TYNDALL Scale: 1:25 000 DIGITAL GEOLOGICAL ATLAS 1:25 000 SCALE SERIES 0 500 1000 1500 2000 2500M TYNDALL, SHEET 3835

Total Page:16

File Type:pdf, Size:1020Kb

TYNDALL Scale: 1:25 000 DIGITAL GEOLOGICAL ATLAS 1:25 000 SCALE SERIES 0 500 1000 1500 2000 2500M TYNDALL, SHEET 3835 Department of Infrastructure Energy and Resources MINERAL RESOURCES TASMANIA TYNDALL Scale: 1:25 000 DIGITAL GEOLOGICAL ATLAS 1:25 000 SCALE SERIES 0 500 1000 1500 2000 2500m TYNDALL, SHEET 3835 380000mE 81 82 83 84 85 86 87 88 89 390000mE 91 92 93 94 95 96 97 98 99 400000mE 5360000mN 5360000mN 65 80 NEWTON Geor 80 70 Creek 60 PEAK 70 85 50 80 65 85 ge 60 75 78 45 55 28 55 20 81 60 Newton 80 70 20 68 75 70 Anthon 20 55 87 35 55 80 50 22 75 10 20 38 70 78 72 y 70 45 Creek 20 25 20 35 70 40 45 23 26 RANGE 37 48 65 River 80 40 18 70 46 17 10 18 59 80 59 65 50 16 16 12 20 20 55 70 5 25 57 27 10 83 75 77 26 35 80 80 37 30 27 73 80 60 57 10 50 30 46 67 46 70 48 12 60 15 53 60 83 11 80 65 38 40 70 36 25 70 42 67 65 50 7 70 87 32 72 68 85 7 50 75 34 13 11 4 33 75 74 70 50 66 5 80 STICHT 15 80 70 60 40 12 40 58 16 20 58 68 33 9 52 LAKE 80 70 35 25 85 2675 80 42 55 75 32 ROLLESTON85 65 75 80 20 83 30 65 10 89 80 72 10 80 17 67 12 30 70 85 65 27 5 68 22 57 70 10 10 85 65 45 50 80 52 23 50 78 75 63 75 6 13 88 80 33 12 65 80 30 75 75 68 25 55 64 85 54 86 27 30 80 57 26 30 50 26 33 15 30 70 70 40 40 10 30 35 25 3 75 57 28 18 74 65 57 5 17 17 20 88 70 70 32 11 30 30 18 80 42 75 10 40 80 23 22 2550 40 86 35 60 15 45 15 85 53 30 13 10 10 33 8 9 10 70 62 15 MT 25 70 82 10 25 88 32 TYNDALL 25 82 80 30 7 1745 65 30 85 67 3 28 15 21 50 42 50 17 45 25 11 20 27 65 WALFORD RIVER 20 25 9 13 60 PEAK 58 23 13 65 ELDON 7 15 25 LAKE 75 80 70 80 20 12 56 7 WHITHA 78 85 56 40 60 HUNTLEY 50 M 28 17 11 77 ROAD 10 85 56 60 15 17 4 72 68 60 67 27 8 8 65 47 38 45 56 75 60 73 15 25 60 40 WHITHAM 13 5 80 15 HONY 31 35 22 BLUFF 85 27 50 ANT 32 18 14 14 67 17 10 60 18 70 25 7 70 Lake 17 12 65 58 15 10 Tyndall 17 Tyndall 78 85 55 LAKE 25 73 Creek65 16 17 15 85 22 19 DORA 14 12 Eldon 27 7 14 15 15 20 12 46 65 NGE 19 8 55 F 13 12 4 55 16 A 10 20 80 48 U 22 RA 32 River L 3 T 10 12 5 1080 20 10 35 12 11 10 3 85 Lake 70 4 75 17 6 4 Michael 47 15 17 8 30 10 27 5 31 47 5 4 Lake 45 Lake 12 12 64 Matthew 30 35 Malcolm 50 60 58 50 12 8 48 86 R 45 55 7 11 67 15 50 iver Langdon 19 7 15 10 36 78 24 15 65 11 10 51 40 82 5 55 15 3 88 11 9 40 70 5 7 5 70 88 8 9 8 35 58 54 13 9 67 60 80 54 5 23 75 70 7 82 8 Lake 55 45 82 80 50 9 85 Mark Tam O'shanter 19 60 60 10 15 75 65 Lake 80 10 12 9 27 72 9 65 65 53 85 60 60 62 14 80 35 8 20 8 17 27 12 60 17 22 75 15 13 8 48 12 45 35 80 TYNDALL 65 30 78 70 3 28 70 58 15 THE Lake Lake 68 BASTION 14 Myra 30 75 Magdala 9 10 80 70 13 80 7 12 Lake 16 20 77 84 15 10 14 FARQUHAR 15 Monica 32 75 16 11 22 LOOKOUT 72 55 4 8 53 15 5 80 30 26 53 8 20 35 13 15 54 22 80 10 38 18 37 Lake 15 52 75 40 18 28 67 25 Martha 8 Nectar 80 MOUNT 16 12 Lakes 88 27 ELDON 18 16 72 11 75 37 16 GEIKIE 16 11 17 16 10 85 30 85 60 30 LAKE MARY 28 43 60 23 20 52 72 10 30 45 47 64 ELDON 84 80 10 7 18 26 84 60 65 PEAK 20 18 26 75 Shroud RIVER E L D O N 70 67 56 15 Lake THE CHIN 20 LAKE 18 25 73 35 65 48 25 80 64 15 18 11 45 67 52 18 18 75 15 25 52 13 75 15 SPICER 85 75 20 27 85 22 60 35 50 30 3 32 66 36 16 35 33 10 15 66 45 63 25 75 50 85 75 75 Lake 55 32 20 5670 80 69 80 84 Apollos 48 32 13 45 40 60 30 60 R A N G Clark 46 60 80 33 60 25 65 20 30 44 Lake 35 22 E