A volcanic field is a spot of the earth's crust that is prone to localized volcanic activity. Examples include the San Francisco volcanic field in Arizona the Auckland volcanic field in New Zealand and the Desolation Lava Field in British Columbia, Canada. One type is the monogenetic volcanic field. Earth (IPA: , often referred to as the Earth, Terra, the World or Planet Earth) is the third planet in the solar system in terms of distance from the Sun, and the fifth largest. ... Earth cutaway from core to exosphere. ... This article is about volcanoes in geology. ... SP Crater in the field is a cinder cone with a basalt lava flow that extends for 4 miles (6 km) The San Francisco volcanic field is an area of volcanoes in northern Arizona, USA. The field covers 1800 square miles (4700 km2) the southern boundary of the Colorado Plateau. ... It has been suggested that Arizona Governors Mansion be merged into this article or section. ... The Auckland volcanic field is a monogenetic volcanic field on the North Island of New Zealand. ... The Desolation Lava Field is a volcanic field located around the Mount Edziza volcanic complex, British Columbia, Canada. ... Motto: Splendor Sine Occasu (Latin: Splendour without diminishment) Official languages English de facto (none stated in law) Flower Pacific dogwood Tree Western Redcedar Bird Stellers Jay Capital Victoria Largest city Vancouver Lieutenant-Governor Iona Campagnolo Premier Gordon Campbell (BC Liberal) Parliamentary representation - House seats - Senate seats 36 6 Area... Monogenetic volcanic fields are areas of scattered volcanic vents; so that roughly speaking a monogenetic field is a type of volcano. ...
Volcanic activity from an eruption at a site within the Auckland volcanicfield could produce serious problems in the day to day existence for those who live in the Auckland region and for New Zealanders supported by Auckland’s business and industry.
Knowledge of the type and effects of volcanic activity are based on studies of volcanic deposits in the Auckland area and on analogues of similar eruptions from similar types of volcanoes elsewhere in the world.
Although volcanic earthquakes rarely exceed an intensity of 8 on the Modified Mercalli Scale (this scale is based on the felt intensity of an earthquake and is different from the Richter scale based on the amount of energy released), they would be destructive if an eruption occurred in or near a built up area.
Basalts of this field are subalkalic and alkalic and erupted between 5.89 and 4.7 Ma.
Field, petrographic, major element, trace element, and isotopic data were used to document the origin of phase 2 intermediate rocks by mixing (combined with fractional crystallization) of mafic and felsic magmas similar to bimodal phase 3 rocks.
The volcanic section to the west of Mt. Perkins consists of a basal section of basalt overlain by a thick section of andesite and subordinate dacite, in turn overlain by a thick section of dacite and rhyolite flows and domes.
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