Scientists have begun drilling to a planned depth of three-quarters of a mile in southeastern Washington basalt. The goal? To see if carbon sequestration is practical there. Geologists already believe basalt is a good medium for carbon sequestration, in part, because carbon dioxide in basalt is converted into calcium carbonate.
But, High Country News cautions that the idea still has a lot of uncertainty.
And, theoretically, saline formations are better for sequestration.
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