34th International Geological Congress (IGC): AUSTRALIA 2012

WA-3 Geology of the Kimberley. Paleoproterozoic Tectonics and
Mineralization, Neoproterozoic Glaciations, Devonian Barrier
Reef (continued)
122 34 th IGC AUSTRALIA 2012 | Fourth Circular
Day 5 - Tuesday 31st July 2012 - Pentecost River Crossing to Ord River
After breakfast take in the views of Cockburn Range (Bastion Group) and
Cambridge Gulf, followed by views of Devonian sandstones and the Halls Creek
Fault. There may be the option of a scenic helicopter flight to Purnalulu from Turkey
Creek Roadhouse. View the Argyle diamond mine and Carr Boyd Group (1200 Ma).
Today you will also see Tickalara Metamorphics (c. 1865 Ma oceanic island arc),
Dougalls Suite (c.1850 Ma) and Sally Downs Supersuite (1835-1805 Ma): syn- to
post-collisional granites.
Arrive at your campsite for overnight and dinner.
Overnight: Camp near Ord River Crossing, Great Northern Highway
Meals: B / L / D
Day 6 – Wednesday 1st August 2012 - Ord River to Panton River
After breakfast travel to see Speewah Group unconformity and Whitewater
Volcanics followed by the Paperbark Supersuite granite and gabbro: magma
mingling. Layered mafic-ultramafic Panton intrusion (c. 1855 Ma).
Arrive at your campsite for overnight and dinner.
Overnight: Camp near Panton River
Meals: B / L / D
Day 7 – Thursday 2nd August 2012 - Panton River to Saw Pit Gorge
After breakfast visit Ding Dong Downs Formation (c. 1910 Ma) and Halls Creek
Group (1880-1840 Ma) stratigraphy (passive to active margin). Followed by a visit
to Little Mount Isa (Pb-Zn), Old Halls Creek (WA’s 1st gold rush in 1888), Moola
Bulla Formation: late orogenic basin and Neoproterozoic glacials (Duerdin and
Albert Edward Groups).
Arrive at your campsite for overnight and dinner.
Overnight: Camp near Saw Pit Gorge
Meals: B / L / D
Day 8 – Friday 3rd August 2012 - Saw Pit Gorge to Fitzroy Crossing
After breakfast you will visit more Sally Downs Supersuite granites, Neoproterozoic
glacial: Louisa Downs Group unconformity and Permian unconformity: exhumed
Devonian reef. Later in the afternoon there’s an optional boat tour in Giekie Gorge.
Arrive at your campsite for overnight and dinner.
Overnight: Camp at Fitzroy Lodge
Meals: B / L / D
Day 9 – Saturday 4th August 2012 - Fitzroy Crossing to Broome
Depart and travel to Broome after breakfast and arrive in time for afternoon flights –
own arrangements for onward flights to Brisbane.
Meals: B / L
Equipment Required: Suitable field clothing for warm to hot weather. As the tour involves visiting
outcrops that require some scrambling, sturdy shoes or preferably boots and long
trousers/sleeves are recommended as protection against the sun, rough rocks and
vegetation (Spinifex, cane grass etc). Sun protection of SPF 30+ sun cream and
hat is important along with insect repellent. All camping equipment is provided,
including sleeping bags. Bring toiletries and your own towel.