Lake 14 70 55 30 Paul 71 23 50 Philip Creek 30 30 12 20 11 32 18 83 40 Dante 32 55 82 6 50 12 43 30 20 85 80 50 15 73 38 34 8 70 51 20 20 51 POETS 2 70 6 15 8 75 80 54 HILL 70 85 22 Lake 10 30 80 48 40 65 MOUNT Peter 40 8 12 Lake CYRIL Polycarp 40 37 75 30 8018 50 85 35 Rivulet 20 24 65 5 24 65 23 43 12 65 10 34 41 80 50 45 52 43 38 30 44 60 85 LAKE MARGARET 25 43 70 25 50 40 502278 50 35 60 55 60 65 20 80 50 30 80 70 57 60 10 25 40 27 12 45 42 20 5350000mN 5350000mN 380000mE 81 82 83 84 85 86 87 88 89 390000mE 91 92 93 94 95 96 97 98 99 400000mE Compiled by K.D. Corbett, B.Sc.(Hons) Ph.D. and D.B. Seymour, B.Sc.(Hons) Ph.D. 1995 from the following sources (see responsibility diagram): HOLOCENE A CORBETT, K.D. and JACKSON, J.C. 1987. Geology of the Tyndall Range area. ? Map 5. Mt Read Volcanics Project. Department of Mines, Tasmania. B CORBETT, K.D., 1986. Geology of the Henty River−Mt Read area. Map 3. CENOZOIC QUATERNARY Mt Read Volcanics Project. Department of Mines, Tasmania. C Air photo interpretation by D.B. Seymour with additional information PLEISTOCENE from Mt Read Volcanics Project Map 6. D CORBETT, K.D., CALVER, C.R., EVERARD, J.L. and SEYMOUR, D.B. 1989. Geological Atlas 1:25 000 Series. Queenstown. Department of Mines. Tasmania. PERMIAN SUPERGROUP E R.O. Reid B.Sc. Hons. thesis. University of Tasmania. LOWER PARMEENER LOWER Geology of the Princess River area. Updated by: DEVO − DEVO NIAN F K.D. Corbett, 2003 as part of the Western Tasmanian Regional Minerals Program. ELDON GROUP ELDON SILU − SILU RIAN CAMBRIAN PALEOZOIC SERIES 3 CAMBRIAN 3 SERIES MOUNT READ VOLCANICS READ MOUNT GROUP ORDO − ORDO VICIAN GORDON EASTERN QUARTZ− EASTERN GROUP TYNDALL PHYRIC SEQUENCE PHYRIC COMPLEX CENTRAL VOLCANIC CENTRAL RESPONSIBILITY DIAGRAM PALEOZOIC WURAWINA SUPERGROUP WURAWINA META−SEDIMENTS TYENNAN REGION TYENNAN MESOPROTEROZOIC FURONGIAN CAMBRIAN OWEN GROUP OWEN INTRUSIVE ROCKS JURA − JURA SSIC MESOZOIC REFERENCE THIS MAP AS: LOCATION DIAGRAM CORBETT, K.D. and SEYMOUR, D.B. (compilers) 2003. Digital ORDO − ORDO VICIAN Geological Atlas 1:25 000 Scale Series. Sheet 3835. Tyndall. Mineral Resources Tasmania. INDEX TO ADJOINING SHEETS Base data from the LIST, Copyright State of Tasmania. DUNDAS SELINA ACHILLES Map produced by the Geoscience Information Branch of Burnie Mineral Resources Tasmania using G.I.S. software. OCEANA TYNDALL DOME Launceston GDA94 − MGA Zone 55. Contour Interval: 20 metres. PALAEOZOIC PROFESSOR GORMANSTON GOULDS CAMBRIAN MT READ VOLCANICS READ MT While every care has been taken in the preparation of this data, no warranty is given Queenstown as to the correctness of the information and no liability is accepted for any statement or opinion or for any error or omission. No reader should act or fail to act on the 1:25000 maps available. basis of any material contained herein. Readers should consult professional advisers. HOBART As a result the Crown in Right of the State of Tasmania and its employees, contractors and agents expressly disclaim all and any liability (including all liability from or attributable to any negligent or wrongful act or omission) to any persons whatsoever in TYNDALL respect of anything done or omitted to be done by any such person in reliance whether in whole or in part upon any of the material in this data. 3835 Crown copyright reserved..
Recommended publications
  • The Philosophers' Tale
