The conventional view that marine magnetic anomalies arose in the upper, extrusive layer of the oceanic crust requires a rethink because perfectly normal magnetic anomalies arise at megamullions, suggesting that the lower part of the ocean crust contains a substantial magnetic signature.
The conventional view that marine magnetic anomalies arose in the upper, extrusive layer of the oceanic crust requires a rethink because perfectly normal magnetic anomalies arise at megamullions, where the crust has been stripped away. This suggesss that the lower part of the ocean crust contains a substantial magnetic signature.