*Optional Field Trips registration is now closed.
*Some Field trips may be cancelled due to low interest. Effected delegates will be contacted direclty with alternative options or refunds.
GEOTHERMAL EPITHERMAL SYSTEMS OF NEW ZEALAND FIELDTRIP
Saturday 25 – Tuesday 28 November
Leaders: Kathy Campbell, Ayrton Hamilton, Julie Rowland (University of Auckland)
This trip is run in conjunction with the New Zealand Geothermal Workshop, Rotorua.
Day 1 (25th of November) includes field stops at Waiotapu, Te Kopia, Atiamuri spring.
Day 2 (26th November) includes field stops at Waimungu, Karangahake gold deposit, Waihi goldfield.
Day 3 (27th November) includes field stops at Kohuamuri Sinter, Hot water Beach.
Day 4 (28th November) includes a field stop at Te Karo Bay (Sailors Grave).
Depart: Rotorua 9am 25 November, ride share back to Auckland.
Cost: $320 including transport, accommodation, entrance to Waimungu;
Note: costs excludes food, limited to 20 participants.
WAIHEKE ISLAND GEOLOGY, WINE AND TERROIR
Tuesday 28 November
Leader: Paul Augustinus, University of Auckland
This trip includes return minibus and ferry from Halfmoon Bay to Waiheke Island, lunch at a winery, and wine tasting at the University of Auckland’s Goldie Estate. A selection of key geological sites around Waiheke Island will also be visited via minibus.
Depart: University at 9am, return 5pm
RANGITOTO ISLAND FIELDTRIP
Tuesday 28 November
Leaders: David Lowe, University of Waikato and Peter de Lange, Department of Conservation, Auckland
The trip is scheduled from ~9:00 am to 3:00 pm. Rangitoto is arguably Auckland’s most beautiful and omnipresent landscape feature. Guarding the entrance to the Waitemata Harbour, Rangitoto is a symmetrical, ~6-km wide, basaltic shield volcano that last erupted ~550–500 cal. yr BP (c. 1400–1450 AD), not long after the arrival and settlement of Polynesians in the Auckland region (c. 1280 AD). It is by far the largest, and the youngest, volcano in the Auckland Volcanic Field (AVF). The AVF consists of approximately 53 individual eruptive centres, all of which are within the boundaries of the Auckland urban area. Recent research (mainly cryptotephra studies on sediments from Lake Pupuke and wetlands on Motutapu Island, and analyses of a 150-m-long drill core obtained in February, 2014) has revealed that Rangitoto has a much more complex history that previously thought, and may be better viewed as a ‘volcanic complex with multiple episodes of eruptions’. In summary, activity commenced c. 6000 cal. yr BP involving minor effusive and pyroclastic volcanism until 650 cal. yr BP, when a voluminous shield-building phase took place from c. 650–550 cal. yr B.P. The final phase of activity, from c. 550–500 cal. yr BP, was explosive and less voluminous, producing scoria cones at the summit.
The flora on Rangitoto are unique among the islands in the Hauraki Gulf because of the island’s young age, and the fact that technically Rangitoto is an “oceanic” island. Because Rangitoto emerged from the sea and was never connected to the mainland, then its flora and fauna are derived entirely from long distance dispersal. The island contains around 582 vascular plant taxa of which 228 (39%) are indigenous. Ecologically, Rangitoto is marked by the dominance of pohutukawa (Metrosideros excelsa): the island supports the single largest tract of this forest type in New Zealand. Other special botanical features make the island a truly fascinating place to visit.
Depart: 9am Ferry – meet at Downtown Ferry Terminal building (99 Quay St), Auckland, by 8.50 am. The Fullers Ferry will depart from Pier 2 of the Ferry Terminal at 9.15 am. Tickets can be purchased from Fullers Ticket Office on Pier 1.
