Tweed Valley a 'Natural Laboratory' to Test Carbon Sequestration Theory


Rock weathering would absorb small amounts of CO2 pollution.

An idea to enhance natural carbon capture from olivine weathering has never been tested at scale. University of Sydney geoscientists have proposed the Tweed Valley as a laboratory and gained some interesting initial results.

Geoscientists at the University of Sydney have discovered a natural laboratory to test claims that the carbon captured during the erosion and weathering of common rocks could be a viable mitigation strategy against global warming.

That laboratory is the Tweed River valley in north-eastern New South Wales. “When common rocks, known as olivine, chemically break down, they absorb carbon dioxide to form carbonates that can then be washed into the oceans,” said lead author of the study, Kyle Manley, a student at the University of Irvine in California, who started the research while studying at Sydney.

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Image via University of Sydney