The team relates formation of the gold deposits to a change in plate tectonics and a major magma event about 40 million years ago. It is the most complete explanation for Carlin-type gold deposits to date.So after reading what is, to be fair, not a bad summary of what Carlin-type deposits are- though redundant for me- the press release ends with that. Five minutes wasted. Sigh. This is my theory, which is mine, and it is, as follows, mine: Brontosauruses were narrow at the end, much, much thicker in the middle, and then thinner again at the other end.