Dunedin Volcano

Total Page：16

File Type：pdf, Size：1020Kb

Volcano Fact Sheet Dunedin Volcano Description • This long extinct volcano was Dunedin harbour and peninsula are probably around 1000m high but has remnants of the now extinct Dunedin volcano. been eroded down over millions of Lava flow years. The highest point today is Mt It was a shield volcano - a broad volcano that is built up from fluid lava Cargill at 700m. Magma chamber flowing down its gently sloping sides. Features Cause Last eruptive activity • The Dunedin City area, Portobello • These volcanoes occur away from • The rocks are dated at about 10 million Peninsula and Otago Harbour are all part plate boundaries and subduction zones. years ago. of the volcano. They probably arise from hot spots in the Monitoring • The hills surrounding Dunedin (Mt mantle and produce mainly basalt magma. • None is necessary because the volcano Cargill, Flagstaff, Saddle Hill, Signal Hill Eruptive history is extinct. and Harbour Cone) are remnants of the • It began erupting around 16 million volcanic crater. years ago and had 3 main eruptive • The sea has drowned the lower slopes phases. Between phases the slopes of the of the volcano. volcano were forested and traces of these • The area between Port Chalmers and forests are preserved between lava flows Portobello was the vent of the volcano in swamp and lake deposits. and is now part of Otago Harbour. Eruptive material • Outcrops of lava and ash are visible • These are pyroclastic flows, lava flows around the city and harbour. and fall deposits made mainly from basalt magma. Type • This is an extinct shield volcano. www.gns.cri.nz.

Copy Link

Recommended publications

Data and Information Committee Agenda 9 June 2021 - Agenda
Data and Information Committee Agenda 9 June 2021 - Agenda Data and Information Committee Agenda 9 June 2021 Meeting is held in the Council Chamber, Level 2, Philip Laing House 144 Rattray Street, Dunedin Members: Hon Cr Marian Hobbs, Co-Chair Cr Michael Laws Cr Alexa Forbes, Co-Chair Cr Kevin Malcolm Cr Hilary Calvert Cr Andrew Noone Cr Michael Deaker Cr Gretchen Robertson Cr Carmen Hope Cr Bryan Scott Cr Gary Kelliher Cr Kate Wilson Senior Officer: Sarah Gardner, Chief Executive Meeting Support: Liz Spector, Committee Secretary 09 June 2021 02:00 PM Agenda Topic Page 1. APOLOGIES No apologies were received prior to publication of the agenda. 2. PUBLIC FORUM No requests to address the Committee under Public Forum were received prior to publication of the agenda. 3. CONFIRMATION OF AGENDA Note: Any additions must be approved by resolution with an explanation as to why they cannot be delayed until a future meeting. 4. CONFLICT OF INTEREST Members are reminded of the need to stand aside from decision-making when a conflict arises between their role as an elected representative and any private or other external interest they might have. 5. CONFIRMATION OF MINUTES 3 Minutes of previous meetings will be considered true and accurate records, with or without changes. 5.1 Minutes of the 10 March 2021 Data and Information Committee meeting 3 6. OUTSTANDING ACTIONS OF DATA AND INFORMATION COMMITTEE RESOLUTIONS 8 Outstanding actions from resolutions of the Committee will be reviewed. 6.1 Action Register at 9 June 2021 8 7. MATTERS FOR CONSIDERATION 9 1 Data and Information Committee Agenda 9 June 2021 - Agenda 7.1 OTAGO GREENHOUSE GAS PROFILE FY2018/19 9 This report is provided to present the Committee with the Otago Greenhouse Gas Emission Inventory FY2018/19 and report.
