Short-lived volcanic pulses from 201 million years-old rocks hint at anthropogenic-scale CO2 degassing events. New models reveal the impact of exceptional magmatic activity on the end-Triassic climate and environment, leading to a devastating mass extinction event. The international collaborative study published in Global and Planetary Change was led by CEED postdoc Manfredo Capriolo.
The CEED blog
A new study in Nature Communications demonstrates that carbon release from the Karoo Large Igneous Province (LIP) in southern Africa was responsible for major carbon cycle changes during the Toarcian crisis around 183 million years ago. The Norwegian-French collaboration, led by CEED postdoc Thea Hatlen Heimdal, used a numerical carbon cycle model and found that the release of 20,500 billion tonnes of carbon from the Karoo LIP replicates proxy data for climate change from geological records.
New study out today in Science Advances on the Paleocene-Eocene Thermal Maximum (PETM), a time 55.9 million years ago, when the Earth experienced some of warmest climatic conditions in geological history. This new study shows that there was a large increase in continental erosion in response to the warmer and wetter conditions. The increased sediment flux in rivers helped to capture and bury carbon in the oceans, stabilizing the climate again.
At the crushing pressures of the Earth’s lower mantle electrons were long ago predicted to undergo a quantum change. But it had escaped geophysical detection for decades, until now. A study in Nature Communications found the signature by studying the coldest and hottest regions, and suggests that the inside of our planet is more complex than we thought.
Direct evidence of abundant methane degassing has been detected in 201 million year-old rocks emplaced during magmatic activity contemporaneous with the end-Triassic mass extinction. This process likely contributed to severe climate change during this time. The study, published this week in Nature Communications, has been carried out by an international research team, including Manfredo Capriolo (lead author) and Sara Callegaro from CEED.
The CEED blog covers some behind-the-scenes about our latest research and activities. The contributors are a mix of students and staff from The Centre for Earth Evolution and Dynamics, Dept. of Geosciences, University of Oslo, Norway.