The expression of stratigraphy at the estuarine basin
scale is a large-scale stratigraphy, which focuses on the
geometry and interrelationships of the various gross facies
within the estuary. For complex estuaries, the stratigraphy
at the large scale will be an aggregate or amalgamation of
juxtaposed and/or onlapping facies that have been formed
at the small scale. Most studies of estuarine stratigraphy
have been at the basin scale of a large-scale stratigraphy
and, in particular, longitudinal stratigraphy (Dalrymple
et al., 1992).
To date, there has been an emphasis on valley-fill estuarine stratigraphy (Dalrymple et al., 1992) usually within
Stratigraphy of Estuaries, Figure 15 Longitudinal stratigraphic transect in the Lawley River Estuary showing a mud-dominated
sequence. Fluvial deposits to the south are minimal on bedrock as compared to the thickness of the tidal and subtidal mud deposits
(Information from Semeniuk, 1983, Semeniuk, 1985a).
Stratigraphy of Estuaries, Figure 16 Longitudinal stratigraphic transect in the Klang-Langat Estuary showing a sand-to-mud
shoaling sequence, capped by freshwater peat (Modified from Coleman et al., 1970).
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