Fig. 3

Log-log plot of plate number (largest to smallest) against characteristic plate length (square root of area, in km). I have made the assumption that the smaller plates starting at plate 81 are caused by a different process than the larger plates, and the lower graph assumes that these plates are renumbered starting from 1. Straight line fits are given in colored lines with equations in the appropriate colors. Red is for the seven largest plates. Blue is for the next group of 73 plates. Green is for the smallest group of 79 plates. These 79 plates are renumbered from 1 to 79. The largest 32 of these plates is fit by a straight (light blue) line. The light orange equation and line is from the results of Koehn et al. (2008). The data are shown by the thin black lines, and for the renumbered set, the individual data are shown by black dots joined by a thin black line