Fig. 5. (a) E–W, low-frequency seismic reflection profile BP-26 crossing the Lake Cheko southern slope, the delta, and continuing upstream the Kimchu river. (b) Interpretation of the profile, with the main features indicated. Note the differences between seismic facies in the river and lake domains, which are separated by U1: alluvial /fluvial deposits are less homogeneous and show the typical pattern of fluvial valley infill caused by lateral migration of meanders. To download a higher resolution image click here: 2696 kb.