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Old 04-20-2008, 03:06 PM   #1
xoxoxoBruce
The future is unwritten
 
Join Date: Oct 2002
Posts: 71,105
April 20, 2008: Saudi Pocks

A view from the International Space station.
Quote:
The western half of the Arabian peninsula contains not only large expanses of sand and gravel, but extensive lava fields known as haraat (harrat for a named field). One such field is the 14,000-square kilometer Harrat Khaybar, located approximately 137 kilometers to the northeast of the city of Al Madinah (Medina). According to scientists, the volcanic field was formed by eruptions along a 100-kilometer long north-south linear vent system over the past 5 million years; the most recent recorded eruption took place between 600 - 700 A.D. Harrat Khaybar contains a wide range of volcanic rock types and spectacular landforms, several of which are represented in this view.




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