List of rift valleys. Help please please please!?

In order to be a rift valley there needs to be a substantial craton upon which rifting can occur. Examples: Great Rift Valley of East Africa. Rift valley in Antarctica. Rio Grande Rift Valley in southwestern United States and northern Mexico. Rhine Graben Rift Valley of Europe. Lake Baikal Rift Valley of central Asia. These are all on continents. New Zealand is a pair of two mid-sized islands. No rift valley is possible there.