of Gondwana, Argentina: Diagenetic and paleoenvironment analysis based on coal petrography studies
title_full_unstemmed Presence of charcoal as evidence of paleofires in the Claromecó Basin, Permian of Gondwana, Argentina: Diagenetic and paleoenvironment analysis based on coal petrography studies
title_sort presence of charcoal as evidence of paleofires in the claromecó basin, permian of gondwana, argentina: diagenetic and paleoenvironment analysis based on coal petrography studies
url http://hdl.handle.net/20.500.12110/paper_22142428_v14_n_p121_Arzadun
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AT cisternasme presenceofcharcoalasevidenceofpaleofiresintheclaromecobasinpermianofgondwanaargentinadiageneticandpaleoenvironmentanalysisbasedoncoalpetrographystudies
AT cesarettinn presenceofcharcoalasevidenceofpaleofiresintheclaromecobasinpermianofgondwanaargentinadiageneticandpaleoenvironmentanalysisbasedoncoalpetrographystudies
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