Marine Magnetic Anomalies - Quantitative Plate Tectonics - page 164

Fig. 5.18 Crossing points for anomaly 2A ( blue dots )
in the example of Fig. 5.17 . Projection lines, where the
magnetic data of Fig. 5.17 have been projected, are shown
as dotted lines . There are seven conjugate groups of
crossings and five conjugate groups of fracture zone points
that can be used to determine the finite reconstruction

pole and rotation angle at anomaly 2A time (2.58 Ma).
Note that segments with only one crossing on one side
cannot be used in the fitting procedure. Therefore, the
resulting isochron geometry along these segments will be
unconstrained

Fig. 5.19 Complementary data set of crossing points ( red dots ) for the example of Fig. 5.18