[Show full text]
Flood Hazard of Dunedin's Urban Streams
Flood hazard of Dunedin’s urban streams Review of Dunedin City District Plan: Natural Hazards Otago Regional Council Private Bag 1954, Dunedin 9054 70 Stafford Street, Dunedin 9016 Phone 03 474 0827 Fax 03 479 0015 Freephone 0800 474 082 www.orc.govt.nz © Copyright for this publication is held by the Otago Regional Council. This publication may be reproduced in whole or in part, provided the source is fully and clearly acknowledged. ISBN: 978-0-478-37680-7 Published June 2014 Prepared by: Michael Goldsmith, Manager Natural Hazards Jacob Williams, Natural Hazards Analyst Jean-Luc Payan, Investigations Engineer Hank Stocker (GeoSolve Ltd) Cover image: Lower reaches of the Water of Leith, May 1923 Flood hazard of Dunedin’s urban streams i Contents 1. Introduction ..................................................................................................................... 1 1.1 Overview ............................................................................................................... 1 1.2 Scope .................................................................................................................... 1 2. Describing the flood hazard of Dunedin’s urban streams .................................................. 4 2.1 Characteristics of flood events ............................................................................... 4 2.2 Floodplain mapping ............................................................................................... 4 2.3 Other hazards ......................................................................................................
[Show full text]
Language Is Life the Worldview of Second Language Speakers of Māori Jeanette King, University of Canterbury
Language is Life The Worldview of Second Language Speakers of Māori Jeanette King, University of Canterbury Second-language adult speakers of Māori form the large bulk of proficient speakers of the language. The engagement these adults have with the Māori language is motivated by a strongly-held worldview centered on personal transformation which enables them to engage with and maintain a relationship with the Māori language. This worldview appears to have a different focus to that held by national and tribal language planners and speakers of other indigenous languages. One factor that languages undergoing revitalization have in common is a group of language fanatics, people who are passionately dedicated to revital- izing their heritage language. In New Zealand there are many Māori who are devoted to becoming fluent second language speakers of Māori. These people are typically involved with the teaching profession and have children who they are raising in a Māori speaking environment. These people are the necessary intermediate stage: the second language speaking generation which is needed to produce a new generation of first language speakers of Māori. The zeal which these adult second language learners have for the language is something that they have sustained for a number of years. What motivates people such as these to become fluent second language speakers of their heritage language? Are they motivated by the idea of saving their language? Or is their motivation more personal? This paper examines the worldview of second lan- guage adult speakers of Māori in New Zealand and contrasts their perspective with that of language planners and speakers of other indigenous languages.
[Show full text]
Beach Profile Change at St. Clair Beach, Dunedin
GEOGRAPHY IS KNOWING WHERE THE SURF IS PUMPING KAHUTARA MAY 1993 PHOTO: W. HAWKE BEACH PROFILE CHANGE AT ST. CLAIR BEACH DUNEDIN A thesis submitted in partial fullfillment of the requirements for the Degree of Master of Science in Geography in the University of Canterbury by M. J. Dyer University of Canterbury 1994 111 CONTENTS 1 Chapter One: Introduction 1.1: Introduction 3 1.2: Theoretical 5 1.3: Thesis 15 1.4: Thesis 16 Chapter Two: Introduction To The Study Area 2.1: 19 2.2: Local Geology «<«<••·······················-·······-··· ................................................................................................................. 19 2.3: The Otago Continental 24 2.3.1 Hydraulic ....... ...,,5 ,_ ..,.., ________·------··---- 25 2.3.1.1 Currents 25 2.3.1.2 26 2.3.1.3 27 2.3 .1.4 Sediment Transport 27 2.3.2 Sedimentation ______________ 28 2.3.2.1 The Biogenic Sand/Gravel Facies 29 2.3 .2.2 The Relict/Palimpsest Sand Facies... .. ·-· ...... 30 2.3.2.3 The Relict Terrigenous Gravel Facies 31 2.3.2.4 The Modem Terrigenous Sand Facies 31 2.4 Features of the Otago Coast_.......... 35 2.5 The Two Study ....,..,,.,...,H...,.., _____________ 39 2.5.1 Tomahawk 39 2.5 .2 St. Clair - Ocean Beach 42 2.6 47 lV Chapter Three: The Wind Environment 3.1 Introduction __"_" __ ,., ....... _""-·~"-...................... ___" ..................... "." ............. _.......... __ 49 3.2 The Otago Climatic Setting. _______.____ _ 50 3.3 Previous 50 3.4 The Influence of Local winds on the Nearshore Environment..... 53 3.5 Aeolian Sand 54 3.6 56 57 3.7.1 Individual Months _____________ 57 3.7 .2 Seasonal Analysis ________ 61 3.7.3 Total Study Period __ .
