Blocking temperature muscovite

Fig. 4.16 The Granite Harbor Intrusives of the Morozumi Remge in the Wilson Terrane crystaUized between 510 and 520 Ma and then reached the blocking temperature of biotite and muscovite between 460 and 490 Ma after coofing for about 35 million years fiom 515 to 480 Ma (Data from Kreuzer et al. 1981, 1987)...

The K-Ar dates of the Wilson Gneisses of the Lanterman Range in Appendix 4.8.3.12 and in Fig. 4.18 indicate that biotite, muscovite, and hornblende reached their blocking temperature for radiogenic Ar... 

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