Inland sand ridges
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Inland sand ridges, composed largely of unconsolidated to semi-consolidated sand, are fluvial in origin with most exhibiting evidence of aeolian re-working. Generally linear, these inland sand ridges vary in size with widths from tens of metres to hundreds of metres and lengths exceeding 20 kilometres. These inland sand ridges are no longer active and some store groundwater in perched aquifers above layers of clay dominated geological material. Possible recharge mechanisms for these perched groundwater aquifers include direct infiltration of rainfall and recharge through the flood contact zone of the inland sand ridges. Callitris sp. (cypress pine) is commonly associated with inland sand ridges in southern Queensland; however the presence of Corymbia tessellaris and Eucalyptus interexta may be associated with perched aquifers and indicative of groundwater dependent ecosystems. Vegetation located on these inland sand ridges may depend on the subsurface presence of perched groundwater to meet.
Last updated: 10 April 2017
This page should be cited as:
Inland sand ridges, WetlandInfo 2013, Queensland Government, Queensland, viewed 20 December 2017, .