06 May '12, 10pm

Ouarkziz Impact Crater, Algeria [image] #NASA

The Ouarkziz Impact Crater is located in northwestern Algeria, close to the border with Morocco. The crater was formed by a meteor impact less than 70 million years ago, during the late Cretaceous Period of the Mesozoic Era, or “Age of Dinosaurs.” Originally called Tindouf, the 3.5-kilometer wide crater (image center) has been heavily eroded since its formation; however, its circular morphology is highlighted by exposures of older sedimentary rock layers that form roughly northwest to southeast-trending ridgelines. From the vantage point of an astronaut on the International Space Station, the impact crater is clearly visible with a magnifying camera lens. A geologist interpreting this image to build a geological history of the region would conclude that the Ouarkziz crater is younger than the sedimentary rocks, as the rock layers had to be already present for the meteor to...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=77851&s...

Tweets

Ouarkziz Impact Crater, Algeria: The crater was...

earthobservatory.nasa.gov 06 May '12, 10pm

The Ouarkziz Impact Crater is located in northwestern Algeria, close to the border with Morocco. The crater was formed by ...

Ouarkziz Impact Crater, Algeria: The crater was...

earthobservatory.nasa.gov 06 May '12, 10pm

The Ouarkziz Impact Crater is located in northwestern Algeria, close to the border with Morocco. The crater was formed by ...

Sea Ice in Alaska's Bristol Bay [image] #NASA

earthobservatory.nasa.gov 05 May '12, 10pm

View Image Comparison View Both Images Over the winter of 2011–2012, the extent of sea ice in the Arctic Ocean was slightl...

The Economist on Najib's image after Bersih @Hi...

rockybru.com.my 07 May '12, 9am

More evidence is crawling out of cyberspace about what really sparked the violence at the end of Bersih 3 on April 28. In ...

Changes in Canberra [image] #NASA

Changes in Canberra [image] #NASA

earthobservatory.nasa.gov 12 May '12, 10pm

View Image Comparison View Both Images In September 2008, Australia’s capital city of Canberra was parched. Situated in so...

NTU Alumni Club to shed staid image

straitstimes.com 06 May '12, 12am

The 26-year-old Nanyang Technological University (NTU) Alumni Club has an image problem. Recent graduates, and those soon ...