During the Cretaceous, however, an ocean basin existed in this area, either as a remnant ocean that had escaped Jurassic obduction or as a small Cretaceous pull-apart basin. |
Ongoing accretion at a subduction zone, and the obduction of intact ophiolite slabs, are not considered to be collision. |
However, even in the absence of tectonic boundary loads, ophiolitc obduction imposes significant stresses on the flexed plate. |
However, this age could equally relate to post obduction metamorphism. |
The metamorphism is related not only to overthrusting and the obduction of oceanic crust but also to a subduction zone setting. |
Previously, there has been disagreement over the direction of obduction of the ophiolite and the vergence of structures. |