Let’s see if u and I can get on the same page...
Are you seeing what I am seeing?
http://blavatskyarchives.com/midatlanticridge/4.gif
Then look here...
http://upload.wikimedia.org/wikipedia/commons/6/69/World_Distribution_of_Mid-Oceanic_Ridges.gif
Time to revisit the concept of Lemuria?
If you follow the ridge line to it's near end points there has been large quakes since april in Jan Mayan, at it's norther extent on the mid atlantic ridge, course up through the red sea. Now the eruption of Nabro becomes even more interesting and of course on the eastern extent of the Pacific rise ending at our most latest quake and of course the action at the very end of the spread at Salton Sea.
Now Errant, take the thought of your gravity maps....and well things begin to get clearer.
Remember as a kid when we got a brand new coated rubber baseball. How clean and fresh the covering was until you either squeezed it or hit it with a wiffle ball bat. The cracks would appear and transverse it's surface area. The more you played with it the more diffuse the cracks would become on the surface coat and eventually lead to actually cracking of the rubber.
I am thinking that theoretically the process of up-heaving and subduction at times can be quicker than Millenniums....more to come!