Geologists may have to revise their ideas about what goes on in the Earths interior, following the publication today of new research in the journal Nature. It appears that contrary to previous belief, part of the interior has remained undisturbed for at least two-and-a-half billion years, in spite of the massive forces at work inside the planet.
Like a saucepan of thick syrup being heated on the stove, huge convection currents within the Earth, generated by heat from the core, have stirred up the interior for most of its four-and-a-half billion year history. This has led geologists to believe that the interior is now well mixed. But Dr Simon Turner and Professor Chris Hawkesworth from the Earth Sciences Department at Bristol University, with colleagues at the Open University, have new data that suggest the presence of extremely ancient material beneath the Azores.
The islands of the Azores are volcanoes that sit either side of the Mid-Atlantic Ridge, a huge mountain chain beneath the ocean that formed as hot material from the Earths interior rose to the surface. In some places, such as the Azores, the tops of these mountains form islands. The lavas from the Azores volcanoes appear to have been derived from some of the oldest material yet discovered within the convecting and well stirred part of the Earth.
Cherry Lewis | alfa
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Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...
Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.
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The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
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The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
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