Talk:Mid-Tertiary ignimbrite flare-up

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Clarification is needed on what is meant by "the mantle wedge was opened up".ZFT (talk) 23:15, 13 March 2014 (UTC)

Cause of the Laramide orogeny
The cause of the Laramide orogeny being shallow subduction of the Farallon plate is disputed. Increasingly, collision of a large archipelago or "ribbon continent," with subsequent northward translation, is being advanced by N. American cordillera geologists as the cause of the Laramide and Sevier orogenies.

At the very least, the shallow subduction theory should not be presented as absolute fact. 97.115.146.255 (talk) 23:52, 17 September 2023 (UTC)
 * Any sources? Ruslik_ Zero 20:02, 18 September 2023 (UTC)