Cargando…

Paleo-Wildfires and Their Paleoclimatic Effects in Early Permian Coal in the Southern North China Basin

[Image: see text] Paleo-wildfires can help elucidate the transition trends of Earth from “icehouse” to “greenhouse,” thereby allowing us to forecast the current changes associated with wildfires of this era. In this study, the early Permian Shanxi Formation in the Pingdingshan coalfield, located sou...

Descripción completa

Detalles Bibliográficos
Autores principales: Gao, Di, Guo, Huiling, Wang, Juan, Shi, Yi, Chen, Di
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2023
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10339330/
https://www.ncbi.nlm.nih.gov/pubmed/37457456
http://dx.doi.org/10.1021/acsomega.3c00127
_version_ 1785071822067204096
author Gao, Di
Guo, Huiling
Wang, Juan
Shi, Yi
Chen, Di
author_facet Gao, Di
Guo, Huiling
Wang, Juan
Shi, Yi
Chen, Di
author_sort Gao, Di
collection PubMed
description [Image: see text] Paleo-wildfires can help elucidate the transition trends of Earth from “icehouse” to “greenhouse,” thereby allowing us to forecast the current changes associated with wildfires of this era. In this study, the early Permian Shanxi Formation in the Pingdingshan coalfield, located south of the North China Basin, was selected as a study site. Based on data on inertinite content, inertinite reflectance, nine polycyclic aromatic hydrocarbons (PAHs), paleo-wildfires, and their paleoclimate effect during the early Permian coal formation were systematically analyzed. The inertinite content in coal in the study area ranged from 9.76 to 29.65%, with an average of 19.32%. Meanwhile, the average inertinite reflectance values ranged from 2.41–4.74%, with an average of 2.75%. PAHs in the study area were mainly tricyclic and tetracyclic; the contents of fluorene, phenanthrene, pyrene, bypyrene, benzo[b]fluoranthene, and benzo[e]pyrene were higher than those of other PAHs in the same stratum. The total concentration of PAHs varied widely between layers (3601–21,894 ng/g). The presence of paleo-wildfires was confirmed by the contents of inertinite and PAHs. It can be concluded that paleo-wildfires in the study area were dominated by surface fires at low and medium temperatures based on the combustion equation. The oxygen content in the paleo-atmosphere of the Early Permian Shanxi Formation in the study area was 24.29%, which provided the necessary conditions for the occurrence of wildfires.
format Online
Article
Text
id pubmed-10339330
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher American Chemical Society
record_format MEDLINE/PubMed
spelling pubmed-103393302023-07-14 Paleo-Wildfires and Their Paleoclimatic Effects in Early Permian Coal in the Southern North China Basin Gao, Di Guo, Huiling Wang, Juan Shi, Yi Chen, Di ACS Omega [Image: see text] Paleo-wildfires can help elucidate the transition trends of Earth from “icehouse” to “greenhouse,” thereby allowing us to forecast the current changes associated with wildfires of this era. In this study, the early Permian Shanxi Formation in the Pingdingshan coalfield, located south of the North China Basin, was selected as a study site. Based on data on inertinite content, inertinite reflectance, nine polycyclic aromatic hydrocarbons (PAHs), paleo-wildfires, and their paleoclimate effect during the early Permian coal formation were systematically analyzed. The inertinite content in coal in the study area ranged from 9.76 to 29.65%, with an average of 19.32%. Meanwhile, the average inertinite reflectance values ranged from 2.41–4.74%, with an average of 2.75%. PAHs in the study area were mainly tricyclic and tetracyclic; the contents of fluorene, phenanthrene, pyrene, bypyrene, benzo[b]fluoranthene, and benzo[e]pyrene were higher than those of other PAHs in the same stratum. The total concentration of PAHs varied widely between layers (3601–21,894 ng/g). The presence of paleo-wildfires was confirmed by the contents of inertinite and PAHs. It can be concluded that paleo-wildfires in the study area were dominated by surface fires at low and medium temperatures based on the combustion equation. The oxygen content in the paleo-atmosphere of the Early Permian Shanxi Formation in the study area was 24.29%, which provided the necessary conditions for the occurrence of wildfires. American Chemical Society 2023-06-26 /pmc/articles/PMC10339330/ /pubmed/37457456 http://dx.doi.org/10.1021/acsomega.3c00127 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Gao, Di
Guo, Huiling
Wang, Juan
Shi, Yi
Chen, Di
Paleo-Wildfires and Their Paleoclimatic Effects in Early Permian Coal in the Southern North China Basin
title Paleo-Wildfires and Their Paleoclimatic Effects in Early Permian Coal in the Southern North China Basin
title_full Paleo-Wildfires and Their Paleoclimatic Effects in Early Permian Coal in the Southern North China Basin
title_fullStr Paleo-Wildfires and Their Paleoclimatic Effects in Early Permian Coal in the Southern North China Basin
title_full_unstemmed Paleo-Wildfires and Their Paleoclimatic Effects in Early Permian Coal in the Southern North China Basin
title_short Paleo-Wildfires and Their Paleoclimatic Effects in Early Permian Coal in the Southern North China Basin
title_sort paleo-wildfires and their paleoclimatic effects in early permian coal in the southern north china basin
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10339330/
https://www.ncbi.nlm.nih.gov/pubmed/37457456
http://dx.doi.org/10.1021/acsomega.3c00127
work_keys_str_mv AT gaodi paleowildfiresandtheirpaleoclimaticeffectsinearlypermiancoalinthesouthernnorthchinabasin
AT guohuiling paleowildfiresandtheirpaleoclimaticeffectsinearlypermiancoalinthesouthernnorthchinabasin
AT wangjuan paleowildfiresandtheirpaleoclimaticeffectsinearlypermiancoalinthesouthernnorthchinabasin
AT shiyi paleowildfiresandtheirpaleoclimaticeffectsinearlypermiancoalinthesouthernnorthchinabasin
AT chendi paleowildfiresandtheirpaleoclimaticeffectsinearlypermiancoalinthesouthernnorthchinabasin