SEDIMENTARY ENVIRONMENTS/Lake Processes and Deposits 553 Figure Cross section through a Gilbert delta from the type area along the eastern shore of the Great Salt Lake The unit with low angle cross bedding in the middle of the section is due to wave reworking of the delta foresets, possibly related to a fall in lake level The length of the section is ca 150 m See Figure 5A for a close up of the foresets showing the typical deposits Reproduced with permission from Talbot MR and Allen PA (1996) Lakes In: Reading HG (ed.) Sedimentary Environments: Processes, Facies and Stratigraphy, pp 83 124 Oxford: Blackwell Figure (A) Typical foreset deposits in a Gilbert delta Note the variable grain size, due to changes in discharge, and the tendency to downslope imbrication in some of the layers of cobbles The height of the section is ca 2.5 m Late Pleistocene, Willard, Utah (B) Beach gravel consisting of well rounded lava and pumice clasts The coarser zones, in particular, show the typical open framework texture (absence of matrix) characteristic of wave washed beaches Holocene, Lake Langano, Ethiopia