Strat Unit Name
Quaternary rocks
Strat Unit Description
Undifferentiated Quaternary rocks.
GIS Code
IH
1
26.5
Mta7
DOLERITE
Mg dolerite, sheared at lower boundary
Strat Unit Name
Gawler Range Volcanics unit 7
Strat Unit Description
Dolerite dykes within Glenloth Granite. Based on unit as on GAIRDNER. Age uncertain; map unit at present may include older dykes.
GIS Code
M-ta----07
26.5
54.3
AYm-g
GNEISS
Qtz-fsp gneiss, some chl; sheared upper & lower boundaries
Strat Unit Name
Glenloth Granite
Strat Unit Description
Granite, granodiorite, pink-brown to grey, quartz, microcline and plagioclase. With remnants of gneiss and biotite and hornblende schlieren. ~2509-2436 Ma.
GIS Code
AYm--g
54.3
81.5
? Mth
GRANITE
Granite: fsp, qtz, minor chl, mt
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
81.5
101.4
AYm-g
GNEISS
Granite gneiss; shear 95.6-99.6 with minor epid, ap, py
Strat Unit Name
Glenloth Granite
Strat Unit Description
Granite, granodiorite, pink-brown to grey, quartz, microcline and plagioclase. With remnants of gneiss and biotite and hornblende schlieren. ~2509-2436 Ma.
GIS Code
AYm--g