Many of the geological formations of Minnesota have a porosity admirably suited to act as a reservoir rock, and there is some structure that might be favorable to the accumulation of oil and gas, but the deposits which might serve as the original source of the hydrocarbons are lacking. The sands are flooded with comparatively fresh water. Gas which is occasionally struck in shallow wells of southern Minnesota, comes from peat bogs and forest beds buried within the drift, and has no commercial value. Minnesota is justly listed among the states of no importance from the standpoint of possible oil and gas production.