The map and velocity diagram above shows the velocities of three plates in the HS3-NUVEL-1A plate model. 

If the P1-P2 boundary is a trench, plate P1 subducts.

If the P2-P3 boundary is a trench, plate P2 subducts.

If the P1-P3 boundary is a trench, plate P1 subducts.

 

Determine the type of boundary for each of the three plate boundaries, and draw relative motion arrows on each.

Is the triple junction stable?

How will the triple junction migrate with respect to the three plates?



 


The map and velocity diagram above shows the velocities of three plates in the HS3-NUVEL-1A plate model. 

If the P1-P2 boundary is a trench, plate P1 subducts.

If the P2-P3 boundary is a trench, plate P2 subducts.

If the P1-P3 boundary is a trench, plate P1 subducts.

 

 

Consider just the trend of the plate boundary at the triple junction.  Determine the type of boundary for each of the three plate boundaries, and draw relative motion arrows on each.

Is the triple junction stable?



 

Actual locations, depths and ages