1
472000 mE 472000 mE 474000 mE 474000 mE 476000 mE 476000 mE 478000 mE 478000 mE 480000 mE 480000 mE 6544000 mN 6544000 mN 6546000 mN 6546000 mN 6548000 mN 6548000 mN 6550000 mN 6550000 mN 6552000 mN 6552000 mN 6554000 mN 6554000 mN 6556000 mN 6556000 mN 6558000 mN 6558000 mN 6560000 mN 6560000 mN 6562000 mN 6562000 mN 6564000 mN 6564000 mN Tunkillia Regolith-Landform Map Regolith-landform descriptions Small incised channels over areas of low relief that are asociated with contemporary drainage. Red-brown, clay/silt and very fine to coarse, sub- rounded to sub-angular, very poorly sorted quartzose sand, with gravel to small pebble fragments of calcrete and silcrete. Open woodland of Acacia aneura and Casuarina pauper with a Maireana sedifolia understory and crytogam mats. Aed Aap 2 Ephemeral Lakes consisting of red-brown to yellow-brown, clay/silt and fine, sub-rounded, moderately sorted quartzose sand cutans. Abundant mud-cracks and cryptogam mats. Open woodland of Eucalypt ssp., Acacia aneura, and Casuarina pauper. Aed Aed Aed Aed Aed Aed CHfs Apd SMep Aed 1 Aed CHfs Apd Apd Apd Apd CHep 1 CHep 2 CHep 2 CHep 2 CHep 2 CHep 2 CHep 2 CHep 2 CHep 2 CHep 2 CHep 2 CHep 2 CHep 2 CHep 2 CHep 2 Aed CHep 2 CHep 2 CHep 2 CHep 1 CHep 1 CHep 2 CHep 1 Apd Apd Apd Apd Apd CHep 2 CHep 1 CHep 1 CHep 1 SMep Apd Apd Apd Apd Apd Apd Apd Aed Aap 2 ISu ISu ISu ISu ISu Low lying areas within dune swales associated with palaeo and contemporary alluvial sediments. Red-brown clay/silt and fine, sub-rounded, moderately sorted quartzose sand with Fe-oxide cutans. Acacia aneura thickets with occasional Maireana sedifolia. Abundant cryptogam mats. Depositional plain corresponding with floodouts along alluvial systems. Red-brown clays and very fine to coarse, sub-angular to sub-rounded, very poorly sorted quartzose sand with Fe-oxide cutans. Slightly calcareous in places. Chenopod shrubland of Maireana sedifolia and Atriplex vesicaria with abundant Acacia aneura or Casuarina pauper (over calcareous soils), and cryptogam surface mats. Minor small shallow drainage depressions. Floodout areas around ephemeral lakes. Red- brown, clay/silt and fine, sub-rounded, moderately sorted quartzose sand with Fe-oxide cutans. Abundant mud-cracks and crytogam mats. Open woodland of Eucalypt ssp., Acacia aneura, and Casuarina pauper. Low relief landsurface with numerous narrow shallow drainage depressions. Red-brown clays and very fine to coarse, sub-angular to sub- rounded, very poorly sorted quartzose sand with Fe-oxide cutans. Slightly calcareous in places. Chenopod shrubland of Maireana sedifolia with minor Acacia aneura and Casuarina pauper. Abundant cryptogam mats. Low relief landsurfaces associated with floodout areas of drainage depressions. Red-brown, clay/ silt and fine to coarse, sub-angular to sub- rounded, very poorly sorted quartzose sand with Fe-oxide cutans. Slightly calcareous in places. Abundant gravel lag of calcrete and silcrete. Open woodland of Acacia aneura and Casuarina pauper with abundant Maireana