Seismic mapping of North America has revealed that an ancient slab of crust buried beneath the Midwest is causing the crust ...

Shear waves split into fast and slow waves when they travel through elastically anisotropic media, and the anisotropy of the seismic velocity ... of the lower mantle transition zone.

A fascinating new study reveals that a massive chunk of Earth’s crust, buried deep beneath the Midwest, is slowly pulling ...

The deep roots of Earth's oldest continents have long been thought to be unshakable. But a new seismic discovery suggests that even these stable landmasses can change. Beneath the center of North ...

One of these slabs currently straddles the boundary between the mantle transition zone and the ... has a high seismic velocity (dark blue) compared to its surroundings. | Credit: Hua et al.

Seismic imaging reveals a funnel-shaped ... drip-like structures extending from the base of the craton into the mantle transition zone, an area roughly 400 to 700 kilometres below Earth's surface.

(2020), Seismic evidence of glacial deposits inhibiting ... Zhang, Z., A sporadic low-velocity layer atop the western U.S. mantle transition zone and short-wavelength variations in transition zone ...

Between depths of 410 and 660 kilometers lies the mantle transition zone ... large-scale ocean bottom seismic experiment conducted at an Atlantic subduction zone," said Dr. Catherine Rychert ...

One of these slabs currently straddles the boundary between the mantle transition zone and the ... has a high seismic velocity (dark blue) compared to its surroundings. | Credit: Hua et al.

One of these slabs currently straddles the boundary between the mantle transition zone and the lower mantle roughly 410 miles (660 km) beneath the Midwest. Dubbed the "Farallon slab" and first ...