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The Halibut Field is an oil field, within the Gippsland Basin offshore of the Australian state of Victoria. The oil field is located approximately 64 km offshore of southeastern Australia. The total area of this field is 26.9 km2 and is composed of 10 mappable units.
The geology of the West Coast of New Zealand's South Island is divided in two by the Alpine Fault, which runs through the Region in a North-East direction. To the West of the fault Paleozoic basement rocks are interluded by plutones and both are unconformably covered in a sedimentary sequence. To the East of the Alpine Fault are the Mesozoic Alpine Schist and Greywacke of the Southern Alps. There are numerous active faults throughout the region.
The Waitemata Group is an Early Miocene geologic group that is exposed in and around the Auckland Region of New Zealand, between the Whangarei Harbour in the North and the Raglan Harbour in the South. The Group is predominantly composed of deep water sandstone and mudstone (flysch). The sandstone dominated units form the cliffs around the Waitemata Harbour and rare more resistant conglomerates underlie some of Auckland's prominent ridges.
Ōpōtiki District is a territorial authority district in the eastern Bay of Plenty Region on the North Island of New Zealand. It stretches from Kutarere and the eastern shore of Ōhiwa Harbour in the west to Cape Runaway in the north-east, and south from Ōpōtiki town up the Waioeka River into the Raukumara Range. Ōpōtiki District Council is headquartered in Ōpōtiki, the largest town.
The Whangārei volcanic field is an area of intra-plate monogenetic volcanism located near the city of Whangārei, North Island, New Zealand. It was last active between 260,000 to 319,000 years ago and continues to be potentially active as a low-velocity seismic zone in the crust exists beneath Whangārei, which is interpreted to be a body of partial melt. This mantle source has been coupled to the lithosphere for about 8 million years. As the field has potentially been active at low frequency for millions of years, with 100,000 years or more between events it might best be regarded as dormant. The recent vents active in the last million years include some dacite in composition. Composition details are freely available for most of the field but many vents do not have ages.
References
- ↑ 2007 Gisborne earthquake
- ↑ The Gisborne Tsunami
- ↑ DA Feary & EA Pessagno 1980. An early Jurassic age for chert within the Early Cretaceous Oponae Melange (Torlesse Supergroup), Raukumara Peninsula, New Zealand. NZ Journal of Geology & Geophysics 23: 623-628.
- ↑ New Zealand Institute of Geological and Nuclear Sciences (GNS Science) - a New Zealand government Crown Research Institute.
- ↑ GNS New Zealand Geological Maps.
- ↑ "Geology of the Raukumara Area, Mazengarb, C., Speden, I.G., GNS Science, 2001. (1 : 250 000 map)". Archived from the original on 2009-10-09. Retrieved 2009-08-15.