[Show full text]
Brief Observations of Vegetation Following a Fire on Flagstaff, Dunedin
TRILEPIDEA Newsletter of the New Zealand Plant Conservation Network NO. 198 Brief observations of vegetation following a fi re on Flagstaﬀ , Dunedin May 2020 John Barkla ([email protected]) Deadline for next issue: On Monday 16 September 2019 a fi re swept through c. 30 ha of montane tussock- Friday 19 June 2020 shrub/fl axland on the popular Pineapple Track that traverses Flagstaff (668 m) above SUBMIT AN ARTICLE Dunedin. Billowing smoke and fl ames were clearly evident from the city and it took TO THE NEWSLETTER eight helicopters and 35 fi remen to contain the fi re. Dampening down continued Contributions are welcome through Tuesday, and surveillance of hot spots was ongoing for several days. Th e to the newsletter at any Pineapple Track was closed for a week. time. The closing date for articles for each issue is Evidence from sub-fossil logs suggests there was a cover of montane forest on Flagstaff approximately the 15th of until about 1300 AD. Chionochloa rigida-dominant tussocklands are thought to have each month. been present since at least the mid 19th century and maintained by periodic fi res Articles may be edited and used in the newsletter and/ (Wardle & Mark 1956). A hot spring fi re in late 1976 burnt c. 100 ha. Given its close or on the website news page. proximity to Dunedin, the area around Flagstaff has been a convenient research site The Network will publish for investigating the eff ects of fi re on snow tussock, e.g. Gitay et al. (1991). almost any article about plants and plant conservation I walked through the burn site on 28 September, almost two weeks aft er the fi re with a particular focus on the started (Fig.
[Show full text]
Brothers Volcano
Volcano Fact Sheet Brothers Volcano Description • This is a submarine (undersea) volcano in the Kermadec Arc, 400km north east of White Island. • Brothers is three times bigger than White Island. • It has an oval shape approx 13 km long and 8 km wide. • It has a 3km wide summit caldera with walls 300-500m high. • The caldera walls are very steep and there is evidence of landslides. • A dome rises 350m from the caldera floor. • The caldera floor is 1850m below sea level. ~1.5km below A computer generated 3D image of sea level Brothers Volcano. Caldera Dome Brothers is a submarine caldera volcano - a volcano that has collapsed into itself, forming a large ring crater. Seafloor Black smoker chimneys form when hydrothermal fluid jets react with cold Magma sea water. Features Type • Brothers Volcano Currently has more • This is an active submarine caldera. hydrothermal activity than any other Cause volcano in the Kermadec Arc. • It was created by subduction of the • The hydrothermal vents (hot springs) on Pacific Plate below the Australian Plate. the caldera wall have formed a large field of ‘black smoker’ chimneys up to 8m high. Eruptive history • This is unknown at present. When hot hydrothermal fluid jets out of Eruptive material a vent, it mixes with cold sea water and • The crater walls reveal layers of dacite a chemical reaction occurs. This causes lava flows. Dacite is between rhyolite and metals in the fluid to precipitate out of andesite in viscosity. the solution. The plumes of black ‘smoke’ created by this reaction settle and form Last eruptive activity deposits of metallic minerals on the crater • Unknown.
[Show full text]
Flagstaff Community Church 25Th April, 2021 "He Is Not Here, He Has Risen
Flagstaff Community Church 25th April, 2021 MODERATOR’S MESSAGE: ANZAC DAY "He is not here, he has risen.” Mark 16:6 This is surely the heart of Christianity: Jesus risen from the tomb. The cross is not victorious. The crucifixion of Jesus on the cross is not a Roman victory. The Jewish religious authorities were bewildered and lost. Jesus died on the cross. This then, was all that mattered to both the political and the religious authorities of the time - Jesus is risen. ANZAC Day is a remembrance and honouring of armed personnel who served in the wars involving New Zealand. Most especially, of our alliance with Australia in these global conflicts. For all our sporting rivalries, Australia remains our nearest and most dependable alliance across many levels of cooperation and defence. Armed conflict has cost and lost many lives. It is sad and unfortunate when human nature desires to dominate and control. The hope is that we will not revisit these rivalries, conflicts, wars, and that no more lives will be needlessly lost. Where does Christianity come into the ugly and brutal outcome of war? Faith sustains us and reminds us of our humanity. Diplomacy and statesmanship help us to keep peace and goodwill. In past wars, German Christians fought Allied Christians. How sad, but it was the reality of their time. Today, Christians are challenged to fight only for Jesus and for his Kingdom. This is our challenge now – stand up and fight for Jesus. He is risen. Christianity has a saying that Jesus died for the forgiveness of our sins.
