Seismologists have conducted a planetary ultrasound and found evidence that light elements such as oxygen and sulphur collect at the edge of Earth's core, nature.com writes.
Researchers at the University of Bristol have reveal in the journal Nature that they have developed a seismological 'speed gun' for the inside of Earth. Using this technique they will be able to measure the way Earth's deep interior slowly moves around. Read more at sciencedaily.com.
Enigmatic volcanic hot spots around the world might be pulsating together - like a great planetary heartbeat - at the rates of five and 10 million years, say researchers from Norway, Hawaii and Australia. Read more at discovery.com.
Amerikanske forskarar har funne ein lavastein i Nevada som tyder på at jordas magnetfelt har flytta seg med heile 53 grader på eit år. Med ein slik fart ville jordas magnetfelt skifte på berre fire år, skriver forskning.no.
Sedimenter av sand og leire på gammel havbunn er ikke bare skapt av klimaendringer eller platetektonikk, som hittil antatt, men også av konveksjon i undergrunnen, skriver forskning.no.
Researchers discover evidence for the oldest Earth mantle reservoir on Baffin Island. Read more at nsf.gov.
Understanding the processes that cause volcanic eruptions can help scientists predict how often and how violently a volcano will erupt. Read more at geology.com.
The discovery of -- geo-neutrinos -- could help geologists understand how reactions taking place in the planet's interior affect events on the surface such as earthquakes and volcanoes. Read more at sciencedaily.com.
For the first time, an international team of researchers has incorporated extensive geochemical data on the formation of Earth into a model with surprising results: more models can be used for the process of Earth's accretion than previously assumed, sciencedaily.com writes.
A study in Nature suggests that volcanoes and mountains in the Mediterranean can grow from the pressure of the semi-liquid mantle pushing on Earth's crust from below. Read more at sciencedaily.com.
The Yellowstone caldera is home to thousands of geothermal springs and 75% of the world's geysers, with kilometers-deep groundwater flow systems that tap magmatic heat sources, scienceblogs.com writes.
Tiny variations in the isotopic composition of silver in meteorites and Earth rocks are helping scientists put together a timetable of how our planet was assembled beginning 4.568 billion years ago, sciencedaily.com writes.
Scientists have used quantum mechanics to reveal that the most common mineral on Earth is relatively uncommon deep within the planet, sciencedaily.com writes.
We know more about distant galaxies than we do about the interior of our own planet. However, by observing distant earthquakes, researchers at the University of Calgary have revealed new clues about the top of the Earth's core, sciencedaily.com writes.
Even if you breezed through a few geology classes in your day, it's easy to think of the Earth's interior like a Cadbury Egg: solid on the outside and molten in the center. Yet we've known for more than 60 years that the very center of the Earth is actually solid, discovery.com writes.
Did the Earth's magnetic poles once lie near the equator? That could explain puzzling changes in the magnetism of rocks millions of years ago, newscientist.com writes.
Scientists have discovered that the Earth's magnetic field 3.5 billion years ago was only half as strong as it is today, sciencedaily.com writes.
When Earth was young, it exhaled the atmosphere. However, some light elements got trapped inside the planet. What caused Earth to hold its last breath? sciencedaily.com asks.
Vårt bilde av Jordas indre struktur og bevegelser har blitt mer detaljert i det første tiåret i det nye millenniet, skriver geolog Reidar Trønnes i denne kronikken som oppsummerer forskningsåret 2009 - og siste tiår. Les den på forskning.no.
Volcanoes are pressure valves that release energy from deep within the Earth. Beautiful and powerful, awe-inspiring and deadly, they are spectacular reminders of the dynamic forces that continually shape our planet. Try the VolcanoExplorer at discovery.com.
Hawaii has long been a puzzle for geologists. Plate tectonic theory readily explains the existence of volcanoes at boundaries where plates split apart or collide, but mid-plate volcanoes such as those that built the Hawaiian island chain have been harder to fit into the theory, ciw.edu says.
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