The UAE will host Expo 2020!
  • Arabic
Supported by the UAE National Media Council
We are in the process of developing and improving our website, and we invite you to participate in our brief survey to measure the level of your satisfaction
Satisfaction Survey For UAE Interact Website
رغبة منا بالتعرف على مستوى رضاكم عن موقعنا وبهدف تطويره وتحسينه، فقد قمنا بتصميم استبيان سريع لقياس مدى الرضا عن موقع دولة الإمارات العربية المتحدة روعي في تصميم الاستبيان أن يكون قصيرا وسريعا كي لا نطيل عليكم، وعليه نرجو منكم التكرم باستكماله عن طريق الرابط التالي
استبيان رضا المتعاملين عن موقع دولة الإمارات العربية المتحدة

Rock found in UAE and Oman could absorb CO2

posted on 09/11/2008: 2491 views

Rock formations found in eastern parts of the UAE and Oman could help reduce carbon dioxide emissions by soaking up the harmful gas, a team of scientists believe.

Peridotite, a rare rock which has been forced up from the earth's mantle, is being tested as a "carbon capture” material by researchers at Columbia University in New York.

Contact between carbon dioxide and peridotite causes a chemical reaction which, over time, converts them into minerals such as calcite. The scientists hope that pumping carbon dioxide captured from power stations into the rock can significantly cut amounts released into the air.

Prof Peter Kelemen, a geologist at Columbia, said: "We're talking about billions of tons of carbon dioxide a year. We have some very promising theoretical calculations.”

He speculated that injecting the rock with heated water containing carbon dioxide could speed up the gas-trapping process. He estimated that the process could soak up four billion tons of the gas a year – about 10 per cent of the carbon dioxide produced through human activity a year.

Prof Kelemen said one possibility for the use of the rock could be to inject heated water containing carbon dioxide. Heating the rock could speed up the gas-trapping process by a million times or more.

Researchers had ruled out as too costly an earlier plan to mine peridotite and ship it to nearby power stations.

He said the team was still studying whether the porous rocks would stop absorbing the harmful gases once they are "clogged”, or whether the peridotite would break apart.

Other "carbon capture” methods involve pumping carbon dioxide into underground cavities, such as mineshafts and spent oil fields. The advantage of peridotite would be the elimination, through conversion, of the greenhouse gas.

Jon Rodd, the general manager of exploration and production at ESG Dubai, an oil and gas company, said: "If you've driven through Hatta, you've probably seen a lot of the stuff.”

Peridotite has a rich dark red colour when it is seen on the surface, after it has been weathered by wind and rain. But when chipped with a hammer, a fresh slab of peridotite will reveal a dark green, almost black coloured stone, Mr. Rodd said.

"It's seen where the old oceanic crust and the mantle has been thrust upward on to the continental plate,” he said. "It's rare to see this kind of rock type.”

"It's already available in the UAE,” according to Hamdi Kandil, a geologist who lectures at UAE University. "They are related to the border of the Oman mountains, and if you go to the eastern area of the UAE, you will find peridotite.”

Peridotite can also be found in California, Oregon, Montana, the Balkans and the Pacific islands of Papua New Guinea and New Caledonia.

The findings are to be published in the Nov 11 edition of the Proceedings of the National Academy of Sciences. – The National


29 September 2015 Abu Dhabi Municipality completes revamping seismic control system, constructs network of 50 stations
28 April 2015 UAE has no major seismic sources - NCMS official
31 July 2014 5.5-magnitude earthquake hits South Iran, 300 kilometre from Abu Dhabi
28 May 2014 Iranian earthquake felt in parts of UAE
10 March 2014 Mild tremor hits UAE's Dibba at midnight

Most Read