[Show full text]
New Zealand Wars Sources at the Hocken Collections Part 1 – 1840S
Reference Guide New Zealand Wars Sources at the Hocken Collections Part 1 – 1840s Fragment of the Treaty of Waitangi in te Reo Māori. Facsimiles of the Declaration of Independence and the Treaty of Waitangi. Wellington: Govt. Printer, 1976 Hocken Collections/Te Uare Taoka o Hākena, University of Otago Library Nau Mai Haere Mai ki Te Uare Taoka o Hākena: Welcome to the Hocken Collections He mihi nui tēnei ki a koutou kā uri o kā hau e whā arā, kā mātāwaka o te motu, o te ao whānui hoki. Nau mai, haere mai ki te taumata. As you arrive We seek to preserve all the taoka we hold for future generations. So that all taoka are properly protected, we ask that you: place your bags (including computer bags and sleeves) in the lockers provided leave all food and drink including water bottles in the lockers (we have a lunchroom off the foyer which everyone is welcome to use) bring any materials you need for research and some ID in with you sign the Readers’ Register each day enquire at the reference desk first if you wish to take digital photographs Beginning your research This guide gives examples of the types of material relating to the New Zealand Wars held at the Hocken. All items must be used within the library. As the collection is large and constantly growing not every item is listed here, but you can search for other material on our Online Public Access Catalogues: for books, theses, journals, magazines, newspapers, maps, and audiovisual material, use Library Search|Ketu.
[Show full text]
Dunedin Skyline Walk Notes for Trampers
tained by the Department of Conservation, heads over DUNEDIN SKYLINE WALK a small knob with an old trig on it, and then drops down NOTES FOR TRAMPERS to the State Highway at Leith Saddle. The well formed The section of the Skyline Walk between Sullivans Dam The concept of a walkway along the entire northern and graded lower section has replaced a notoriously and Mt Cargill is managed and maintained with volun- Dunedin Skyline from Flagstaff to Mt Cargill has been boggy section that dated from the 1980’s. teer labour from Otago Tramping and Mountaineering the vision of local trampers for many years. Now, the The Otago Tramping and Mountaineering Club, in con- Club - the OTMC has put in place a management plan Skyline Walk is a reality, and the seven different sec- junction with the Dunedin City Council have developed with the goal of keeping this unique track open and tions offer a wide variety of tramping experiences. the two sections of track leading from Sullivans Dam to available for all to use. Flagstaff and the Pineapple Track is perhaps the most Mt Cargill. The first section, the ‘Cloud Forests of Leith’, The Escarpment Track in particular can be prone to popular section of the Skyline Walk, with many taking connects Sullivans Dam with the powerlines. This sec- windfall and other damage, especially during heavy the opportunity for the stunning views of the city from tion is well developed, and features a unique form of snow or wind. The sections that are under the remain- the easily accessible summit of Flagstaff.
