0
26.55
TQ
SAND
Undifferentiated Tertiary-Qaternary deposits.
Strat Unit Name
Tertiary-Pleistocene rocks
Strat Unit Description
Undifferentiated Tertiary to Pleistocene rocks.
GIS Code
aI
26.55
71.7
Erha
DOLOMITE ROCK
CONGLOMERATE
Dolomitic limestone, minor shale, siltstone sandstone. Basal conglomerate, sandstone and shale.
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
71.7
233.7
Nhwstt
SHALE
SANDSTONE
Red-brown shale and minor sandstone.
Strat Unit Name
Tregolana Shale Member
Strat Unit Description
Shale, red and green; siltstone.
GIS Code
N-hwstt
233.7
238.22
Nhwsn
DOLOMITE ROCK
SHALE
Massive dolomite overlain by shale and dolomitic siltstone.
Strat Unit Name
Nuccaleena Formation
Strat Unit Description
Dolomite, thin, laminated, micritic, with interbedded shale near the top.
GIS Code
N-hwsn
238.22
596.3
M-p
SANDSTONE
CONGLOMERATE
Hematitic sandstone, subordinate conglomerate and minor siltstone/shale.
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
596.3
596.8
N-g
BASALT
Fine-grained basaltic intrusive.
Strat Unit Name
Gairdner Dolerite
Strat Unit Description
Dolerite dykes locally intruded by black porphyritic basalt. Sm-Nd ages 867+/-47 and 802+/-35Ma; U-Pb age 827+/-6Ma.
GIS Code
N----g
596.8
597.6
M-p
SANDSTONE
Hematitic 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
597.6
600.35
N-g
BASALT
Massive basaltic intrusive.
Strat Unit Name
Gairdner Dolerite
Strat Unit Description
Dolerite dykes locally intruded by black porphyritic basalt. Sm-Nd ages 867+/-47 and 802+/-35Ma; U-Pb age 827+/-6Ma.
GIS Code
N----g
600.35
616.05
M-p
SANDSTONE
Hematitic 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
616.05
674.6
N-g
DOLERITE
Doleritic intrusive.
Strat Unit Name
Gairdner Dolerite
Strat Unit Description
Dolerite dykes locally intruded by black porphyritic basalt. Sm-Nd ages 867+/-47 and 802+/-35Ma; U-Pb age 827+/-6Ma.
GIS Code
N----g