In the case of this rugose coral, however, the silica has taken on a different crystalline form during the fossilization and diagenesis process, it forms Chalcedony and appear as this unique pattern ...

The effect of diagenesis on the reservoir quality of Xujiahe tight gas ... Some principal aspects of diagenetic process in sedimentary basins. Sedimentary Geology 301: 1–14. Bloch S, Lander RH and ...

Colin Metcalf, overseas consultant for the firm, said: "What we are trying to do is speed up the natural phenomena of diagenesis, which is the process that continually hardens the ground until it ...