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Old March 13th, 2014, 01:05 PM   #1
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Geology news and discussions

Rough diamond hints at vast quantities of water inside Earth

Battle-scarred diamond provides evidence of 'wet zone' 410km below the surface where water is locked up inside minerals

Ian Sample, science correspondent
The Guardian, Wednesday 12 March 2014 18.36 GMT

A small, battered diamond found in the gravel strewn along a shallow riverbed in Brazil has provided evidence of a vast "wet zone" deep inside the Earth that could hold as much water as all the world's oceans put together.

The water is not sloshing around inside the planet, but is held fast within minerals in what is known as the Earth's transition zone, which stretches from 410 to 660km (250-400 miles) beneath the surface.

"It's not a Jules Verne-style ocean you can sail a boat on," said Graham Pearson, a geologist who studied the stone at the University of Alberta. The water-rich zone could transform scientists' understanding of how some of the Earth's geological features arose.

http://www.theguardian.com/science/2...earth-wet-zone


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Old March 14th, 2014, 01:37 PM   #2
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So is it drinkable?
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Old June 3rd, 2014, 04:08 AM   #3
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A Future Sea

In the northeast corner of Africa, a largely unnoticed and lurking geological drama is taking place. A great wound in the earth, running roughly along the N-S axis, is slowly opening up, caused by the upward pressure of magma (molten rock) that crumples the sediments and rocks that overlay it. The fault that is widening will ultimately tear asunder the northeast chunk from the rest of the continent, and in time the rupture will open up, permitting the waters coming from the Red Sea in the north to rush in and fill the valley floor, forming a sea. The piece of dismembered African real estate will drift away towards the Indian Ocean, duplicating what happened hundreds of millions years ago when a similar event farther south of the continent resulted in the breakaway island of what is now Madagascar.






The Great Rift Valley, as what the fissure is geologically known, is actually a series of faults that has all sorts of land features that attest to its being geologically active. Valley floors of varying widths are bounded by columns of rock; undulating stretches of lava flows, numerous active and dormant volcanoes, lakes, uplifted sediments.

The geological phenomenon that will result in the formation of this future sea is evidence of a dynamic earth. Our planet’s crust is punctured in many places by magma and broken up by tectonic plates that are pushing past each other, some against each other and others away from each other. Humans are so often reminded every now and then of this by earthquakes and volcanic eruptions that are frequently destructive and deadly.

http://geology.com/articles/east-africa-rift.shtml

This is a clip from the episode in David Suzuki's presentation in CBC's On The Nature Of Things



Another clip showing the Earth's landmasses millions of years before and after the present time. This is speculative, but instructive.



(Repost from another thread)
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Old June 4th, 2014, 02:52 AM   #4
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Pictures of Indonesia’s Sangeang Api volcano which erupted on May 30, 2014.
Fortunately no casualties have been reported, but the ash necessitated
the closure of airports in some parts of Indonesia and in Darwin Australia.

The eruption sent the ash cloud up to 12 miles high.










http://www.dailymail.co.uk/news/arti...-feet-sky.html

http://www.volcanodiscovery.com/sang...Australia.html

http://laculturevolcan.blogspot.gr/2...urte-mais.html
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Last edited by GodIsNotGreat; June 8th, 2014 at 03:15 AM.
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Old June 12th, 2014, 04:04 AM   #5
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Eruption and Pyroclastic flow of the Guatemalan Volcano Santiaguito May 2014

Santa Maria (which is known also as Santiaguito) in Guatemala put on quite a show, with impressive explosive eruptions
that produced numerous pyroclastic flows(also known as pyroclastic density currents, or PDCs) during May 2014.
As many of you know, pyroclastic flows are some of the most deadly of the volcanic hazards. However, an intrepid geologist
from the INSIVUMEH (the geological survey of Guatemala which monitors the country’s copious volcanic activity),
got close enough to capture some amazing footage of a pyroclastic flow in action.

http://www.wired.com/2014/06/amazing...-in-guatemala/





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Old August 2nd, 2014, 11:18 AM   #6
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Early Earth: A Battered, Hellish World with Water Oases for Life

By Charles Q. Choi, Space.com Contributor
July 30, 2014 01:01pm ET

Asteroids and comets that repeatedly smashed into the early Earth covered the planet's surface with molten rock during its earliest days, but still may have left oases of water that could have supported the evolution of life, scientists say.

The new study reveals that during the planet's infancy, the surface of the Earth was a hellish environment, but perhaps not as hellish as often thought, scientists added.

http://www.space.com/26685-early-ear...ter-oasis.html


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Old August 4th, 2014, 11:08 PM   #7
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Geological Features: Earth from above

Mountain structure in central Namibia



Bazman volcano in Iran is featured in this image photographed by an Expedition 38 crew member aboard the ISS on January 5, 2014.



One of the Expedition 38 crew members aboard the ISS recorded this image of the Manicouagan Crater and reservoir located primarily in Manicouagan Regional County Municipality in Quebec, Canada, on January 2, 2014.



The islands, part of the Aleutian Island chain, are actually the upper slopes of volcanoes rising from the sea floor



This sector of the Green River canyon in eastern Utah is known as Bowknot Bend because of the way the river doubles back on itself.



Full description and more images:

http://disqus.club/goto.php?url=http...-space/100740/
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Old August 14th, 2014, 02:52 AM   #8
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Landsat 8 Yearbook - Earth Images for Everyone

Interactive before and after photos of:

Mount Saint Helens Eruption
Glacier Retreat
Cairo Urbanization
Washington State Landslide

and more....

http://eros.usgs.gov/views-news/landsat-8-yearbook
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Old August 23rd, 2014, 04:53 AM   #9
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Video shows enormous crack in the ground in northern Mexico

From the article:

Incredible footage has emerged showing a 26ft (8m) deep crack in the in the farmland of northwest Mexico, which stretches for over a kilometre.

The crevice which appeared last week, has disconnected Highway 26 between Hermosillo and the coast, Sky Newsreported.

Drivers, including farm workers, have been forced to navigate around the colossal trench.




http://www.independent.co.uk/news/wo...o-9684673.html
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