0
0.1
Qhe
SAND
Red fine grained aeolian sand.
Strat Unit Name
Holocene aeolian sediments
Strat Unit Description
Undifferentiated Holocene aeolian sediments.
GIS Code
H---e
0.1
4
Qha8
COLLUVIUM
Red stained course grained quartz rich colluvium.
Strat Unit Name
Holocene alluvial/fluvial unit 8
Strat Unit Description
Holocene low angle slope deposits, gibber outwash.
GIS Code
H---a---08
4
16
Qp\ca
CALCRETE
GRIT
Coarse grained colluvium (gravels and grits, wide range of lithologies) cemeneted by calcrete and quartz rich grit layers cemented by calcrete.
Strat Unit Name
Pleistocene calcrete
Strat Unit Description
Undifferentiated Pleistocene calcrete.
GIS Code
I-----ca
16
46
YMb
GNEISS
Yellow to grey fine grained quartz/feldspar/garnet gneiss weathered to limionite. Grey fine grained quartz/pyroxene/feldspar/magnetite/garnet gneiss and common Chlorite and epidote veins and alteration (fresh).
Strat Unit Name
Birksgate Complex
Strat Unit Description
Gneiss, quartzofeldspathic; orthogneiss, felsic to ultramafic; paragneiss, pelitic to calcic: iron formation. Granulite to amphibolite facies. Protolith ages ~1680–1550 Ma.
GIS Code
YMb
46
64.85
Mrg
PYROXENITE
GABBRO
Grey - Light grey medium - coarse grained pyroxene /biotite/plagioclase mafic and ultramafic intrusive with rare bronze mineral? Biotite tan/brown in colour and is usaually coarse grained. Contains white-green, possible chlorite?/smectite? vein.
Strat Unit Name
Giles Complex
Strat Unit Description
Layered mafic-ultramafic intrusions: gabbro, norite, peridotite, pyroxenite, anorthosite and troctolite. ~1085–1040 Ma.
GIS Code
M-rg
64.85
66
M23
GABBRO
Grey medium grained possible pyroxene (60%)/plagiolcase (40%) dyke with trace biotite and rare bronze mineral. Contains coarse grained plagioclase (grey/blue) and possible trace titanium rich biotite zones. Plagiolcase rich zones may contain a slight fabr
Strat Unit Name
Mesoproterozoic unit 23
Strat Unit Description
Undifferentiated doleritic/gabbroic dykes of the Musgrave Block.
GIS Code
M-------23
66
66.8
Mrg
GABBRO
Grey/green coarse grained pyroxene (50%)/plagioclase (40%)/chlorite & serpentine? (5-10%) mafic intrusion with trace titanium rich biotite + rare magnetite and bronze mineral. Contains dark green chlorite veining at 120 & 35 degrees. Core broken along ve
Strat Unit Name
Giles Complex
Strat Unit Description
Layered mafic-ultramafic intrusions: gabbro, norite, peridotite, pyroxenite, anorthosite and troctolite. ~1085–1040 Ma.
GIS Code
M-rg
66.8
72.95
M23
GABBRO
Grey medium grained pyroxene (50%)/ plagioclase (45%) mafic with trace biotite (5%) + rare pyrite and bronze mineral. Contains significant black veining (chlorite?) at 115 &135 degrees, white veining at 15 &35 degrees and a fault at 71.4 - 71.5m .
Strat Unit Name
Mesoproterozoic unit 23
Strat Unit Description
Undifferentiated doleritic/gabbroic dykes of the Musgrave Block.
GIS Code
M-------23
72.95
73.45
Mrg
MYLONITE
Blue/grey very fine grained felsic mylonite with with buff (possible feldpsar rich) and green altered layers. Buff layers contain fine grained highly fracture garnet. Fabric at 40 degrees. Core generally broken and fractured.
Strat Unit Name
Giles Complex
Strat Unit Description
Layered mafic-ultramafic intrusions: gabbro, norite, peridotite, pyroxenite, anorthosite and troctolite. ~1085–1040 Ma.
GIS Code
M-rg
73.45
88
Mrg
GABBRO
PYROXENITE
Grey/blue medium-coarse grained pyroxene/plagioclase/biotite mafic and ultramafic intrusive with rare magnetite, titanium rich biotite (bronze colour) and bronze mineral. Biotite green/brown in colour. Contains small minor plagioclase and titanium rich bt
Strat Unit Name
Giles Complex
Strat Unit Description
Layered mafic-ultramafic intrusions: gabbro, norite, peridotite, pyroxenite, anorthosite and troctolite. ~1085–1040 Ma.
GIS Code
M-rg