The basin is limited to the West by the Tanga and the Mandawa faults
which separate it from the basement (Figs. 3 and 4b). To the East,
the basin is bordered by a relatively low gravimetric feature parallel
to the Davie Fracture Zone and situated to the east of the isopach
6 km (Fig. 4b). The Tanzania coastal basin is laterally adjacent to the
Lamu basin in the North and to the Ruvuma basin in the South.
Presently, this basin is connected to the Rufiji catchment basin
which supplies its central part with sediments. The southern part of
the basin is fed by the Ruvuma catchment (Fig. 5).