Context: According to geologist Stefan Schmid, because the Western Alps underwent a metamorphic event in the Cenozoic Era while the Austroalpine peaks underwent an event in the Cretaceous Period, the two areas show distinct differences in nappe formations. Flysch deposits in the Southern Alps of Lombardy probably occurred in the Cretaceous or later.

Question: What is Stefan Schmid's profession?
Answer: geologist

Question: What happened to the Western Alps during the Cenozoic Era
Answer: a metamorphic event

Question: When did the Austroalpine peaks undergo their event?
Answer: the Cretaceous Period

Question: The Western Alps and the Austroalpine peaks show distinct differences in what?
Answer: nappe formations

Question: When did Flysch deposits probably occur in the Southern Alps of Lombardy?
Answer: Cretaceous