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Llsvps

All articles tagged with #llsvps

science2 years ago

Possible Traces of an Ancient Planet Found in Earth's Core

Two large structures, known as large low shear velocity provinces (LLSVPs), located beneath Africa and the Pacific Ocean, could be the remains of an ancient planet that hit the Earth around 4.5 billion years ago, according to the "giant impact hypothesis". These structures occupy around six per cent of the world's entire volume, and seismic tomography has shown that they are made of something different than the surrounding lower mantle. The origin of these structures remains a mystery, but studying Theia has offered important insights into how the possible collision might have kickstarted key plate tectonic and mantle motion inside our planet.

science2 years ago

Possible discovery of ancient planet remnants deep within Earth.

Two large structures, known as large low shear velocity provinces (LLSVPs), located beneath Africa and the Pacific Ocean, could be the remains of an ancient planet that hit the Earth around 4.5 billion years ago. These structures occupy around six per cent of the world’s entire volume, and seismic tomography has shown that they are made of something different than the surrounding lower mantle. While there is no direct way of observing the Earth’s core, studies into Theia have offered important insights into how the possible collision might have kickstarted key plate tectonic and mantle motion inside our planet.

science2 years ago

Possible discovery of ancient planet remnants deep within Earth.

Two large structures, known as large low shear velocity provinces (LLSVPs), located beneath Africa and the Pacific Ocean, could be the remains of an ancient planet that hit the Earth around 4.5 billion years ago. These structures occupy around six per cent of the world’s entire volume, and seismic tomography has shown that they are made of something different than the surrounding lower mantle. While there is no direct way of observing the Earth’s core, studies into Theia have offered important insights into how the possible collision might have kickstarted key plate tectonic and mantle motion inside our planet.

science2 years ago

Uncovering Earth's Mysterious Subterranean Mountains

Scientists have discovered two large and mysterious structures, known as large low shear velocity provinces (LLSVPs), deep within the Earth's mantle. These blobs occupy around three to nine percent of the volume of the Earth and are denser than the surrounding mantle. One hypothesis is that they are piles of oceanic crust that have been subducted and accumulated over billions of years, while another theory suggests that they are chunks of an ancient planet, Theia, that collided with Earth around 4.5 billion years ago. Techniques for investigating beneath the Earth's surface are continually improving, and hopefully, we will soon have a better understanding of these mysterious structures.