This cut-away diagram of Earth's interior demonstrates the different rates of rotation of the inner core relative to the mantle and crust, and how those rotations appear to someone on the planet's ...

Colossal volcanic eruptions like the kind that may have obliterated the dinosaurs more than 65 million years ago are caused ...

They reveal that the chemical composition of the deep mantle has remained almost intact since the Earth's formation 4.5 ...

Due to the radiative thermal conductivity of the mineral olivine, only oceanic plates over 60 million years old and ...

Mantle plumes are important geologic processes—they interact with plate tectonics, create rich mineral deposits, and even ...

Giant, large-scale eruptions can have more serious impacts. One such event contributed to the demise of the dinosaurs 66 ...

A spot in eastern Africa called the Afar Triangle marks the meeting point of three rift zones—lines where Earth’s crust is being rent apart. Researchers haven’t been sure exactly what drives this ...

New research from HKU geologists suggests that Earth's first continents were born not from plate tectonics, but from deep ...

Mantle plumes are one of the most dynamic geologic processes on Earth. As their name suggests, these plumes move hot rock near the core-mantle boundary toward the surface, creating new landmasses ...

Scientists have discovered an ancient "ghost" plume lurking beneath Oman. The magma plume is trapped beneath a thick portion of Earth's crust and the upper part of the mantle, the planet's middle ...