sedifolia. Areas of slight topographic relief consisting of red- brown, fine to very coarse, sub-angular to sub- rounded, moderately sorted quartzose sand with Fe-oxide cutans. Abundant calcrete with minor silcrete and dolomite gravel to pebble lag. Chenopod shrubland of Maireana sedifolia with minor Acacia aneura and Casuarina pauper. Abundant cryptogam mats. Areas of slight topographic relief consisting of red- brown, fine to very coarse, sub-angular to sub- rounded, poorly sorted quartzose sand with Fe- oxide cutans. Abundant calcrete with minor silcrete and dolomite gravel to pebble lag. Open woodland of Acacia aneura and Casuarina pauper with abundant Maireana sedifolia. Abundant cryptogam mats. CHep 2 CHep 1 CHep 1 CHep 1 Apd CHep 1 CHep 2 CHep 2 CHep 2 CHep 2 CHep 1 CHep 1 CHep 1 CHep 1 CHep 2 Apd Apd CHep 1 CHep 1 CHep 2 Apd CHep 2 ISps 2 ISps 1 ISps 1 ISps 1 ISps 1 ISu ISu ISps 1 ISps 1 ISps 1 ISps 1 ISps 1 ISps 1 ISps 1 ISps 1 ISps 1 ISps 1 ISps 1 ISps 1 ISps 1 ISps 1 ISps 1 ISps 1 ISps 1 ISps 1 ISps 1 ISps 1 ISps 1 ISps 2 Sand plains associated with interdunal swales. Red-brown, fine to medium, sub-rounded to rounded, moderately to well sorted quartzose sand with Fe-oxide cutans. Minor sub-rounded pebble calcrete or silcrete lag within the larger swales. Open woodland of Eucalyptus concinna, Acacia ramulosa and Acacia ligulata with minor Casuarina pauper, Maireana sedifolia, Bossiaea walkeri, and Cratystylis conocephala. Abundant cryptogam mats. Areas of slight topographic relief associated with the dunefield margins. Red-brown, fine to medium, sub-rounded to rounded, moderately sorted quartzose sand with Fe-oxide cutans. Minor sub- rounded pebble calcrete or silcrete lag. Chenopod shrubland of Maireana sedifolia with abundant Acacia aneura and Casuarina pauper. Abundant cryptogam mats. Dunefield of E-W longitudinal dunes. Red-brown, medium, rounded, well to very well sorted quartzose sand with Fe-oxide cutans. Open woodlands of Acacia aneura, Acacia ramulosa and Eucalyptus socialis with tussock grasses and cryptogam surface mats. Low gently rounded bedrock exposures of weathered coarse grain, K-feldspar rich granite. Alluvial Sediments Colluvial Sediments Aeolian Sediments Saprolith Lacustrine sediments Aap 1 Aap 1 Aap 1 Aap 1 Aap 1 Aap 1 Aap 1 Aap 1 Aap 1 Aap 1 Aap 2 Aap 2 Aap 2 Aap 2 Aap 2 Aap 2 Aap 2 Aap 2 Aap 2 Aap 2 Aap 2 Aap 2 Aap 2 Aap 2 Aap 2 Aap 2 Aap 2 Aed Aed Lpd 1 Lpd 2 Lpd 1 Lpd 1 Lpd 1 Lpd 1 Lpd 2 Lpd 2 Lpd 2 Lpd 1 CHep 2 CHep 2 CHfs CHfs CHfs CHfs CHfs CHfs CHfs CHfs CHfs CHfs CHfs CHfs CHfs CHfs CHfs CHfs CHfs KEY Regolith A - Alluvial sediments CH - Colluvial sediments IS - Aeolian sediments L - Lacustrine sediments SM - Weathered bedrock ap - Alluvial plain ed - Drainage depression ep - Erosional plain fs - Sheet-flood fan pd - Depositiona plain ps - Sandplain u - Dunefield Landforms 0 2km 0.4 0.8 1.2 1.6 Grid North Geodatic datum of Australia 1994 Zone 53 Compiled by R.C. Dart 2008 Sample location points 6546000mN 6554000mN 6562000mN 472000mE 480000mE