    1 Photo: Ollie Khedun Photo: THE VISION THE CONCEPT THE PROPOSAL The Philosophers’ Tale is The West Coast Range consists The Next Iconic Walk – The of 6 mountains on a north south Philosophers’ Tale 2019 proposal more than just an iconic walk, ridge. The ridge is trisected by the – Chapter One: Owen, takes it is made up of a series of Lyell Highway (between Mt Lyell people on a journey over 28km in iconic walks to be developed and Mt Owen) and the King River 3 days and 2 nights experiencing Gorge (between Mt Huxley and Mt mountain peaks, incredible views, over a period of time. There Jukes). This makes for three distinct button grass plains, cantilever are an abundance of coastal regions, each with their own part platforms and suspension bridges walks – the Overland Track to play in telling the bigger story. over deep river gorges down into All areas have been impacted cool temperate rainforest, majestic is now mature, and people by mining exploration or other waterfalls along the tranquil King are looking for the next development in the past 100 years. River on the incredible West Coast of Tasmania. With the option to option – The Philosophers’ The area is naturally divided into finish via train, hi-rail, raft, kayak, four zones, or in story telling Tale is just that. People will helicopter or jet boat, making it a parlance, ‘Chapters’. The Chapters be drawn locally and across truly unforgettable experience. (outlined on page 8), let’s call them the globe to experience these Owen, Jukes, Lyell and Tyndall lead View West Coast video iconic walks, returning time easily to the staged construction of any proposed track works.
    [Show full text]
  • TWWHA Wilderness Value Assessment 2015.Pdf
    Tasmanian Wilderness World Heritage Area Assessment of Wilderness Value Stage 2: Entire TWWHA Martin Hawes & Roger Ling September 2015 TWWHA Wilderness Value Assessment Stage 2: Entire TWWHA Summary Two computer-based methodologies, the National Wilderness Inventory (NWI) methodology and a revised version of this, were used to assess wilderness value across the Tasmanian Wilderness World Heritage Area (TWWHA) and contiguous wild areas based on input geodata that was (mostly) current in 2015. The results were used to assess the current status of wilderness across the region and the changes in wilderness value relative to the results of similar studies undertaken in 1995 and 2005. The 2015 results were broadly similar to those obtained in 2005, although substantial losses due to post-2005 roading were observed in several areas, particularly the Counsel River area. Gains in wilderness value due to the closure, downgrading or revegetation of roads and vehicle tracks were observed in the area west of Macquarie Harbour, the middle Hansons River area and the area north of Victoria Pass. Numerous apparent changes (mainly losses) in wilderness value were observed due the inclusion in the 2015 data set of features such as residences and areas of disturbed land that were overlooked in the 2005 analysis. Comparison using the NWI methodology of current wilderness value with the results obtained in 1995 revealed numerous gains and losses, some of which had already been observed in 2005. Substantial gains in wilderness value, mostly due to the closure, downgrading or revegetation of roads and vehicle tracks, were observed in the area southwest of Macquarie Harbour, Moores Valley, Alma Valley, the northern half of the Jane River Track and Little Fisher Valley.
