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Christine Stevens
Attended South Dakota State University
Lives in Sioux Falls, SD
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Christine Stevens

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The Mysterious Libyan Desert Glass ... "Between the borders of Egypt and Libya is the Great Sand Sea, an enormous sandy desert that stretches about 650 km from north to south and 300 km from east to west, covering an area the size of Ireland. Prevailing winds have organized this great sand mass into huge longitudinal crested dunes rising 100 meters high at places and stretching uninterrupted for hundreds of kilometers, separated by flat corridors about a kilometer or two wide. In these long narrow gaps are areas where the underlying bedrock is exposed. In these exposed surfaces a curious natural glass is found.

The so called Libyan Desert Glass is the purest natural silica glass ever found on earth. The glass is generally yellow in color. It can be very clear or it can be a milky, and even contain tiny bubbles, white wisps, and inky black swirls. Over a thousand tons of these glass are strewn across hundreds of kilometers of bleak desert. Most of these are the size of pebbles polished smooth by the abrasive action of the blowing sand. Others are chunks of considerable size and weight. The biggest piece ever found weighed around 26 kg.

Natural glass, such as Libyan Desert Glass, can be formed either by lightning strike, or volcanic activity or meteorites striking the earth. The Libyan desert glass has been dated as having formed about 26 million years ago, which made scientists assume that the glass here was formed when a meteorite struck earth around this time, but the absence of an impact crater pose problems for this theory. (In 2007, a circular feature was discovered using satellite images but evidence of it being an impact crater is slim to none.) Another theory suggest an exploding comet near the surface heating up the sand beneath it to a extreme temperatures resulting in the formation of a huge amount of silica glass.

The first scientific discovery of Libyan Desert Glass was made by an Englishman named Patrick A. Clayton in 1932, who brought the first samples back to Europe for study. However, the existence of the glass was known to man long before that. Local inhabitants in the Neolithic period made tools out of the glass, and later the Egyptians used it as jewel. A large piece of carved stone on the breastplate of the famous Egyptian pharaoh Tutankhamun was identified as none other than Libyan Desert Glass ..."

MORE: http://www.amusingplanet.com/2015/04/the-mysterious-libyan-desert-glass.html
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Very cool!
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Clever Space saving Idea ...
Folding outdoor table and benches

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GREAT IDEA !
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http://fantasyknitter.blogspot.com/2015/04/taxontime2015-discount-coupon.html

Please, if you would share this information, I would appreciate it so much. Thanks!
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Thanks so much for sharing! 
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Christine Stevens

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Morning greetings, and calling all #rockstackers
Gravity Glue 2014 (short version): http://youtu.be/vswc7xB0V6c
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Pretty free pattern!
A sparkly shawl, crocheted with lightweight sequined yarn.
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Have her in circles
41 people
Annarita Pinto's profile photo
Picot Kinga's profile photo
Magda lena's profile photo
Grette Nielsen (Karen Grete)'s profile photo
Jerry Erickson's profile photo
Nataly Cervantes (Creaciones Tejidas)'s profile photo
Suzanne Sumrow's profile photo
Jenn Zeyen's profile photo
Kami Dikami's profile photo
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Currently
Sioux Falls, SD
Previously
Denver - Rapid City, SD - Yankton, SD - Oklahoma City
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Introduction
I was born, grew up, went to college, married, and now I'm "mature" and still have lots of dreams to fulfill.  There were some tumultuous times, and some good times, and I'm still learning to take one day at a time, and enjoy the little things.  I love creative activities, especially knitting and crochet and painting landscapes with water colors.  I would love to take more little day trips in the Black Hills, and go fishing now and then. I love teaching knitting classes and I am passionate about spreading the joy of handcrafts. 
Education
  • South Dakota State University
  • Denver Opportunity School
  • Yankton High School
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Female
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Nelson
Christine Stevens's +1's are the things they like, agree with, or want to recommend.
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Mijn foto · Monique: Mijn naam is Monique en creativiteit stroomt door al mijn aderen en bloedvaten. Op dit moment ben ik verslaafd aan het