31. A . That we live on a plate boundary . 32. This once-active divergent plate boundary became the passive, trailing edge of westward moving North America. 33. This really is a new type of plate boundary . 34. The second phase migrated significantly further down-dip and to the south, along the plate boundary . 35. The Tonga Trench is a convergent plate boundary . 36. As a convergent plate boundary , the trench forms part of the boundary between two tectonic plates. 37. In particular, the Plate Boundary Observatory ( PBO ) provides geodetic imaging of plate boundary deformation. 38. The magnitude 7.9 earthquake was also a result of thrust faulting on the same plate boundary . 39. The Bollons Seamount has been shown to be a site of extensive Cretaceous-era plate boundary nearby. 40. In particular, the Plate Boundary Observatory ( PBO ) provides geodetic imaging of plate boundary deformation.
