0
4
Q
CLAY (UNDIFF. ORIGIN)
SAND
Brown sandy clay & silt
Strat Unit Name
Quaternary rocks
Strat Unit Description
Undifferentiated Quaternary rocks.
GIS Code
IH
4
48
Nhueh
SILTSTONE
SANDSTONE
Siltstone & sandstone with coarse rounded quartz grains
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
48
211.3
Nhunt
SILTSTONE
DOLOMITE ROCK
Grey laminated siltstone with local sandstone interbeds & rare dolomite laminae; rare chalcopyrite 56-60m; core: Dolomitic siltstone with dolomite laminae; local black shale & greywacke in lower part; pyritic
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
211.3
242
M-p
SANDSTONE
CONGLOMERATE
Pink feldspathic sandstone & conglomerate with clasts of quartzite, chert, BIF, volcanics & quartz; haematitic wacke from 232m
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