31 Mar '12, 10pm

Earth's Crust Exposed in Oman: The mountains of northeastern Oman are high and dry, but millions of years ago, t...

The mountains of northeastern Oman are rugged, dry, and as much as 2,500 meters (8,200 feet) above sea level. Yet millions of years ago, parts of these mountains were at the bottom of the sea. Actually, they were beneath it. The landscape is known to geologists as the Semail (or Samail) ophiolite, and it holds evidence of the creative and destructive forces that shape our planet. The rocks exposed in the Oman Mountains used to lie in Earth’s interior, at the boundary between crust and the mantle, but when the ancient Tethys Ocean narrowed and closed, the forces that squeezed the Tethys also thrust the ancient seafloor skyward. Ophiolite refers to a landform where ancient oceanic crust now sits at the land surface. The Advanced Land Imager (ALI) on NASA’s Earth Observing-1 (EO-1) satellite captured this natural-color image of a portion of the Semail ophiolite on March 6, 20...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=77569&s...

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Earth's Crust Exposed in Oman

earthobservatory.nasa.gov 31 Mar '12, 10pm

The different rock types that comprise the Semail ophiolite sequence are visible in this image. From west to east (left to...

Earth's Crust Exposed in Oman [image] #NASA

earthobservatory.nasa.gov 31 Mar '12, 10pm

The different rock types that comprise the Semail ophiolite sequence are visible in this image. From west to east (left to...

Enter the 2012 “Love the Earth, Plant a Roof!” Earth Day Photo Contest!

Enter the 2012 “Love the Earth, Plant a Roof!” ...

greenroofs.com 03 Apr '12, 5pm

A fun photo contest! The mission of the “Love the Earth, Plant a Roof!” Earth Day Photo Contest is to create interest in a...

East African Rift Valley, Kenya [image] #NASA

earthobservatory.nasa.gov 01 Apr '12, 10pm

The East African Rift is one of the great tectonic features of Africa, caused by fracturing of the Earth’s crust. This ast...

VIDEO: Illegal #deforestation exposed in Brazil...

greenpeace.org.uk 02 Apr '12, 3pm

After months of investigations, activists have exposed an illegal logging operation underway in public lands in the Amazon...

The first true 'alien Earth' may be found in the next two years, says Nasa scientist

The first true 'alien Earth' may be found in th...

straitstimes.com 04 Apr '12, 1pm

Handout photo released on March 26, 2012 shows an artist?s impression of a sunset seen from the super-Earth Gliese 667 Cc....