Fig. 6. Electron micrographs of Pedon B1 at the 10- to 25-cm depth (Cry1 horizon). (a) EDS dot maps showing spatial distribution of Si, Al, Mg, S, and Ca in the contact between a lutitic fragment (left) and the residue of a quemosaic (right). The length of each frame is 750 µm. (b) The diagonal marked by the arrows is the contact between the unweathered lutitic material (lower half) and the quedecal (upper half). The BSE image shows that the quedecal is much more porous than lutite, because of the decalcification process (length of bar: 100 µm).