Previous studies showed that the Earth’s lower mantle is a sluggish portion with no exciting action, but new findings proved otherwise. It has deep layers that flow actively and deforms at certain zones.
Traditional beliefs say that the most complicated action is happening in the upper part and only lasts for about 400 miles before it slows down and reaches a much slower area. However, a new study shows that this is not what is really happening especially in the deep oceans.
What Makes The Earth’s Mantle?
Earth’s mantle is made of soft bent and twisted solid hot rock divided into two sections. Both layers have distinct characteristic classifying it from the other. The lower part is a little over 400 miles deep from the surface.
Findings of the Study
The researchers focused on subduction zones. This is the area where oceanic crust aims to reach the core directly as it goes below the crust and passes through the mantle. Using the planet’s seismic activity, the team was able to know what is happening in the different parts of the planet and what it is made of.
They looked at changes in wave and speed of flow. They want to further understand the activities of the mantle.
The outcome showed that it is surprisingly aggressive at the deep oceans. The study also discovered a section called the dislocation creep which causes the deformation in crystals. They limited their study to two locations only so further research is needed to identify if this section has been widespread on the planet. It indicates that the planet is cooling faster than expected.
Studying the parts of the Earth may help explain why there is life on our planet and none in others. The flow in planets varies greatly which says a lot about the planet’s ecosystem.