0
8
Q
CLAY (UNDIFF. ORIGIN)
FERRICRETE
brown, clay and quartz
Strat Unit Name
Quaternary rocks
Strat Unit Description
Undifferentiated Quaternary rocks.
GIS Code
IH
8
76.5
Ma
IGNEOUS FELSIC
weathered, quartz, muscovite and clay
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-a
76.5
80.5
Lh
MARBLE
diopside marble containing diopside and quartz
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h
80.5
83.6
Ma
IGNEOUS FELSIC
potassium feldspar-quartz
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-a
83.6
87.6
Lh
MARBLE
diopside marble containing diopside and quartz
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h
87.6
90.9
Lh
CHERT
AMPHIBOLITE
chert containing amphibolites
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h
90.9
93.7
Ma
GRANITE
quartz-feldspar
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-a
93.7
98
? Lh
CLAY (UNDIFF. ORIGIN)
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h
98
103.1
Lh
MARBLE
diopside marble containing diopside and ankerite
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h
103.1
107.3
Ma
? VOLCANIC BRECCIA (UNDIFFERENTIATED)
polylithic dyke
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-a
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-a
112.6
123.5
Ma
VOLCANIC BRECCIA (UNDIFFERENTIATED)
polylithic dyke
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-a
123.5
135.3
? Lh
CLAY (UNDIFF. ORIGIN)
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h
135.3
141.6
Lh
CHERT
VOLCANIC BRECCIA (UNDIFFERENTIATED)
dirty' chert composed of quartz-sericite-potassium feldspar, intruded by polylithic dyke
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h
141.6
164.3
Lh
CLAY (UNDIFF. ORIGIN)
CHERT
clay with minor chert beds
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h
164.3
174.1
Lh
CHERT
chert composed of silica and ankerite
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h
174.1
215
Lh
MARBLE
calcitic and diopsidic marble composed of calcite-diopside-magnetite
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h
215
225.6
Lh
CALCSILICATE ROCK
MARBLE
siliceous calc-silicate containing diopside-calcite-silica and diopside marble
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h
225.6
225.9
Lh
FAULT BRECCIA
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h
225.9
250.5
Lh
CALCSILICATE ROCK
calcsilicate containing silica-calcite-diopside-magnetite with calcitic marble horizons
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h
250.5
276.3
Lh
MARBLE
mottled magnetite marble' composed of diopside-calcite-magnetite
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h
276.3
329.4
Lh
MARBLE
calcitic and diopsidic marble composed of calcite-diopside-magnetite
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h
329.4
335.1
Ma
GRANITE
potassium feldspar-quartz
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-a
335.1
349.7
Lh
CHERT
chert containing sulphides
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h
349.7
351.6
Ma
GRANITE
potassium feldspar-quartz
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-a
351.6
380.8
Lh
CHERT
calcitic and diopsidic marble composed of calcite-diopside-magnetite
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h
380.8
381.6
Ma
GRANITE
potassium feldspar-quartz
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-a
381.6
400
Lh
MARBLE
calcite marble
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h
400
407.2
Ma
GRANITE
plagioclase-quartz
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-a
407.2
429.1
Lh
MARBLE
calcitic and diopsidic marble composed of calcite-diopside-magnetite
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h
429.1
433.2
Ma
GRANITE
quartz-plagioclase
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-a
433.2
465.7
Lh
MARBLE
calcitic marble
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h
465.7
466
Lh
FAULT BRECCIA
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h
466
470
Lh
MARBLE
calcitic marble
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h
470
472.4
Lh
IRON FORMATION
diopsidic iron formation containing magnetite-diopside-sillimanite-garnet
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h
472.4
499.45
Lh
MARBLE
CALCSILICATE ROCK
diopside marble and siliceous calc-silicate containing diopside-silica-calcite-magnetite
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h
499.45
499.8
Lh
FAULT BRECCIA
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h
499.8
563.1
Lh
MARBLE
CALCSILICATE ROCK
diopsidic and calcitic marble and siliceous calc-silicate containing diopside-silica-calcite-magnetite
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h
563.1
575
Lh
MARBLE
CALCSILICATE ROCK
mottled magnetite marble' composed of diopside-calcite-magnetite
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h
575
576.3
Lh
CALCSILICATE ROCK
siliceous calc-silicate
Strat Unit Name
Hutchison Group
Strat Unit Description
Metasediments, quartzitic, pelitic and calc-silicate; iron formation; marble; amphibolite.
GIS Code
L--h