0
8
TQ
CLAY (UNDIFF. ORIGIN)
SAND
Sandy clay with gravel at base
Strat Unit Name
Tertiary-Pleistocene rocks
Strat Unit Description
Undifferentiated Tertiary to Pleistocene rocks.
GIS Code
aI
8
84.2
Nhunt
SILTSTONE
DOLOMITE ROCK
Siltsotne with dolomite laminae, massive 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
84.2
85.2
Nxcak
CONGLOMERATE
SAND
Silicified conglomerate with grit
Strat Unit Name
Backy Point Formation
Strat Unit Description
Sandstone; conglomerate, pink to red, locally haematitic.
GIS Code
N-xcak
85.2
89.5
Nxcae
MAFIC EXTRUSIVE
SANDSTONE
Fine gr. vesicular basic volcanic and med. gr. silicified sandstone
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
89.5
91
M-p
SANDSTONE
Fine-coarse gr. vaguely laminated sandstone
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