Hosted on MSN1mon
Scientists find ancient 250-million-year-old seafloor from the time of dinosaurs hidden in Earth’s mantle
In the process, they discovered a thickened section of the mantle transition zone, located about 410 to 660 kilometers below the Earth’s surface. This zone separates the upper and lower mantles ...
ScienceAlert on MSN7d
Diamond From 400 Miles Deep Reveals a Water-Rich Environment
"The occurrence of ringwoodite together with the hydrous phases indicate a wet environment at this boundary," a team of ...
Seismic anisotropy in the deep mantle could partly be derived from the deformation of hydrous phase D
To investigate this, a team of researchers in Japan performed well-controlled deformation experiments on phase D aggregates ...
Seismic study reveals ancient 'islands' deep within Earth's mantle
Deeply hidden in Earth's mantle there are two huge "islands" the size of a continent. New research from Utrecht University ...
Claims for the world’s deepest earthquake challenged by new analysis
The magnitude 7.9 Bonin Islands earthquake sequence, which ruptured deep within the earth near the base of the upper mantle, did not include an aftershock that extended to record depths into the lower ...
Nature1mon
Layer cake or plum pudding?
the effects of water may keep the transition zone enriched in trace elements 10, and a concentration of trace elements may exist in a 'magma ocean' that has always existed above the core–mantle ...