Residence times of internal contacts, widths, growth times and growth rates of selected quartz crystals (two of which shown in Fig. 1), as derived from Ti traverses.

aQuantity in brackets is the maximum residence time: t+2σt.bInterior growth time excludes the time estimated for the residence time for rim-interior contacts in crystals with bright-CL, high-Ti rims (Gualda et al., unpublished data); these times are short enough that interior growth rates would be unaltered even if they were neglected.cQuantity in brackets is the minimum growth rate obtained using t+2σt as time.