Magma

Chemistry

Large igneous province

Mantle (geology)

Flood basalt

Astrobiology

Physics

Population

Geology

Climate change

Organic chemistry

Geochemistry

Deccan Traps

Tectonics

Volcano

Demography

Kimberlite

Volcanism

Basalt

Magmatism

Extinction event

Igneous rock

Outgassing

Sociology

Earth science

Oceanography

Paleontology

Biological dispersal

Proceedings of the National Academy of Sciences

Significance Carbon outgassing from Large Igneous Provinces has been invoked as a mechanism to drive major climate shifts throughout Earth’s history. However, the lack of direct constraints on evolving carbon release from magmas in these provinces represents a major challenge for understanding the relationship between magmatism and environmental change. This paper presents constraints on CO 2 contents of early Deccan Traps lavas based on studies of olivine-hosted melt inclusions. We use these data to evaluate links between early Deccan carbon outgassing and an episode of pronounced warming just prior to the end-Cretaceous mass extinction. By accounting for evolving CO 2 budgets and degassing from intrusive magmas, this work quantitatively relates magma emplacement, outgassing, and observed changes in paleoclimate.

Reconciling early Deccan Traps CO <sub>2</sub> outgassing and pre-KPB global climate

Reconciling early Deccan Traps CO 2 outgassing and pre-KPB global climate

Reconciling early Deccan Traps CO ₂ outgassing and pre-KPB global climate