Strat Unit Name
Neoproterozoic rocks
Strat Unit Description
Undifferentiated Neoproterozoic rocks.
GIS Code
N-
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
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
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
542.7
621.2
? Mta
VOLCANICLASTIC ROCK
VOLCANIC SANDSTONE (PENECONTEMP. WITH VOLCANISM)
Volcaniclastic
Strat Unit Name
Gawler Range Volcanics
Strat Unit Description
Dacite, rhyodacite and rhyolite lava; basalt to andesite, tholeiitic; ignimbrite; tuff; volcanic breccia. A to I-type, 1592-1591 Ma.
GIS Code
M-ta
621.2
631.2
Mta
SILTSTONE
Strat Unit Name
Gawler Range Volcanics
Strat Unit Description
Dacite, rhyodacite and rhyolite lava; basalt to andesite, tholeiitic; ignimbrite; tuff; volcanic breccia. A to I-type, 1592-1591 Ma.
GIS Code
M-ta
631.2
667
Mta
VOLCANICLASTIC ROCK
CONGLOMERATE
Volcaniclastic
Strat Unit Name
Gawler Range Volcanics
Strat Unit Description
Dacite, rhyodacite and rhyolite lava; basalt to andesite, tholeiitic; ignimbrite; tuff; volcanic breccia. A to I-type, 1592-1591 Ma.
GIS Code
M-ta
667
743.2
Mta
VOLCANICLASTIC ROCK
Volcaniclastic
Strat Unit Name
Gawler Range Volcanics
Strat Unit Description
Dacite, rhyodacite and rhyolite lava; basalt to andesite, tholeiitic; ignimbrite; tuff; volcanic breccia. A to I-type, 1592-1591 Ma.
GIS Code
M-ta
743.2
753.8
Mta
SILTSTONE
Strat Unit Name
Gawler Range Volcanics
Strat Unit Description
Dacite, rhyodacite and rhyolite lava; basalt to andesite, tholeiitic; ignimbrite; tuff; volcanic breccia. A to I-type, 1592-1591 Ma.
GIS Code
M-ta
753.8
774.5
Mta
VOLCANICLASTIC ROCK
Strat Unit Name
Gawler Range Volcanics
Strat Unit Description
Dacite, rhyodacite and rhyolite lava; basalt to andesite, tholeiitic; ignimbrite; tuff; volcanic breccia. A to I-type, 1592-1591 Ma.
GIS Code
M-ta
774.5
801.2
Yx
METASEDIMENT
BRECCIA (UNDIFF. ORIGIN)
Strat Unit Name
Wallaroo Group
Strat Unit Description
Schist, quartz-feldspar-mica; argillite; rhyolite, porphyritic, fine grained, A-type; limestone; siltstone; felsic volcanics; sandstone, medium to coarse grained, poorly sorted; amphibolite; dolerite; basalt. 1772-1735 Ma.
GIS Code
Y--x
801.2
842
Yx
METASILTSTONE
Strat Unit Name
Wallaroo Group
Strat Unit Description
Schist, quartz-feldspar-mica; argillite; rhyolite, porphyritic, fine grained, A-type; limestone; siltstone; felsic volcanics; sandstone, medium to coarse grained, poorly sorted; amphibolite; dolerite; basalt. 1772-1735 Ma.
GIS Code
Y--x
842
852.9
Yx
CALCSILICATE ROCK
Strat Unit Name
Wallaroo Group
Strat Unit Description
Schist, quartz-feldspar-mica; argillite; rhyolite, porphyritic, fine grained, A-type; limestone; siltstone; felsic volcanics; sandstone, medium to coarse grained, poorly sorted; amphibolite; dolerite; basalt. 1772-1735 Ma.
GIS Code
Y--x
852.9
899.7
Yx
METASILTSTONE
CALCSILICATE ROCK
Strat Unit Name
Wallaroo Group
Strat Unit Description
Schist, quartz-feldspar-mica; argillite; rhyolite, porphyritic, fine grained, A-type; limestone; siltstone; felsic volcanics; sandstone, medium to coarse grained, poorly sorted; amphibolite; dolerite; basalt. 1772-1735 Ma.
GIS Code
Y--x
899.7
903.2
Yx
CALCSILICATE ROCK
Strat Unit Name
Wallaroo Group
Strat Unit Description
Schist, quartz-feldspar-mica; argillite; rhyolite, porphyritic, fine grained, A-type; limestone; siltstone; felsic volcanics; sandstone, medium to coarse grained, poorly sorted; amphibolite; dolerite; basalt. 1772-1735 Ma.
GIS Code
Y--x
903.2
912
Yx
METASILTSTONE
CALCSILICATE ROCK
Strat Unit Name
Wallaroo Group
Strat Unit Description
Schist, quartz-feldspar-mica; argillite; rhyolite, porphyritic, fine grained, A-type; limestone; siltstone; felsic volcanics; sandstone, medium to coarse grained, poorly sorted; amphibolite; dolerite; basalt. 1772-1735 Ma.
GIS Code
Y--x
912
916.62
Yx
CALCSILICATE ROCK
Strat Unit Name
Wallaroo Group
Strat Unit Description
Schist, quartz-feldspar-mica; argillite; rhyolite, porphyritic, fine grained, A-type; limestone; siltstone; felsic volcanics; sandstone, medium to coarse grained, poorly sorted; amphibolite; dolerite; basalt. 1772-1735 Ma.
GIS Code
Y--x
916.62
1257
Yx
METASILTSTONE
CALCSILICATE ROCK
Strat Unit Name
Wallaroo Group
Strat Unit Description
Schist, quartz-feldspar-mica; argillite; rhyolite, porphyritic, fine grained, A-type; limestone; siltstone; felsic volcanics; sandstone, medium to coarse grained, poorly sorted; amphibolite; dolerite; basalt. 1772-1735 Ma.
GIS Code
Y--x
1257
1656
Mth
QUARTZ FELDSPAR PORPHYRY
Strat Unit Name
Hiltaba Suite
Strat Unit Description
Granite, syenite, quartz monzonite, granodiorite, monzodiorite: coarse, megacrystic to equigranular, to fine-grained, granophyric, equigranular or porphyritic. Undeformed to locally strongly deformed. Minor mafic to ultramafic intrusive rocks. I to A-type, ~1600-1575 Ma.
GIS Code
M-th
1656
1836
Yx
CALCSILICATE ROCK
Strat Unit Name
Wallaroo Group
Strat Unit Description
Schist, quartz-feldspar-mica; argillite; rhyolite, porphyritic, fine grained, A-type; limestone; siltstone; felsic volcanics; sandstone, medium to coarse grained, poorly sorted; amphibolite; dolerite; basalt. 1772-1735 Ma.
GIS Code
Y--x