CompuServe Messages

Doug >>The Scientific American of Oct 1993 article on large igneous provinces shows the Broken Ridge plateau and the 90-East ridge as being such. It implies the Kerguelen plateau and the Broken Ridge plateau formed from a single mantle plume. I take this to mean the plume formed a hot spot and erupted at the southeast Indian spreading ridge<< I agree that they were mated at one time..it follows that they are equal distance from the Mid Ridge. >>Forming something like Iceland, which was later split by the ridge. Perhaps the hotspot actually arrived quietly, built the 90-East ridge over time, then got hotter and produced the plateaus? This would be the reverse of normal hotspot arrival protocol.<< The key here is the geological table included in the formation. If it has the layers of time then it was crust regardless of what happened in the course of time. >>I also recall reading elsewhere that Kerguelen includes some continental material; perhaps a New Zealand-like fragment happened to be near the line of fire. << It definitely appears to be a crustal section. I actually expect geological table in all plateau's of any size. Ha there been any drilling and cores taken in the Hawaiian Islands? Kamron