Carbon Sequestration in Deep-Sea Basalt

January 23, 2009
Lamont Doherty's Earth Science Colloquium

Featuring

Dave_Goldberg.jpg
Lamont-Doherty Earth Observatory
Lamont Research Professor
Doherty Senior Research Scientist
Lamont Doherty Earth Observatory

Sub-seafloor basalt formations offer an option for permanent storage of anthropogenic CO2 that is secure and sufficiently large to address release of CO2 to the hydrosphere and atmosphere for many centuries to come. CO2 injection into deep-sea basalts provides unique advantages for sequestration, including: 1) vast reservoir capacities, 2) chemical reaction of CO2 and basalt to form solid, stable carbonates, and post-injection leakage by geological, gravitational, and hydrate trapping mechanisms. This possibility warrants energized scientific research, technological and environmental assessment, and economic evaluation to ultimately establish a pilot injection project in deep-sea basalt.