Cost: $35 included fieldtrip guidebook ad packed lunch. In addition, you will need to purchase your own return ferry ticket ($30 return) on the day
Note: You need boots or strong trainers/shoes, a raincoat/windproof is essential, and you must carry a warm jumper in backpack in case of bad weather. Showers are always possible but, if sunny, a sun hat and sun block are needed. Further information is here
NEW VIEW OF THE MIOCENE WAITEMATA BASIN: INITIATION AND FLUID MOBILITY
Saturday 2 December to Sunday 3 December
Leaders: Kathy Campbell, Bernhard Sporli
On this two-day field trip north of Auckland we will visit two key localities of the Waitemata Basin to explore the paleoenvironmental setting of early Miocene sedimentation upon greywacke basement rocks (Mathesons Bay) at the onset of the modern subduction plate boundary, and to examine abundant evidence for fluid mobilisation and methane seep signatures associated with deep marine turbidites (Mathesons Bay, Tindalls Bay) in upper Waitemata strata. The field trip will focus on a range of well exposed and spectacular Waitemata Basin outcrops – including cold seeps, unconformities, trace and body fossils, liquefaction, gravity flows etc. We have booked the UoA marine lab accommodation located at the beautiful Goat Island for the trip.
Terrain: MB – relatively easy walking but bouldery in places (<2km); TB – 2-3km of flat beach.
Depart: University in minibuses 9am Saturday 2 December, returning late afternoon Sunday 3 December.
Cost: $80 including food, accommodation for the Saturday night and transport
Maximum 20 participants
URBAN ENGINEERING GEOLOGY AND LANDSLIDE HAZARDS FOR A CITY ON THE MOVE
Saturday 2 December
Leaders: Warwick Prebble (Beca), Martin Brook and Nick Richards (University of Auckland)
The fieldtrip includes visiting some subdivisions on slippery slopes, crumbling cliffs retreating back into established suburbs, the Waterview Connection Tunnel, the Southern Landslide Zone and Beachlands in east Auckland.
Depart: University in minibuses 9am Saturday 2 December, return late afternoon.
Cost: $40 includes transport and packed lunch
FOSSIL HIGHLIGHTS OF AUCKLAND
Saturday 2 December to Sunday 3 December
Leaders: Bruce Hayward and Ian Geary
You will visit some exciting new fossil sites and the best of the rest. Stops include late Eocene leaf and freshwater mussels of the Drury Coal Measures, NZ´s only soft body worm fossils and the world´s best submarine-canyon-wall trace fossils (Bartrum Bay, Muriwai; early Miocene), newly recognised Pliocene estuarine and fluvial deposits containing diverse fossil fruit and leaves and second NZ records of fossil bracket fungi and sea grass, and source of NZ´s first well preserved fossil mosses and lichens (Beachlands & Weymouth, Pliocene), rich estuarine Kaawa Shellbeds (moulds; Weymouth, Pliocene), Early Pleistocene moa footprints (Muriwai), Middle Pleistocene swamp kauri deposit (Ihumatao), NZ´s best fossil forest preserved in a lava flow (Takapuna) and NZ´s best fossil forest knocked over and preserved beneath Late Pleistocene basaltic base-surge tuff deposits (Maungataketake). Make own arrangements for accommodation Fri and Sat nights. Transport will leave each day from University. Optional drop off at Mangere Airport on Sun for flights after6.30 PM. All except the Sat PM visit to Bartrum Bay are easy access but will require footwear for soft sediment up to 3 cm deep. Access to Bartrum Bay involves reasonable physical ability to negotiate a steep descent/ascent.
Depart: University in minibuses at 9 am each day, arrive back late afternoon each day
Cost: $80 includes transport and 2 x packed lunches
Note: please do not book flights home before 6.30pm on Sunday 3 December.
HISTORIC BROKEN HILLS GOLD EPITHERMAL AU-AG MINE, COROMANDEL
Saturday 2 December
Leader: Julie Rowland (University of Auckland)
The underground Broken Hills gold mine is exceptional for its history, geology and low footprint. This day trip will include an introduction to the epithermal systems in the Coromandel, a visit to the mine, and access to core and samples. Numbers limited.
Depart: 8.30 am University, return 6 pm
Cost: $40 includes transport and packed lunches
Note: limited to 11 places