0
7
TQ
CLAY (UNDIFF. ORIGIN)
SAND
Sandy clay with med. gr. rounded qtz grains
Strat Unit Name
Tertiary-Pleistocene rocks
Strat Unit Description
Undifferentiated Tertiary to Pleistocene rocks.
GIS Code
aI
7
30
Nhueh
SANDSTONE
Fine-med. gr. well rounded sandstone
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
30
51
Nhu2
SILTSTONE
CLAY (UNDIFF. ORIGIN)
Clay over siltstone/fine gr. 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Undifferentiated Upalinna and Yerelina Subgroups; includes the superseded Willochra Subgroup.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
51
77
Nhunt
SHALE
DOLOMITE ROCK
Clay over laminated shale and dolomite
Strat Unit Name
Tapley Hill Formation
Strat Unit Description
Siltstone, grey to black, dolomitic and pyritic grading upwards to calcareous, thinly laminated, locally cross-bedded; dolomite, grey, flaggy to massive; limestone conglomerate, intraformational; greywacke.
GIS Code
N-hunt
77
80
Nhuntw
DOLOMITE ROCK
Strat Unit Name
Woocalla Dolomite Member
Strat Unit Description
Dolomite, yellow-brown, grey, massive bedding, oolitic, stromatolitic in part.
GIS Code
N-huntw
80
226.1
M-p
QUARTZITE
Partly silicified and hematitic quartzite
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