| Here the Papua New Guinea continental crust appears to be underthrusting the adjacent marginal basin and obduction of the ophiolite is occurring in an uphill direction. |
| Ongoing accretion at a subduction zone, and the obduction of intact ophiolite slabs, are not considered to be collision. |
| However, this age could equally relate to post obduction metamorphism. |
| Late Cretaceous obduction of ophiolite complexes onto the Indian shield has also been reported from Pakistan. |
| Previously, there has been disagreement over the direction of obduction of the ophiolite and the vergence of structures. |
| However, even in the absence of tectonic boundary loads, ophiolitc obduction imposes significant stresses on the flexed plate. |
