oa Molecular Records of the Triassic-Jurassic and the Eaerly Toarcian Climate Events at the Land-Sea Interface

The Triassic-Jurassic boundary and the early Toarcian are characterized by greenhouse warming, caused by the emplacement of large igneous provinces, namely the Central Atlantic Magmatic Province (CAMP, c. 201 Ma) and the Karoo-Ferrar Large Igneous Province (K-F-LIP, c. 183 Ma) ( Svensen et al., 2017 ). Rising global temperatures triggered a cascade of environmental changes and severely impacted on marine and continental ecosystems ( van de Schootbrugge et al., 2013 ). Despite similar trigger mechanisms, the two events differ in their character. Most significant, the early Toarcian record the genesis of an Oceanic Anoxic Event, while the Triassic-Jurassic boundary event lacks robust evidence for widespread shelf sea deoxygenation and organic matter accumulation ( Bergmann et al., 2021 ).