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Geology

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arclein

"But some of these areas, in particular the Campi Flegrei, are densely populated and therefore even small eruptions, which are the most probable, fortunately, can pose risks for the population," said De Natale, from the Vesuvius observatory at Ital

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arclein

It is known that the Earth's magnetic field is produced by convection currents of an electrically conducting iron-nickel alloy in the liquid core, about 3,000 kilometers below the earth's surface. The geomagnetic field is highly variable, there are

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arclein

he rift lies beneath the Ferrigno Ice Stream on a stretch of coast so remote that it has only been visited once previously. The British Antarctic Survey (BAS) project revisited the area two years ago in the person of Aberdeen University glaciologi

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arclein

What I suspect will work is to produce coarse biochar from sawdust which should be readily available in sufficient amounts to produce the tonnages desired. I would then blend the mill tailings and the biochar on perhaps a ten to one ratio of tailing

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arclein

have occurred in Iceland four times in roughly the past thousand years, records indicate, the most recent being the deadly and remarkable eruption of Iceland's volcano Laki in 1783-84.

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arclein

reveal that a steep decline in the intensity of melting within the planet's mantle - the hot, heat-transferring rock layer between the crust and molten outer core - brought about ideal conditions for the period known as the Great Oxygenation Event (

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arclein

Now, Guilherme Gualda of Vanderbilt University and his colleagues present several lines of evidence from the Bishop Tuff deposit at Long Valley, suggesting that the pools are "ephemeral" - lasting as little as 500 years before eruption.

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arclein

The UK-led team of researchers analysed tiny crystals in rocks erupted from the volcano. These crystals contain a record of events inside the magma chamber such as injections of hot magma or gas. They found that injections of magma or gas into the c

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http://www.wired.com, By Erik Klemetti

If you’ve ever seen an explosive volcanic eruption – either live or on video – you know that there is an awful lot of ash produced. All that magma (well, most of it) that is erupting from the volcano is being fragmented into tiny glass shards that we

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http://phys.org, by Lin Edwards

An earthquake in the Indian Ocean off the coast of Sumatra, Indonesia on 11th April was unusually powerful, at magnitude 8.6, for a “strike-slip” type of quake, and a new analysis of the earthquake and its 8.2 magnitude after-shock has proposed that

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arclein

This rebound has been countered by some form of major elastic flow from an area close but that was capable of subsiding. The North Atlantic is the only such area available. Thus the argument that parts of the mid ocean ridge subsided cannot be dismis

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arclein

I'll go with the statement-but it is not the standard statement scientists usually make. The landmass on both maps DOES coincide with a map on the Mid-Atlantic Ridge in the Scientific American a while back, indicating the area of a possible earlier

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arclein

"Both the building blocks for continents and the continental crust itself, dating back as much as 3 billion years, are highly depleted in copper."

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arclein

Before the magma separated from the bedrock, the semifluid rock and the leftover solid minerals actively exchanged trace elements. "Different minerals have characteristic ways of separating when trace elements are smelted. In other words, the con

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arclein

The researchers also found spherules that had collided at high velocities with other spherules during the chaos of impact. Such features, Kennett noted, could not have formed through anthropogenic, volcanic, or other natural terrestrial processes. "

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arclein

e 250 million years ago when rapid climate change wiped out nearly all marine species and a majority of those on land. Now, they have discovered a new culprit likely involved in the annihilation: an influx of mercury into the eco-system.

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arclein

"We're excited to actually get some really good samples and very clear cut continental rocks which show that (the islands) are little fragments of Gondwana that were left behind as India moved away from Australia," she said.

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arclein

The East Antarctic Ice Sheet, which formed 34 million years ago and covers 10 million km" of our planet (an area the size of Canada), protected the mountains from erosion.

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Wired Magazine

UPDATE 3:15 EDT: It looks like the phreatomagmatic explosive activity is beginning south of El Hierro. Prensa El Hierro tweeted (translated): “Juan Manuel Santana have just announced that produce water columns and ash.” La Restinga is being evacuated

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