Figure 5
Element distribution in the fossil sample ‘Ro-13.3’ (‘Nymphaea nymphaeoides’). (a) Combined SEM topographic contrast and element-mapping image showing Si in red and C in green colours. Small globules of organic material (e.g., Spot 2) are difficult to recognise between other organic particles. (b) Detailed BSE image of a section of (a) illustrating the grainy opal-like structure of the background sediment. (c) EDX spectra show the composition of black granules (Spot 1: C, O, Fe, S), small globules (Spot 2: mainly C), and background sediment (Spot 3: Si, O). Scale bars: (a,b) = 40 µm.
