[en] In this paper the deltonic fission (Δ-fission) as a possible dominant fission mode of superheavy elements (SHE) is investigated. The Q_ΔF systematics, dynamical thresholds as well as the competition between the deltonic fission and usual spontaneous fission (SF) are discussed. It is shown that the usual island of stability around the double magic nucleus ²⁹⁸ [114] is suppressed via a deep instability due to the deltonic fission mode. Two islands of relative stability against the deltonic fission dominant mode are predicted to be around the nucleus ³¹⁰ [126] , where T_ΔF = 10^-3.9 yr, for even-even nuclei and around the nucleus ³⁰³ [119] with T_ΔF = 10^-1.0 yr for A-odd nuclei. (Author)