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THE FRAMEWORK OF PLATE TECTONICS 117
Figure 5.26 (a) Triple junction between three trenches separating plates A, B, and C. (b) Its representation in velocity
space, illustrating its instability. (c) The positions plates B and C would have reached if they had not been consumed are
shown as dashed lines. (d) Stable configuration of a trench–trench–trench triple junction. (e) Its representation in
velocity space. ((a) and (c) redrawn from McKenzie & Morgan, 1969, with permission from Nature 224, 125–33.
Copyright © 1969 Macmillan Publishers Ltd).
