气候变化领域集成服务门户(CCPortal): Magmatic Forcing of Cenozoic Climate?

CCPortal

DOI	10.1029/2018JB016460
	Magmatic Forcing of Cenozoic Climate?
	Sternai P.; Caricchi L.; Pasquero C.; Garzanti E.; van Hinsbergen D.J.J.; Castelltort S.
发表日期	2020
ISSN	21699313
卷号	125 期号:1
英文摘要	Established theories ascribe much of the observed long-term Cenozoic climate cooling to atmospheric carbon consumption by erosion and weathering of tectonically uplifted terrains, but climatic effects due to changes in magmatism and carbon degassing are also involved. At timescales comparable to those of Milankovitch cycles, late Cenozoic building/melting of continental ice sheets, erosion, and sea level changes can affect magmatism, which provides an opportunity to explore possible feedbacks between climate and volcanic changes. Existing data show that extinction of Neo-Tethyan volcanic arcs is largely synchronous with phases of atmospheric carbon reduction, suggesting waning degassing as a possible contribution to climate cooling throughout the early to middle Cenozoic. In addition, the increase in atmospheric CO2 concentrations during the last deglaciation may be ascribed to enhanced volcanism and carbon emissions due to unloading of active magmatic provinces on continents. The deglacial rise in atmospheric CO2 points to a mutual feedback between climate and volcanism mediated by the redistribution of surface masses and carbon emissions. This may explain the progression to higher amplitude and increasingly asymmetric cycles of late Cenozoic climate oscillations. Unifying theories relating tectonic, erosional, climatic, and magmatic changes across timescales via the carbon cycle offer an opportunity for future research into the coupling between surface and deep Earth processes. ©2019. American Geophysical Union. All Rights Reserved.
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/188027
作者单位	Department of Earth Sciences, University of Geneva, Geneva, Switzerland; Department of Earth and Environmental Sciences, University of Milano-Bicocca, Milan, Italy; Department of Earth Sciences, Utrecht University, Utrecht, Netherlands
推荐引用方式 GB/T 7714	Sternai P.,Caricchi L.,Pasquero C.,et al. Magmatic Forcing of Cenozoic Climate?[J],2020,125(1).
APA	Sternai P.,Caricchi L.,Pasquero C.,Garzanti E.,van Hinsbergen D.J.J.,&Castelltort S..(2020).Magmatic Forcing of Cenozoic Climate?.Journal of Geophysical Research: Solid Earth,125(1).
MLA	Sternai P.,et al."Magmatic Forcing of Cenozoic Climate?".Journal of Geophysical Research: Solid Earth 125.1(2020).