Anthropogenic-scale CO2 degassing from the Central Atlantic Magmatic Province as a driver of the end-Triassic mass extinction

Anthropogenic-scale CO2 degassing from the Central Atlantic Magmatic Province as a driver of the end-Triassic mass extinction
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大西洋中部岩浆省人为规模的二氧化碳脱气是三叠纪末大规模灭绝的驱动因素

DOI:
10.1016/j.gloplacha.2021.103731
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发表时间:
2022
影响因子:
3.9
通讯作者:
Capriolo M
Capriolo M
中科院分区:
地球科学1区
文献类型:
--
作者:
Capriolo M

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气候和环境的影响,完全火山CO2排放量的评估期间的主要喷出阶段的中大西洋岩浆区(CAMP),这是同步的三叠纪末的大规模灭绝。CAMP火山作用发生在短暂而强烈的喷发脉冲中,每次都产生广泛的玄武熔岩流。在这里,CAMP火山CO2注入到地表系统的模拟使用碳循环的地球化学箱模型。我们的模型表明,即使可以援引正反馈现象来解释三叠纪末沉积记录中保存的碳同位素漂移,强烈和脉冲式的火山活动本身也可能导致反复的温度升高和pH值下降,分别高达5 °C和约0.2个对数单位。因此,CAMP的快速和大量的火山CO2排放,与目前的人为排放规模相似,严重影响了全球范围内的气候和环境,导致灾难性的生物后果。
The climatic and environmental impact of exclusively volcanic CO2emissions is assessed during the main effusive phase of the Central Atlantic Magmatic Province (CAMP), which is synchronous with the end-Triassic mass extinction. CAMP volcanism occurred in brief and intense eruptive pulses each producing extensive basaltic lava flows. Here, CAMP volcanic CO2injections into the surface system are modelled using a biogeochemical box model for the carbon cycle. Our modelling shows that, even if positive feedback phenomena may be invoked to explain the carbon isotope excursions preserved in end-Triassic sedimentary records, intense and pulsed volcanic activity alone may have caused repeated temperature increases and pH drops, up to 5 °C and about 0.2 log units respectively. Hence, rapid and massive volcanic CO2emissions from CAMP, on a similar scale to current anthropogenic emissions, severely impacted on climate and environment at a global scale, leading to catastrophic biotic consequences.
DOI: 10.1016/j.palaeo.2006.06.034
发表时间: 2007-02
期刊: Palaeogeography, Palaeoclimatology, Palaeoecology
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DOI: --
发表时间: 2020
期刊: Geology
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DOI: --
发表时间: 2019
影响因子: 3.9
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DOI: 10.1016/0031-0182(92)90207-l
发表时间: 1992
影响因子: 3.9
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