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Te Ahuahu
Te Ahuahu is a 373 m high basaltic scoria cone, in the Kaikohe-Bay of Islands volcanic field in New Zealand. It was the site of Hone Heke's pā that was the scene of the Battle of Te Ahuahu during the Flagstaff War The Flagstaff War, also known as Heke's War, Hōne Heke's Rebellion and the Northern War, was fought between 11 March 1845 and 11 January 1846 in and around the Bay of Islands, New Zealand. The conflict is best remembered for the actions of Hō ... of 1845–46. References Geological Society of New Zealand Forts in New Zealand Far North District Volcanoes of the Northland Region Volcanic cones Flagstaff War {{Northland-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scoria Cone
Scoria is a pyroclastic, highly vesicular, dark-colored volcanic rock that was ejected from a volcano as a molten blob and cooled in the air to form discrete grains or clasts.Neuendorf, K.K.E., J.P. Mehl, Jr., and J.A. Jackson, eds. (2005) ''Glossary of Geology'' (5th ed.). Alexandria, Virginia, American Geological Institute. 779 pp. It is typically dark in color (generally dark brown, black or purplish-red), and basaltic or andesitic in composition. Scoria is relatively low in density as a result of its numerous macroscopic ellipsoidal vesicles, but in contrast to pumice, all scoria has a specific gravity greater than 1, and sinks in water. The holes or vesicles form when gases that were dissolved in the magma come out of solution as it erupts, creating bubbles in the molten rock, some of which are frozen in place as the rock cools and solidifies. Scoria may form as part of a lava flow, typically near its surface, or as fragmental ejecta ( lapilli, blocks and bombs), for ins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kaikohe-Bay Of Islands Volcanic Field
The recently active basaltic Kaikohe-Bay of Islands volcanic field in the Northland Region of New Zealand is associated geographically with an older region of extinct volcanism to its north the Wairakau Volcanic Centre, meaning eruptions in this region have occurred over the last 20 million years. All the cones older than 2 million years have eroded away, leaving plateaus from Ōkaihau to Kerikeri and north to Whangaroa from the old andesite/dacite stratovolcanoes of the Wairakau Volcanic Centre and the ten million year old or more recent volcanoes in field towards the south. In the southern part of the field, around 12 small basaltic scoria cones, and a rhyolite dome erupted in the last 500,000 years around Kaikohe. The field is considered dormant, rather than extinct. Tectonics The field is part of the eastern Northland volcanic belt which extends south to the Whangārei volcanic field near Whangarei and the south east volcanics of the Taurikura volcanic complex as found in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Zealand
New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island country by area, covering . New Zealand is about east of Australia across the Tasman Sea and south of the islands of New Caledonia, Fiji, and Tonga. The country's varied topography and sharp mountain peaks, including the Southern Alps, owe much to tectonic uplift and volcanic eruptions. New Zealand's capital city is Wellington, and its most populous city is Auckland. The islands of New Zealand were the last large habitable land to be settled by humans. Between about 1280 and 1350, Polynesians began to settle in the islands and then developed a distinctive Māori culture. In 1642, the Dutch explorer Abel Tasman became the first European to sight and record New Zealand. In 1840, representatives of the United Kingdom and Māori chiefs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hone Heke
Honing is a kind of metalworking. Hone may also refer to: * Hone (name) (incl. Hōne), a list of people with the surname, given name or nickname * Hõne language Hõne is a Jukunoid language spoken in Gombe State and Taraba State, Nigeria Nigeria ( ), , ig, Naìjíríyà, yo, Nàìjíríà, pcm, Naijá , ff, Naajeeriya, kcg, Naijeriya officially the Federal Republic of Nigeria, is a countr ..., spoken in Gombe State and Taraba State, Nigeria * Hône, Italy {{dab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pa (Māori)
Pa, pa, PA, P.A. or pA may refer to: Businesses and organisations Government and military * Palestinian National Authority, also called Palestinian Authority, interim governing body of the Gaza Strip and part of the West Bank * Pakistan Army * People's Association (Singapore), a Singaporean grassroots statutory board * Philippine Army * Patrulla Águila * Planning Authority, a government agency of Malta Airlines * Pan American World Airways, IATA airline designator PA (to 1991) * Florida Coastal Airlines, IATA airline designator PA (1995–2010) * Airblue, IATA airline designator PA (from 2003) Other * Progressive Alliance, a political international of social-democratic, socialist and progressive political parties and organisations * Professional association, a type of business organization * PA Consulting Group * PA Media, a news agency in the UK and Ireland, formerly the Press Association * Produttori Associati, an Italian record label Linguistics * Pa (cuneiform), a cunei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flagstaff War
