0
45
? TQ
SAND
SILT
Brown sand/silt; sludge samples only
Strat Unit Name
Tertiary-Pleistocene rocks
Strat Unit Description
Undifferentiated Tertiary to Pleistocene rocks.
GIS Code
aI
45
68.35
Nhwst
SANDSTONE
GRAVEL
Grey-brown-green-red sandstone with flat layered grit & pebble interbeds; clasts of volcanics, flat pebbles of dolomite
Strat Unit Name
Tent Hill Formation
Strat Unit Description
Shale; sandstone; quartzite. White, red and purple, slumped, laminated.
GIS Code
N-hwst
68.35
202.19
Nhunt
SILTSTONE
DOLOMITE ROCK
Grey flat laminated siltstone with interbedded dolomite & dolomite conglomerate; local cryptalgal laminae, crossbeds, ripples, slumps; traces pyrite; from 193m traces copper sulphides; at 196m a 2mm calcite + galena vein parallel to bedding
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
202.19
401.25
Nxcae
VOLCANICS
Red-green vesicular volcanic, some individual flows recognisable; vesicles filled with calcite+chlorite+-albite; local white alteration spots; local traces sulphides; minor local haematite veining/alteration
Strat Unit Name
Beda Basalt
Strat Unit Description
Basalt, amygdaloidal to massive, tholeiitic, subaerial, flows 1-30m thick, altered by chlorite, sericite, hematite, amphibole, epidote and K-feldspar.
GIS Code
N-xcae