The length of the Devonian period / John R. Richards -- Granitoid ages in a Palaeozoic back-arc basin / J.R. Richards and O.P. Singleton -- Application of geochronologic dating techniques in fault ...

Figure 2 shows the X-ray diffractograms of (a) white (WP) and (b) cream phyllite (CP) as received and their 2, 4 and 6 h of calcination products. Most of the kaolinite related peaks disappear for the ...