“We discovered how subduction works during the plate tectonic revolution in the 60s,” he said. “First, we had discovered the oceanic crust actually moves. People thought it used to just sit there, but ...

The Earth's oceanic crust covers an enormous expanse, and is mostly buried beneath a thick layer of mud that cuts it off from the surface world. Scientists now document life deep within the ...

The oldest known bit of oceanic crust is sitting at the bottom of the Mediterranean The oldest patch of undisturbed oceanic crust on Earth may lie deep beneath the eastern Mediterranean Sea ...

"We know that Earth's oceanic crust accounts for 60 percent of Earth's surface, and on average is four miles thick," said geomicrobiologist Mark Lever of Denmark's Aarhuis University, part of a ...

Thin oceanic crust is formed by decompression melting of the upper mantle at mid-ocean ridges, but the origin of the thick and buoyant continental crust is enigmatic. Juvenile continental crust ...

But the oldest oceanic crust is only about 200 million years old, as new crust is continually forming at mid-ocean ridge spreading centers.

The segregated oceanic crust may stay at the bottom of the mantle transition zone for the negative buoyancy and this can well explain the observed seismic scattering and week P660P phase.

Oceanic islands preferred thin crust. ... —Debate over how and where oceanic island chains, like Hawaii, form, is at an end according to an academic from The Australian National University.

In Geology 101, Earth's interior is divided into neat layers, like a sugar-coated jawbreaker. But it turns out that parts of the planet's middle layer might be more like peanuts in a sea of caramel.

An artist's impression of the early Earth Earth’s continental crust may have emerged 500 million years earlier than scientists had previously estimated. Pinning down when our planet's land ...