The book I referenced in post 37 is a modern update to Darwin's original work that includes modern findings that respectfully add to those revealed by Darwin.
One modern finding is that "the summit of mount Everest is formed of rocks made in a shallow sea."
Ammonite fossils have, in fact, been brought back from the very top hundreds of feet of Mt Everest. They were originally deposited in an ocean between the Indian plate and the Eurasian plate. When the plates collided, pushing up what are now the Himalayas, the sedimentary layers were fractured, faulted and pushed up.