March 22, 2023

Double Whammy: Two-Pronged Kill Mechanism in Triassic Era Extinction Event

Curtin-led research study has actually revealed an increase in levels of both acid and hydrogen sulfide in the ocean was the double whammy that erased marine life throughout a mass extinction occasion 201 million years ago.
Lead author, Curtin PhD graduate Dr. Calum Peter Fox, from the WA-Organic and Isotope Geochemistry Centre (WA-OIGC) in Curtins School of Earth and Planetary Sciences, stated the research exposed the twin procedures that integrated to the end the Triassic age, paving the method for the development of dinosaurs in the Jurassic period.

” The end-Triassic occasion saw fast increases in CO2 due to a surge in volcanic activity, which is comprehended to have actually triggered unfavorable conditions for life leading to mass termination, however, the several chauffeurs for death throughout this duration were not formerly known,” Dr. Fox stated.
” By studying microscopic fossils maintained in rock in the Bristol Channel Basin, in the southwestern United Kingdom, we identified the twin systems accountable for the mass termination.
” These were a fatal mix of ocean acidification, which inhibited growth of all marine life utilizing calcium carbonate to produce shells or body parts such as corals, mussels, and oysters, and increasing levels of hydrogen sulfide in the ocean, which was incredibly hazardous for all marine life.”
Co-author John Curtin Distinguished Professor Kliti Grice, also from WA-OIGC in Curtins School of Earth and Planetary Sciences, stated the research study provided important and detailed information of the history of our ever-evolving planet.
” The revelations about the cause of previous marine terminations will assist us comprehend the current worldwide warming crisis and how we can secure our weakening ecosystems and environment,” Professor Grice said.
” In order to help understand how our environment and ecosystems might change throughout this event, we should investigate those in the past.
” There is still much to learn more about mass extinction occasions and studying these disruptive time intervals further will notify us more about the history of our Earth, however likewise what climatic changes we can anticipate moving on as CO2 levels continue to increase.”
Referral: “Two-pronged kill mechanism at the end-Triassic mass termination” by Calum P. Fox, Jessica H. Whiteside, Paul E. Olsen, Xingqian Cui, Roger E. Summons, Erdem Idiz and Kliti Grice, 5 January 2022, Geology.DOI: 10.1130/ G49560.1.
This research, led by Curtin University and moneyed by the ARC, was carried out in cooperation with scientists at the University of Southampton, Lahmont-Doherty Earth Observatory, MIT, and Oxford University. Dr. Fox did the research as part of his PhD research studies at Curtin and is now at Khalifa University.