    [Show full text]
  • Verification of the Heritage Value of ENGO-Proposed Reserves
    IVG REPORT 5A Verification of the heritage value of ENGO-proposed reserves Verification of the Heritage Value of ENGO-Proposed Reserves IVG Forest Conservation REPORT 5A 1 March 2012 IVG REPORT 5A Verification of the heritage value of ENGO-proposed reserves IVG Forest Conservation Report 5A Verification of the Heritage Value of ENGO-Proposed Reserves An assessment and verification of the ‘National and World Heritage Values and significance of Tasmania’s native forest estate with particular reference to the area of Tasmanian forest identified by ENGOs as being of High Conservation Value’ Written by Peter Hitchcock, for the Independent Verification Group for the Tasmanian Forests Intergovernmental Agreement 2011. Published February 2012 Photo credits for chapter headings: All photographs by Rob Blakers With the exception of Chapter 2 (crayfish): Todd Walsh All photos copyright the photographers 2 IVG REPORT 5A Verification of the heritage value of ENGO-proposed reserves About the author—Peter Hitchcock AM The author’s career of more than 40 years has focused on natural resource management and conservation, specialising in protected areas and World Heritage. Briefly, the author: trained and graduated—in forest science progressing to operational forest mapping, timber resource assessment, management planning and supervision of field operations applied conservation—progressed into natural heritage conservation including conservation planning and protected area design corporate management—held a range of positions, including as, Deputy Director
    [Show full text]
  • Papers and Proceedings of the Royal Society of Tasmania
    View metadata, citation and similar papers at core.ac.uk brought to you by CORE MAP provided by University of Tasmania Open Access... To Illustrate Paper on DISCOVERY OF CLACIATION T£ Moore FHfrli 147 DISCOVERY OF GLA.CIATION IN THE VICINITY OF MOUNT TYNDALL, IN TASMANIA. By T. B. Moore, F.R.G.S. (Map.) A most important and extremely interesting discovery of glaciation was made by Mr. E. J. Dunn, F.G.S., of Victoria, in the first week of October, 1892, on the high plateau in the vicinity of Lake Dora, Tasmania. Having been with Mr. Dunn at the time of his discovery, and as it was his intention to write on the subject, I now wish to record in the proceedings of our Royal Society the result of a more extended search made by me on the high peaks and surrounding tableland, and illustrate the most important features of the glacial action on the accompanying sketch map compiled from prismatic compass bearings. The Tyndall Range and Mount Sedgwick have been the principal seats of the prehistoric glaciers ; respectively these mountains are about thirteen (13) and nineteen (19) miles in a direct line from the town of Zeehan, and twenty-two (22) and nineteen (19) miles from the port of Strahan. They rise 1,500ft. to 1,600ft. above an elevated plateau, on which are situated Lake Dora and numerous other lakes and tarns at an altitude of 2,400ft. above the sea level. The plateau is drained on the north by the Anthony River, a tributary of the River Pieman, on the west by the Henty River and its tributaries, and on the east and south by the head branches of the King River.
    [Show full text]
  • Part-3---A-Review-Of-The-Geoconservation-Values-Of-The-Tasmanian-WWHA.Pdf
    Recommendations and Issues Arising 4.0 RECOMMENDATIONS & ISSUES ARISING 4.1 Introduction This final section briefly draws out conclusions arising from the descriptions and discussions of the World Heritage geoconservation values of the TWWHA that have been provided in Section (3.0). In most cases, issues are only briefly highlighted or dot-pointed in this section, so as to provide a simple "check list" of key issues arising. Section (3.0) (and references therein) should be referred to for background details of the various issues and recommendations listed here. 4.2 Recommended Additions to the TWWHA Based on Geoconservation Values, and Areas for Further Consideration All of the 21 new reserves adjoining the TWWHA, as listed and described in Section (3.3) above, contain features or systems contributing substantially to one of more of the recognised TWWHA World Heritage geodiversity themes (see Section 3.3), and hence they are all recommended for inclusion in an extended Tasmanian Wilderness World Heritage Area (TWWHA) boundary on this basis. It is additionally recommended that the Hastings Caves State Reserve – which immediately adjoins the Hastings Cave reserve extension that is one of the 21 new reserves recommended for inclusion in the TWWHA - be also incorporated within the TWWHA boundary owing to its possession of dolomite karst systems that are physically continuous with, as well-developed, and more accessible than those contributing to the Karst World Heritage geoconservation themes within the existing (and now contiguous) Southwest National Park / TWWHA (see Section 3.4). Significantly, this proposal would also add an important ongoing hydrothermal karst system to the TWWHA (see Section 3.4), which is a karst process that is at present poorly represented within the TWWHA, yet is an important element of Tasmania's karst geodiversity.
