Figure 3
Elemental mapping of a biogenic soil crust, showing a relatively uniform distribution of Si, with a few hot spots with elevated concentrations of P and Ca. Three images are the individual elemental maps and the right-hand image is the tri-colour map of Ca (red)/P (green)/S (blue), with two hot spots (A and B) marked. Scale bar = 50 µm (individual map of S is not shown). |