Basement structure, seismostratigraphy, and structural inheritance during the rifting of the Ifni/Tan-Tan margin (southwestern Morocco).

Basement structure, seismostratigraphy, and structural inheritance during the rifting of the Ifni/Tan-Tan margin (southwestern Morocco). Seismic reflection profiles from the Ifni/Tan-Tan Atlantic margin of southern Morocco, interpreted in the light of well data and field geology from the Western Anti-Atlas, allowed us to establish the seismostratigraphic framework of the syn-rift series and to reveal (i) a compressional structural style in the pre-Triassic basement similar to that established in the adjacent outcropping onshore basement but with an opposed western vergence, (ii) the importance of inherited anterior structures in the formation of Triassic-Liassic rift structures and (iii) an east-west propagation of these rift structures.