The Flagstaff War, also known as Heke's War, Hōne Heke's Rebellion and the Northern War, was fought between 11 March 1845 and 11 January 1846 in and around the Bay of Islands, New Zealand. The conflict is best remembered for the actions of Hōne Heke who challenged the authority of the British by cutting down the flagstaff on Flagstaff Hill (Maiki Hill) at Kororāreka (now Russell). The flagstaff had been a gift from Hōne Heke to James Busby, the first British Resident. The Northern War involved many major actions, including the Battle of Kororāreka on 11 March 1845, the Battle of Ōhaeawai on 23 June 1845 and the siege of Ruapekapeka Pā from 27 December 1845 to 11 January 1846. Causes The signing of the Treaty of Waitangi started on 6 February 1840, and conflict between the Crown and Māori tribes was to some extent inevitable after that. Ostensibly, the treaty established the legal basis for the British presence in New Zealand. However, the actions of Hōne Heke and Te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forts In New Zealand
A fortification is a military construction or building designed for the defense of territories in warfare, and is also used to establish rule in a region during peacetime. The term is derived from Latin ''fortis'' ("strong") and ''facere'' ("to make"). From very early history to modern times, defensive walls have often been necessary for cities to survive in an ever-changing world of invasion and conquest. Some settlements in the Indus Valley civilization were the first small cities to be fortified. In ancient Greece, large stone walls had been built in Mycenaean Greece, such as the ancient site of Mycenae (famous for the huge stone blocks of its 'cyclopean' walls). A Greek '' phrourion'' was a fortified collection of buildings used as a military garrison, and is the equivalent of the Roman castellum or English fortress. These constructions mainly served the purpose of a watch tower, to guard certain roads, passes, and borders. Though smaller than a real fortress, they ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Far North District
The Far North District is the northernmost territorial authority district of New Zealand, consisting of the northern part of the Northland Peninsula in the North Island. It stretches from North Cape and Cape Reinga / Te Rerenga Wairua in the north, down to the Bay of Islands, the Hokianga and the town of Kaikohe. The Far North District Council is based in Kaikohe, and has nine ward councillors representing three wards: Te Hiku (in the north), Kaikohe/Hokianga (in the west), Bay of Islands/Whangaroa (in the east). The council is led by the current mayor of Far North, Moko Tepania, who entered the role in 2022. Geography The Far North District is the largest of three territorial authorities making up the Northland Region. The district stretches from the capes and bays at the northern tip of the Aupouri Peninsula past Ninety Mile Beach to the main body of the Northland Peninsula, where it encompasses the Parengarenga Harbour, Whangaroa Harbour and Bay of Islands (on the e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanoes Of The Northland Region
A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates are diverging or converging, and most are found underwater. For example, a mid-ocean ridge, such as the Mid-Atlantic Ridge, has volcanoes caused by divergent tectonic plates whereas the Pacific Ring of Fire has volcanoes caused by convergent tectonic plates. Volcanoes can also form where there is stretching and thinning of the crust's plates, such as in the East African Rift and the Wells Gray-Clearwater volcanic field and Rio Grande rift in North America. Volcanism away from plate boundaries has been postulated to arise from upwelling diapirs from the core–mantle boundary, deep in the Earth. This results in hotspot volcanism, of which the Hawaiian hotspot is an example. Volcanoes are usually not created where two tectonic plates slide p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanic Cones
Volcanic cones are among the simplest volcanic landforms. They are built by ejecta from a volcanic vent, piling up around the vent in the shape of a cone with a central crater. Volcanic cones are of different types, depending upon the nature and size of the fragments ejected during the eruption. Types of volcanic cones include stratocones, spatter cones, tuff cones, and cinder cones. Stratocone Stratocones are large cone-shaped volcanoes made up of lava flows, explosively erupted pyroclastic rocks, and igneous intrusives that are typically centered around a cylindrical vent. Unlike shield volcanoes, they are characterized by a steep profile and periodic, often alternating, explosive eruptions and effusive eruptions. Some have collapsed craters called calderas. The central core of a stratocone is commonly dominated by a central core of intrusive rocks that range from around to over several kilometers in diameter. This central core is surrounded by multiple generations of l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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