This phenomenon was first proposed by Harry Hess, and it is currently explained by convection in the asthenosphere.
The Morley-Vine-Matthews Hypothesis cited geomagnetic reversals in igneous rock as proof of this phenomenon. This phenomenon generally involves passive upwelling from the mantle and is not found at active margins or convergent boundaries. This phenomenon was first proposed by Harry Hess, and it is currently explained by convection in the asthenosphere. For 10 points, name this occurrence in which tectonic plates are formed at mid-ocean ridges, notably occurring at the Mid-Atlantic Ridge.
The Morley-Vine-Matthews Hypothesis cited geomagnetic reversals in igneous rock as proof of this phenomenon.
Seafloor {Spreading}