[1] Inst Geodynam, Bucharest, Romania
[2] Ibn Zohr Univ, Dept Earth Sci, Fac Sci, Agadir, Morocco
[3] Monachus Grp Sci Res & Ecol Educ, Constanta, Romania
[4] Univ Complutense Madrid, CSIC, Inst Geociencias, Madrid, Spain
[5] Natl Acad Sci Ukraine, Sci Ctr Aerosp Res Earth, Kiev, Ukraine