The key driving mechanism of atmospheric CO₂ variations in the Cenozoic remains controversial. This paper analyzes three stages of collision-related magmatism in Tibet, corresponding to three major stages of atmospheric CO₂ variations. Geochemical data for these magmatic rocks inform a model calculating the continental collision-induced CO₂ emission flux. The correlation between modeled CO₂ emission rates and the global atmospheric CO₂ curve supports the hypothesis that the India-Asia collision was the primary driver of Cenozoic atmospheric CO₂ changes.
Publisher
Nature Communications
Published On
Jun 23, 2021
Authors
Zhengfu Guo, Marjorie Wilson, Donald B. Dingwell, Jiaqi Liu
Tags
Cenozoic
CO₂ variations
magmatism
Tibet
continental collision
geochemical data
atmospheric changes
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