0
4
TQ
SAND
CLAY (UNDIFF. ORIGIN)
Sandy clay and clayey sand
Strat Unit Name
Tertiary-Pleistocene rocks
Strat Unit Description
Undifferentiated Tertiary to Pleistocene rocks.
GIS Code
aI
4
198.2
Nhwsts
SANDSTONE
SHALE
Med-coarse gr. qtz. sandstone and shale
Strat Unit Name
Simmens Quartzite Member
Strat Unit Description
Quartzite, blocky; sandstone, cream.
GIS Code
N-hwsts
198.2
242.5
Nhwstc
SANDSTONE
SHALE
Fine-med. gr. sandstone, shale
Strat Unit Name
Corraberra Sandstone Member
Strat Unit Description
Sandstone, red, purple, slumped, silty. Some shale.
GIS Code
N-hwstc
242.5
450.2
Nhwstt
SHALE
SILTSTONE
Partly silty shale and siltstone
Strat Unit Name
Tregolana Shale Member
Strat Unit Description
Shale, red and green; siltstone.
GIS Code
N-hwstt
450.2
552.6
Nhueh
SANDSTONE
MUDSTONE
Fine-coarse gr. feldspathic, partly lithic sandstone, mudstone
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
552.6
566
Nhu2
SHALE
SILTSTONE
Interlaminated shale, siltstone and coarse gr. feldspathic sandstone
Strat Unit Name
Umberatana Group unit 2
Strat Unit Description
Undifferentiated Upalinna and Yerelina Subgroups; includes the superseded Willochra Subgroup.
GIS Code
N-hu----02