How Large Igneous Provinces affect global climate
Large Igneous Provinces (LIPs) can have a significant global climatic effect as monitored by sedimentary trace and isotopic compositions that record paleo-seawater/atmosphere variations. Improved U-Pb dating (with better than 0.1 Myr resolution) for several LIPs is confirming a long-proposed mass ex...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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fttomskstateuniv:vtls:000629895 2023-05-15T17:51:56+02:00 How Large Igneous Provinces affect global climate sometimes cause mass extinctions and represent natural markers in the geological record Ernst Richard E. Youbi Nasrrddine 2017 https://doi.org/10.1016/j.palaeo.2017.03.014 http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000629895 eng eng Palaeogeography palaeoclimatology palaeoecology. 2017. Vol. 478. P. 30-52 крупные изверженные провинции глобальный климат глобальное потепление ледниковый период статьи в журналах info:eu-repo/semantics/article 2017 fttomskstateuniv https://doi.org/10.1016/j.palaeo.2017.03.014 2019-05-17T20:02:01Z Large Igneous Provinces (LIPs) can have a significant global climatic effect as monitored by sedimentary trace and isotopic compositions that record paleo-seawater/atmosphere variations. Improved U-Pb dating (with better than 0.1 Myr resolution) for several LIPs is confirming a long-proposed mass extinction-LIP link. The most dramatic climatic effect is global warming due to greenhouse-gases from LIPs. Subsequent cooling (and even global glaciations) can be caused by CO2 drawdown through weathering of LIP-related basalts and/or by sulphate aerosols. Additional kill mechanisms that can be associated with LIPs include oceanic anoxia ocean acidification sea level changes toxic metal input essential nutrient decrease producing a complex web of catastrophic environmental effects. Notably the size of a LIP is not the only important factor in contributuing to environmental impact. Of particular significance are the rate of effusion and the abundance of LIP-produced pyroclastic material and volatile fluxes that reach the stratosphere. While flood basalt degassing (CO2 SO2 halogens) is important (and is also from associated silicic volcanism) a significant amount of these gases are released from volatile-rich sedimentary rocks (e.g. evaporites and coal horizons) heated by the intrusive component of LIPs. Feedbacks are important such as global warming leading to destabilization of clathrates consequent release of further greenhouse gases and greater global warming. In the broadest sense LIPs can affect (or even induce) shifts between Icehouse Greenhouse and Hothouse climatic states. However the specific effects their severity and their time sequencing is specific to each LIP. Based on the robust array of environmental effects due to LIPs as demonstrated in the Phanerozoic record it is suggested that LIP events represent useful time markers in the Precambrian Era as proxies for some significant global environmental changes that are preserved in the sedimentary record. Article in Journal/Newspaper Ocean acidification Tomsk State University Research Library Palaeogeography, Palaeoclimatology, Palaeoecology 478 30 52 |
institution |
Open Polar |
collection |
Tomsk State University Research Library |
op_collection_id |
fttomskstateuniv |
language |
English |
topic |
крупные изверженные провинции глобальный климат глобальное потепление ледниковый период |
spellingShingle |
крупные изверженные провинции глобальный климат глобальное потепление ледниковый период Ernst Richard E. Youbi Nasrrddine How Large Igneous Provinces affect global climate |
topic_facet |
крупные изверженные провинции глобальный климат глобальное потепление ледниковый период |
description |
Large Igneous Provinces (LIPs) can have a significant global climatic effect as monitored by sedimentary trace and isotopic compositions that record paleo-seawater/atmosphere variations. Improved U-Pb dating (with better than 0.1 Myr resolution) for several LIPs is confirming a long-proposed mass extinction-LIP link. The most dramatic climatic effect is global warming due to greenhouse-gases from LIPs. Subsequent cooling (and even global glaciations) can be caused by CO2 drawdown through weathering of LIP-related basalts and/or by sulphate aerosols. Additional kill mechanisms that can be associated with LIPs include oceanic anoxia ocean acidification sea level changes toxic metal input essential nutrient decrease producing a complex web of catastrophic environmental effects. Notably the size of a LIP is not the only important factor in contributuing to environmental impact. Of particular significance are the rate of effusion and the abundance of LIP-produced pyroclastic material and volatile fluxes that reach the stratosphere. While flood basalt degassing (CO2 SO2 halogens) is important (and is also from associated silicic volcanism) a significant amount of these gases are released from volatile-rich sedimentary rocks (e.g. evaporites and coal horizons) heated by the intrusive component of LIPs. Feedbacks are important such as global warming leading to destabilization of clathrates consequent release of further greenhouse gases and greater global warming. In the broadest sense LIPs can affect (or even induce) shifts between Icehouse Greenhouse and Hothouse climatic states. However the specific effects their severity and their time sequencing is specific to each LIP. Based on the robust array of environmental effects due to LIPs as demonstrated in the Phanerozoic record it is suggested that LIP events represent useful time markers in the Precambrian Era as proxies for some significant global environmental changes that are preserved in the sedimentary record. |
format |
Article in Journal/Newspaper |
author |
Ernst Richard E. Youbi Nasrrddine |
author_facet |
Ernst Richard E. Youbi Nasrrddine |
author_sort |
Ernst |
title |
How Large Igneous Provinces affect global climate |
title_short |
How Large Igneous Provinces affect global climate |
title_full |
How Large Igneous Provinces affect global climate |
title_fullStr |
How Large Igneous Provinces affect global climate |
title_full_unstemmed |
How Large Igneous Provinces affect global climate |
title_sort |
how large igneous provinces affect global climate |
publishDate |
2017 |
url |
https://doi.org/10.1016/j.palaeo.2017.03.014 http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000629895 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Palaeogeography palaeoclimatology palaeoecology. 2017. Vol. 478. P. 30-52 |
op_doi |
https://doi.org/10.1016/j.palaeo.2017.03.014 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
478 |
container_start_page |
30 |
op_container_end_page |
52 |
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1766159225911771136 |