Before revision: Oceanic mantle, crust and overlying sediments were subducted, and rapidly heated, and H-O-C-rich vapors released fluids during heating, at temperatures below 650 °C and depths of 100 km.
After revision: Oceanic mantle, crust and overlying sediments were subducted, and rapidly heated, and H-O-C-rich vapours released fluids during heating, at temperatures below 650 °C and depths of 100 km.