The enthusiasm geologists show for adding new words to their conversation is, if anything, exceeded by their affection for the old. They are not about to drop 'granite.' They say 'granodiorite' when they are in church and 'granite' the rest of the week.
John McPheeIf by some fiat I had to restrict all this writing to one sentence, this is the one I would choose: The summit of Mt. Everest is marine limestone.
John McPhee