    [Show full text]
  • Late-Quaternary Vegetation History of Tasmania from Pollen Records
    14 Late-Quaternary vegetation history of Tasmania from pollen records Eric A. Colhoun School of Environmental and Life Sciences, University of Newcastle, Newcastle, NSW [email protected] Peter W. Shimeld University of Tasmania, Hobart, Tasmania Introduction Vegetation forms the major living characteristic of a landscape that solicits inquiry into the history of its changes during the late Quaternary and the major factors that have influenced the changes. Early studies considered ecological factors would cause vegetation to develop until a stable climatic climax formation was attained (Clements 1936). The concept of an area developing a potential natural vegetation in the absence of humans was similar (Tüxen 1956). Both ideas held that the vegetation of an area would develop to a stable condition that would change little. However, the vegetation of a region never remains in stasis, but develops dynamically through time, influenced by changing dominant factors (Chiarucci et al. 2010). The structure of a major vegetation formation is usually dominated by a limited number of taxa of similar physiognomy. Although many taxa are identified at most sites studied for pollen in Tasmania, the major percentages in the records are represented by fewer than 10 pollen taxa. These are widely dispersed taxa, local taxa usually being under-represented in the records (Macphail 1975). The structures of fossil pollen-vegetation formations are interpreted with regard to modern vegetation even though abiotic and biotic conditions rarely remain the same through time, and identical replication is not expected. During the late Quaternary in Tasmania, the most important abiotic changes affecting vegetation were temperature and precipitation, and the most important biotic change was the impact of Aboriginals using their major cultural tool, fire.
    [Show full text]
  • Geology of the Southwestern and North–Central Parts of the Lyell 1:50 000 Scale Quadrangle
    Tasmanian Geological Survey Record 2009/03 Geology of the southwestern and north–central parts of the Lyell 1:50 000 scale quadrangle by C . R. Calver DepartTasmanianment o fGeological Infrast Surveyructu Recreord, E n2009/03ergy and Resources 1 Mineral Resources Tasmania LYELL Figure 1. Location map of Lyell 1:50 000 scale quadrangle showing areas described in this report. Mineral Resources Tasmania PO Box 56 Rosny Park Tasmania 7018 Phone: (03) 6233 8377 l Fax: (03) 6233 8338 Email: [email protected] l Internet: www.mrt.tas.gov.au CONTENTS SUMMARY ………………………………………………………………………………… 6 INTRODUCTION …………………………………………………………………………… 6 Acknowledgements ……………………………………………………………………… 7 STRATIGRAPHY …………………………………………………………………………… 8 WESTERN VOLCANO-SEDIMENTARY SEQUENCE …………………………………………… 8 Quartz-feldspar porphyry (Clq) ……………………………………………………………… 8 King River–Newall Creek area ………………………………………………………… 8 Garfield River area …………………………………………………………………… 8 Tuff, agglomerate, mudstone and sandstone (Clx) ……………………………………………… 8 King River–Newall Creek area ………………………………………………………… 8 Garfield River area …………………………………………………………………… 9 CENTRAL VOLCANIC COMPLEX…………………………………………………………… 10 Introduction …………………………………………………………………………… 10 Felsic feldspar porphyry intrusive and extrusive rocks (Ckvp) ……………………………………… 10 Introduction ………………………………………………………………………… 10 King River–Proprietary Peak area ……………………………………………………… 10 Intercolonial Spur …………………………………………………………………… 10 Dominantly feldspar-phyric pyroclastic rocks (Ckvr) ……………………………………………… 11 Introduction …………………………………………………………………………
    [Show full text]
  • Bedrock Geological National Estate Values of the West Coast Range
    Tasmanian Geological Survey TASMANIA DEVELOPMENT Record 1997/08 AND RESOURCES Bedrock geological National Estate values of the West Coast Range by C. R. Calver INTRODUCTION K. D. Corbett kindly reviewed an early draft of this report and suggested additional sites (Corbett, This report lists significant bedrock geological sites 1996), most of which are included below. It is in the West Coast Range, an area originally understood that Dr Corbett will make a separate nominated for the Register of the National Estate for submission regarding National Estate geological its significant glacial geomorphology. At the request values of the West Coast Range. of