All articles tagged with #seismic tomography
Scientists have discovered two massive structures beneath Africa and the Pacific, known as LLSVPs, which may be remnants of the ancient planet Theia that collided with Earth billions of years ago, potentially influencing Earth's geological activity and surface features.
Scientists have discovered that the deep roots of North America are slowly dripping away into the Earth's mantle, driven by the remnants of the ancient Farallon Plate, providing a rare real-time glimpse into the process of cratonic thinning and continental evolution.
Scientists have detected signs of activity beneath Bolivia's dormant Uturuncu volcano, which has been inactive for over 250,000 years. Using advanced seismic imaging, they found unusual underground formations indicating potential internal fluid or gas movement, raising concerns about a possible eruption. While no immediate danger is confirmed, ongoing monitoring is crucial, and this research could improve global volcanic hazard prediction for long-dormant volcanoes. The study highlights international collaboration and advances in volcano monitoring technology, offering insights into 'zombie' volcanoes that may awaken unexpectedly.
Scientists have discovered two massive structures, known as large low shear velocity provinces (LLSVPs), beneath Africa and the Pacific Ocean, which make up around six percent of the Earth's volume. These structures, also referred to as "blobs," have different seismic properties than the surrounding mantle, indicating they are made of something different. One theory suggests that they could be remnants of an ancient planet called Theia, which collided with Earth around 4.5 billion years ago. However, the exact composition and origin of these structures remain unknown, highlighting the ongoing mysteries of Earth's core and the need for further research.
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.
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.
Two mysterious structures, known as Tuzo and Jason, have been discovered underneath Africa and the Pacific, estimated to take up between three and nine percent of the Earth's total volume. These "blobs" could be part of an ancient planet, Theia, which collided with Earth around 4.5 billion years ago and threw off enough rock to form the Moon. Scientists used seismic tomography to create a map of the Earth's hidden layers and unravel where these "blobs" are, but it's still not clear what they're made of.
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.
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.