Home » Archive

Articles tagged with: geology

Written By: grant on August 5, 2014 No Comment

Nature offers one of the least comforting explanations for a mysterious hole in Siberia. It wasn’t from an asteroid or a rogue telephone-pole-installing crew. The 30-meter-wide crater was caused by methane – a flammable, stinky greenhouse gas – being released from melting permafrost:

Over the past 20 years, permafrost at a depth of 20 [...]

Written By: grant on July 29, 2014 No Comment

Nature shares satellite data that shows not only lakes, rivers and reservoirs shrinking across the whole U.S. Southwest, but even water underground is going away:

To track groundwater losses, researchers used data from the Gravity Recovery and Climate Experiment (GRACE), a pair of satellites operated by NASA and the German Aerospace Centre (DLR) that measure [...]

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

Click to embiggen

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.

Click to embiggen

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

Tags: []
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 [...]

Tags: []
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 [...]

Tags: []
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 [...]

  Copyright ©2011 The Guild of Scientific Troubadours, All rights reserved.| Music Saves Lives.| Powered by WordPress| Simple Indy theme by India Fascinates