At these times, plate boundaries and motions changed, probably because of major collision events.
The 45 Ma plate reorganisation may be related to India–Asia collision, although some important intra-Pacific events, such as voluminous Eocene boninite magmatism, seem to be older and require other causes.
Further, west, the movement of Australia northwards caused rotations of blocks and accretion of microcontinental fragments to SE Asia. will be delivered to you immediately after you complete your order.For more information on delivery for electronic products, click here.The Ontong Java Plateau collided with the Melanesian Arc.
These collisions caused a major change in the character of plate boundaries between about 25 and 20 Ma.
The New Guinea passive margin collided with the East Philippines–Halmahera–South Caroline Arc system.