Location:
Scientists detected a molten layer about 100 miles beneath Earth s surface.
Global Discovery:
This finding suggests the presence of a new layer of Earth s interior that is globally distributed.
Influence on Plate Tectonics:
While previously thought to play a significant role, the molten layer s impact on mantle flow is found to be minor.
Mantle Dynamics:
The study sheds light on the internal dynamics of the planet, emphasizing the importance of the physical properties of the molten layer.
Previous Understanding:
Earlier, scientists believed molten rock existed in patches, but this study reveals its widespread presence.
Asthenosphere:
The molten layer is part of the asthenosphere, which resides under Earth s tectonic plates in the upper mantle.
Soft Boundary:
The asthenosphere forms a relatively soft boundary, allowing tectonic plates to move through the mantle.