A deep drillcore from the Morokweng impact structure, South Africa: petrography, geochemistry, and constraints on the crater size
The Morokweng impact structure in South Africa was formed 145 Ma ago, at the time of the minor mass extinction that marks the Jurassic-Cretaceous boundary. Previous size estimates for the Morokweng impact structure ranged between 70 and 340 km, and those
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|Source:||Earth and Planetary Science Letters|
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