Sequestration of carbon dioxide in organic-rich geological formations

A method for subsurface sequestration of carbon dioxide, the method comprising:

• forming, in situ in a subterranean zone, an oxidizer having a redox potential of at least 0.5 volts by injecting a first precursor compound into the subterranean zone and then injecting a second precursor compound into the subterranean zone, the first precursor compound and the second precursor compound reactive to form the oxidizer, the subterranean zone having an average total organic content of at least three weight percent;
• injecting carbon dioxide into the subterranean zone via one or a plurality of wells, wherein a total volume of all fluids injected into the subterranean zone via the one or the plurality of wells comprises, on average per well per month, at least sixty-five weight percent carbon dioxide and less than thirty weight percent water;
• and
• sequestering at least a portion of the carbon dioxide in the subterranean zone.