On the basis of Clarke analyses, geochemical series of chemical elements of the intrusive rocks of El Sela are identified: two-mica granite: Ni₃₆- Mo_7.8- U_2.7- Co_2.4- Cu_1.8- Th_1.3; microgranite: U₅₅- Ni₂₀- Co_7.3- Mo_5.4- Zn_3.6- W_3.1- Cu_2.4; dolerite: U₃₇- Mo₁₈- Cs₁₁- Nb_9.1- Sn_7.3- W_4.3- Th_3.9- Y_3.6- Zr_2.9- Ni_2.3- Rb_2.2- Hf_1.6- Zn_1.6- Ba_1.2; and bostonite: Ni₅₄- Mo₁₄- Rb_9.8- Ta_5.3- Nb_4.4- Cu_3.3- Y_2.4- U_2.3- Hf_1.7- Zr_1.4- Th_1.3. Microgranite and dolerite have the highest U-contents whereas the two-mica granite has high Th. Microgranite and two-mica granite and bostonite belong to calc-alkaline affinity, while dolerite belongs to tholeiitic. Two-mica granite, microgranite and dolerite fall into meta- and/or peraluminous rocks, whereas bostonite fall in the peralkaline field. Two-mica granite and microgranite are located volcanic arc syn-collision granites, while dolerite and bostonite fall into within plate field. The temperature of crystallisation of two-mica granite ranges from 700°C to 750°C, microgranite from 750°C to 800°C, dolerite from 800°C to 900°C and bostonite ranges from 950°C to 1020°C. The contents of uranium, thorium and potassium were determined and showed high concentrations for radioactive elements.