2 ms·
The theory being something along the lines of "Large mantle plume under Siberia suddenly freed when surface crust is fractured in numerous places by extensive a
by mapt 2y ago
The theory being something along the lines of "Large mantle plume under Siberia suddenly freed when surface crust is fractured in numerous places by extensive antopodal convergence of shockwaves from the Wilkes Land impactor".
- jordanb 2y agoIf the Wilkes Land formation is an impact crater (not proven) it's 2x the size of Chicxulub. You don't need any vulcanization in Siberia to explain a mass extinction. But it's not proven to be an impact crater, nor is its age determined with any specificity. There's the lack of Iridium, and Erwin also had complaints about the modeling for an "antopodal convergence crack."