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Encyclopedia of geology, five volume set, volume 1 5 (encyclopedia of geology series) ( PDFDrive ) 2403

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560 SEDIMENTARY ENVIRONMENTS/Lake Processes and Deposits Figure 12 Schematic distributions of deposits in and around lakes developed in a half graben (rift) basin under (A) dry to arid and (B) humid climatic conditions (A) The basin is hydrologically closed and the lake is probably saline; extensive salt flats surround the lake and are flooded only following rare rainstorms (B) A deep rift lake In both cases the asymmetry of the basin has a strong influence on sediment distribution This is particularly apparent in (B), where the deepest water is close to the border fault and the axial drainage system also tends to be located here owing to maximum subsidence in this part of the basin Adapted with permission from Leeder MR and Gawthorpe RL (1987) Sedimentary models for extensional tilt block/half garben basins In: Coward MP, Dewey JF and Hancock PL (eds.) Continental Extensional Tectonics, pp 139 152 London, Geological Society Special Publication No 28

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