0
27
Tmw
SAND
Unconsolidated, mature, well-sorted, non-calcareous quartz sand.
Strat Unit Name
Watchie Sandstone
Strat Unit Description
Basal conglomerate, sand lenses, lower fine-grained sand, upward coarsening sand on top. Regressive lacustrine.
GIS Code
m----w
27
42
CP-b
CLAYSTONE
Brown claystones.
Strat Unit Name
Boorthanna Formation
Strat Unit Description
Diamictite with shale intercalations in the basal unit, the upper unit with rhythmically bedded coarse and fine-grained clastics. Subaqueous deposition of glacial debris transported as mud flows.
GIS Code
CP---b
42
118
Erha
DOLOMITIC LIMESTONE
MUDSTONE
Massive grey dolomitic limestone and mudstone, intraformational mud clast/limestone breccia and conglomerate. Minor red-brown shale, oolitic dolostone and microbialite/stromatolite in basal part.
Strat Unit Name
Andamooka Limestone
Strat Unit Description
Limestone, grey, off-white, brown, buff, pink, recrystallised, commonly dolomitised, locally sandy or pyritic. Intraclastic or oolitic interbeds; siliciclastics at base. Local trilobite fragments, archaeocyatha, calcimicrobes. Peritidal/subtidal shelf.
GIS Code
E-rh-a
118
140.64
Nhwsts
SANDSTONE
SILTSTONE
Fine-grained quartzitic sandstone and minor siltstone intercalations.
Strat Unit Name
Simmens Quartzite Member
Strat Unit Description
Quartzite, blocky; sandstone, cream.
GIS Code
N-hwsts
140.64
350
Nhwstt
SHALE
SANDSTONE
Red-brown laminated shale and fine-grained sandstone.
Strat Unit Name
Tregolana Shale Member
Strat Unit Description
Shale, red and green; siltstone.
GIS Code
N-hwstt
350
363.42
Nhwsn
SHALE
DOLOMITE ROCK
Red-brown shale with thin grey dolomite layers.
Strat Unit Name
Nuccaleena Formation
Strat Unit Description
Dolomite, thin, laminated, micritic, with interbedded shale near the top.
GIS Code
N-hwsn
363.42
363.6
? MN
CONGLOMERATE
White quartz pebble conglomerate.
Part of Neoproterozoic Adelaidean or Mesoproterozoic Pandurra Formation?
Strat Unit Name
Mesoproterozoic-Neoproterozoic rocks
Strat Unit Description
Undifferentiated Meso-Neoproterozoic rocks.
GIS Code
MN
363.6
499.45
M-p
SANDSTONE
SILTSTONE
Red-brown medium- to coarse-grained, pebbly sandstone with minor siltstone intercalations.
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