Project

Death from below: how linking brines, anoxia, mutation, and stratabound ore could solve the enigma of Devonian mass extinction and the World’s REE crisis

Duration
01 October 2021 → Ongoing
Funding
Regional and community funding: Special Research Fund
Research disciplines
  • Natural sciences
    • Biogeochemistry
    • Stratigraphy
    • Geology not elsewhere classified
    • Molecular evolution
Keywords
Mass extinctions sedimentary exhalative deposits Ocean Anoxic Events fossil teratology
 
Project description

Here, we test new kill-mechanisms for iconic Devonian mass-extinctions. Our nascent hypothesis suggests that formation of exhalative (sedex) Zn-Pb-Au deposits resulted in global Ocean Anoxic Events. Our novel proxy measures the geochemistry of severely malformed organic-walled fossil plankton, coinciding with the extinctions. Tracing the heavy metal contamination and stratigraphy provides a new tool to pinpoint sedex and associated REE deposits.