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Articles tagged with: geology

Written By: grant on June 8, 2014 No Comment
Science Art: <i>“Dolerite” Dyke Traversing “Desert Sandstone”</i>, 1872.

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From the Quarterly Journal of the Geological Society of London, volume 28.

It’s a dyke, a rock formation between two layers of Australian rock like jam in a sandwich.

This seems like a great place to find fossils or “vein-stones,” but the London geologists said, “No. No, it isn’t.”

It’s just

Written By: grant on January 27, 2014 No Comment
Science Art: <i>Cuesta de Viento Reservoir, Argentina</i>, by USGS Earth Resources Observation and Science (EROS) Center.

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This is the EROS image of the week, because the U.S. Geological Survey believes in science-as-art, too.

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Written By: grant on January 7, 2014 No Comment

Nature looks at the widening gap in understanding earthquake lights… not a gap in our knowledge, but in the ground, as fault lines pull apart to create eerie lights before quakes:

A new catalogue of earthquake lights — mysterious glows sometimes reported before or during seismic shaking — finds that they happen most often [...]

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Written By: grant on October 18, 2013 No Comment

That space rock that blew up over the Urals (and was captured on a few different cameras)… well, BBC reports that they’ve just hauled a 5-foot-long fragment out of Russia’s Lake Chebarkul:

Live footage showed a team pull out a 1.5-metre-long (five-foot-long) rock from the lake after first wrapping it in a special [...]

Written By: grant on April 7, 2013 No Comment
Science Art: <i>Nazca Lines, Peru, 2000</i>, NASA’s Earth as Art

These are probably the world’s largest petroglyphs. They’re ancient rock carvings that we can see from space.

You can’t make out the funky checkerboards, or the hummingbirds or monkeys… but you can see that there’s something there.

Welcome to Nazca, ancient gods. Approach on runway number three.

[via NPR]

Written By: grant on March 22, 2013 No Comment

OK, well, instant veins of gold, at least. The gold, Nature says, is in the ground already. But it takes an earthquake to make it mine-able in a flash:

Scientists have long known that veins of gold are formed by mineral deposition from hot fluids flowing through cracks deep in Earth’s crust. But a [...]

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Written By: grant on January 17, 2013 No Comment

New Scientist opens wide to tell us Mars Rover Curiosity is ready to drill into the Red Planet:

Chemical analysis from one of the rover’s remote-sensing cameras shows that the veins are hydrated calcium sulphates, possibly gypsum. They probably formed when water flowed through fractures in the bedrock and left dissolved material behind [...]

Written By: grant on October 24, 2012 No Comment

And let me tell you, Nature is none too pleased:

The meeting was unusually quick, and was followed by a press conference at which the Civil Protection Department and local authorities reassured the population, stating that minor shocks did not increase the risk of a major one.

According to the prosecutor, such reassurances led 29 [...]

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Written By: grant on October 23, 2012 No Comment

You remember Lake Vostok, yes? The Antarctic lake where scientists pulled up some water from 20 million years ago, just to see what things might have survived? Well, New Scientist says, initial reports are …nothing much, so far:

Isolated from the rest of the planet for 14 million years, Lake Vostok might be [...]

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