|Subregions of the Simpson-Strzelecki Dunefields Bioregion|
|Subregion||Geology||Characteristic landforms||Typical soils||Vegetation|
Parts of 9 land systems.
|Quaternary aeolian sand, minor alluvial sediments, and small areas of Cretaceous or Tertiary bedrock.||High parallel, linear dunes with streams and lakes extending from the ranges through the inter-dune depressions. Most lakes are freshwater. Small areas of stony plain.||Deep red quartz sands on dunes, heavy clays along stream lines. ||Sandhill wattle, mulga, turpentine, hopbush, rosewood, and canegrass occur on dunes and swales. Prickly wattle, canegrass, black box, and river red gum on creeks and lakes. Bladder saltbush, black bluebush, Mitchell grass, mulga, whitewood, turpentine and hopbush are present on stony plains.|
Parts of 12 land systems.
|Complex of Quaternary aeolian sands, alluvial and lake beds with well-developed beaches and lunettes.||Low sand dunes of variable orientation and shape, extensive sandplains. Large lake basins with fringing lunettes, some saline lakes possibly linked to groundwater.||Deep quartz sands on dunes, sand and clay lunettes, heavy clays along stream lines.||Mulga, whitewood with canegrass on dunes and black bluebush in swales. Mulga, whitewood, prickly wattle, black box, canegrass and river red gum along creeks. Canegrass, lignum, prickly wattle, black box, old man saltbush and thorny saltbush occur on lakes. Lunettes support open mulga, turpentine and pearl bluebush.|
Parts of 11 land systems.
|Quaternary aeolian sands from local sources, alluvial and lake sediments, with outcrops of Cretaceous or Tertiary bedrock.||Sandplains and low dunes, marginal to extensive areas of floodout country. Tablelands and stony downs on bedrock.||Deep red to yellow quartz sand, heavy clays in alluvial areas. Stony loams on downs.||Mulga, whitewood, ironwood, bimble box, and canegrass are present on sandplains. Mulga, bimble box, grasses and forbs occur on floodouts. Mulga, dead finish, desert poplar, silver cassia, punty bush, turkey bush, bluebush and grasses occur on tablelands and downs.|