Coastal sand masses (high dunes)
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Coastal sand islands with high dunes usually contain one or more unconfined, unconsolidated sedimentary aquifers, where groundwater is stored and transmitted through inter-granular voids between sand particles. These unconsolidated sedimentary aquifers may be perched due to the presence of low permeability layers within the coastal sand mass (e.g. layers of coffee rock or beach rock). Examples of coastal sand islands with high dunes along the Queensland coast include Fraser, Moreton and North Stradbroke islands.
A wide range of ecosystems may depend on groundwater in these unconsolidated sedimentary aquifers to support their plant and animal communities, ecological processes and delivery of ecosystem services.
Last updated: 18 December 2015
This page should be cited as:
Coastal sand masses (high dunes), WetlandInfo 2013, Queensland Government, Queensland, viewed 11 February 2019, .