0
2
Qhr
CLAY (UNDIFF. ORIGIN)
GRAVEL
Red/brown clay & quartzite gravel.
Strat Unit Name
Holocene regolith/colluvial sediments
Strat Unit Description
Undifferentiated Holocene colluvial/regolith sediments.
GIS Code
H---r
2
78
Nhwsts
QUARTZITE
SANDSTONE
Interbedded quartzite, white, fine grained, sandstone, white, lesser red/brown & grey/green siltstone.
Strat Unit Name
Simmens Quartzite Member
Strat Unit Description
Quartzite, blocky; sandstone, cream.
GIS Code
N-hwsts
78
104
? Nhwstc
SANDSTONE
QUARTZITE
Sandstone & quartzite, fine grained, white.
Strat Unit Name
Corraberra Sandstone Member
Strat Unit Description
Sandstone, red, purple, slumped, silty. Some shale.
GIS Code
N-hwstc
104
270
Nhwstt
SILTSTONE
SHALE
Siltstone, chocolate brown, micaceous, finely bedded, with blue/green shale interbeds.
Strat Unit Name
Tregolana Shale Member
Strat Unit Description
Shale, red and green; siltstone.
GIS Code
N-hwstt
270
276
Nhwsn
DOLOMITE ROCK
SILTSTONE
Silty dolomite, buff, interbedded thin siltstone.
Strat Unit Name
Nuccaleena Formation
Strat Unit Description
Dolomite, thin, laminated, micritic, with interbedded shale near the top.
GIS Code
N-hwsn
276
473.1
Nhueh
SANDSTONE
Sandstone, red/brown-grey, poorly bedded to massive, friable, well rounded quartz, very minor felspar & rare pebbles, highly fractured below 403m.
Strat Unit Name
Whyalla Sandstone
Strat Unit Description
Sandstone, coarse-grained, bimodal, with large-scale crossbedding, sand grains very well rounded, spherical.
GIS Code
N-hueh
473.1
477.6
M-p
SANDSTONE
GREYWACKE
Sandstone & greywacke, angular quartz, felspar, GRV grains, with hematite-rich clayey matrix.
Strat Unit Name
Pandurra Formation
Strat Unit Description
Sandstone, quartz and lithic, m.g.-c.g., poorly sorted; sandstone, well-sorted, v.f.g.-m.g.; conglomerate, granule to pebble; mudstone; siltstone. Red, brown or purple with reduction spotting or mottling. Fluvial, large-scale cross-bedding and liesegang banding. Maximum deposition 1424±51 Ma (Rb-Sr).
GIS Code
M----p