[Show full text]
BEN RUDD's PROPERTY Flagstaff Scenic Reserve, Dunedin
Directions (refer to map on reverse) BEN RUDD’S PROPERTY From the Bullring carpark on Whare Flat—Flagstaff Flagstaff Scenic Reserve, Dunedin Road, walk 30 minutes up the firebreak track to : the cairn (and silver beech cluster)www.otmc.nz on the left mark- ing the top of the access track to Ben Rudd’s hut site and shelter. It is 15 minutes down to the clear- ing where you will find this pleasant spot for lunch and can see the foundations of Ben Rudd’s hut. An alternate route is from Booth Road to Ben Rudd’s property, via the Pineapple Track. A further route is from Swampy Summit, which itself can be accessed via the Leith Saddle Walkway. By using the circuit of tracks to the summit of Flagstaff a pleasant round trip can be completed, including excellent views of Dunedin City. There is a visitors’ book at the shelter, inside a clear The Otago Tramping and Mountaineering Club, plastic container. Please sign it to show you have along with the Ben Rudd’s Management Trust, visited - this helps the Trust gain a record of usage of the property, which can be used in applications welcome visitors to our Ben Rudd’s property, for funding of the ongoing restoration work. located on the western slopes of Flagstaff. The Trust and the OTMC owners actively encourage This privately owned 45 ha property is the for- full public access to the entire property but, in mer home of Ben Rudd, a well known Dunedin keeping with the adjacent scenic reserve, do ask farmer and gardener in the early 1900’s.
[Show full text]
Te Reo Māori: Analysing the Colonial History of the Native Māori Language of Aotearoa (New Zealand)
WARREN, Krystal Te Rina. Te reo mãori: analysing the colonial history of the native mãori language of Aotearoa (New Zealand). Revista Lin- guíStica / Revista do Programa de Pós-Graduação em Linguística da Universidade Federal do Rio de Janeiro. Volume 13, n.1 jan de 2017, p. 349-366. ISSN 2238-975X 1. [https://revistas.ufrj.br/index.php/rl] Te Reo MāoRi: analysing The colonial hisToRy of The naTive MāoRi language of aoTeaRoa (new Zealand) Krystal Te Rina Warren1 abstract: Colonisation has a dramatic impact on indigenous languages. Language revitalisation cannot be about the language alone; it must also analyse the contexts of power that relegate our languages to the margins of existence. This article briefly explores the colonial history of the indigenous Māori people of Aotearoa (New Zealand) and the decline of the Māori language. It then offers an overview of Māori responses to colonisation and considers Māori pathways for the revitalisation of the Māori language and the Māori spirit. Keywords: Māori language, colonisation, decolonial responses. Resumo: A colonização exerce um impacto dramático sobre as línguas indígenas. A revitalização linguística não pode ser sobre a língua somente; deve-se também analisar os contextos de poder que relegam nossas línguas às margens da existência. Este artigo explora brevemente a história colonial do povo indígena Maori de Aotearoa (Nova Zelândia) e o declínio da língua Maori. Oferece-se, em seguida, uma visão ampla das respostas dos Maori à colonização, considerando os caminhos de revitalização da língua e do espírito Maori. Palavras-chave: língua Maori, colonização, respostas de descolonização. Tēnei te mihi atu ki te reo Māori o tēna iwi, o tēnā hapū, huri rauna i te ao.
[Show full text]
1 WELCOME to WAKARI SCHOOL You and Your Children Are Important
WELCOME TO WAKARI SCHOOL You and your children are important to our school and our community. We look forward to your involvement and hope your association with Wakari School is both rewarding and enjoyable. This booklet provides general information about the school. If you have any additional questions, feel free to phone (telephone 476 3140), or call into the school office between 8.30am and 3.30pm. OUR SCHOOL’S VISION Wakari School’s vision is that our children grow and develop to be Happy, Confident Learners. We work hard to help children reach their personal best according to their abilities and learning needs, by providing the means for achievement across a balanced range of curriculum content and within a caring, secure environment. SCHOOL ORGANISATION Wakari is a Primary Contributing School. It caters for children from five to eleven years of age. (Years 1-6) Our school organisation is usually based around 12 to 14 composite classes and is divided into three syndicates. Each has a team of teachers working with the support of a senior teacher. Syndicate teachers meet regularly to plan programmes, evaluate their effectiveness and to utilise their resources effectively. While children spend most of their time with their home room teacher, syndicate interchanges and team teaching are encouraged. In this way children become accustomed to working with a range of teachers and benefit from the skills, interests and experience of all staff. A major school emphasis is to keep class sizes small to maximise children’s learning opportunities. THE SCHOOL BOARD OF TRUSTEES The school is managed by its Board of Trustees.
[Show full text]