the Tasmanian Evaluation Panel, the nominated values are to be extended to include bedrock geology As, in general, sites must be significant in a and other values. The Panel requested that Mineral Tasmanian or higher (national or international) Resources Tasmania provide geoscientific context to be of potential National Estate information on the bedrock sites. significance (Australian Heritage Commission, 1990a, b; Duhig and Dixon, 1996), only a minority The most important previous geoconservation (seventeen) of the sites in this inventory are inventory is that of Eastoe (1979), which listed 28 considered individually to be of National Estate geological and geomorphological sites within the significance. West Coast Range area as part of a Statewide survey of ‘geological monuments’. Bradbury (1995) listed The 47 sites of scientific interest have been three additional bedrock sites. Dixon (1995) incorporated into a large database of sites of reviewed National Estate geoconservation values on geological importance across the State, which is a Statewide basis, and recommended that a used by Mineral Resources Tasmania to ensure that complete reassessment of Eastoe’s localities be adequate management of the State’s geological undertaken as part of the nomination of the West heritage takes place.
    [Show full text]
  • 11. Tyndall Creek
    11. Tyndall Creek Key facts about this geosite: The area shows spectacular views across the Tyndall Range An outwash plain with glacial moraines and erratics of all sizes Good exposures of the Mount Read Volcanics show in the glacially- scoured bedrock. How to get there: The site is 24 kilometres north of Queenstown along the sealed Anthony Road (B28) (Figure 1) or approximately 10 kilometres south of Lake Plimsoll if travelling from Tullah. A small parking area is located just north of Tyndall Creek from which a short walking circuit can be completed (~50 minutes return). Figure 1. Location of the Tyndall Creek Geosite Geosite Description: The western slopes Tyndall Range form a steep and foreboding backdrop when driving on the Anthony Road near Tyndall Creek (Figure 2). The high cliffs and slopes have been scoured by glacial activity and are composed of resistant conglomerate and sandstone (Owen Conglomerate). Whitham Falls may be seen a few kilometres to the south and is spectacular after heavy rain. To the east of the skyline, the landscape changes dramatically and the Tyndall Range forms a high dissected plateau with a labyrinth of glacial tarns and mountain peaks. The only native deciduous tree in Tasmania, the Deciduous Beech or Nothofagus gunni, is common in this alpine environment making autumn a special time of the year to visit the Tyndall Range. Figure 2. View south along the Tyndall Range, showing the great escarpment of Owen Conglomerate formed by the Great Lyell Fault. Also shows the oblique Whitham Fault, cutting through Whitham Bluff halfway along, and the glaciated plain in Mount Read Volcanics littered with large erratics.
    [Show full text]
  • The Geology of the West Coast Range of Tasmania
    PAPERS AND PROCE'EDINGS OF THE ROYAL SOCIETY 01'''' TASMANIA, VOLUME 88 The Geology of the West Coast Range of Tasmania PART I: STRATIGRAPHY AND METASOMATISM By J. BRADLEY SenioT LedllTer "in Geology at Victoria Unive?"'sity College, FVellington, N.Z. (WITH 4 TEXT FIGURES AND 9 PLATES) ABSTRACT The 'Vest Coast Range is a monadnock mountain chain of Tremadocian and older rocks. The Tremadoc strata were fault angle conglomerates which were crushed in Devonian times between a Cambrian geanticline and the Precambrian core of Tasmania. Cambrian rocks are of spilitic lavas and macigno facies greywackes. The Tremadocian strata are of Flysch and Molasse-like facies. Devonian movement was largely on tbe line of upthrust of the Cambrian geanticline and aiong thIs same line intense metasomatic metanlOrphism dosely followed the Devonian orogeny. The juxtaposition of contemporaneous and later faulting with metamorphislP and volcanic sedimentary and metamorphic breccias, provides interest. The two most interesting problems concern metamorphic contacts which resemble unconformities, and the tectonic history of the area. The phenomena observed ean be welded into a eonsecutive story which is thought to be of world-wide application. INTRODUCTION This study is part of a wider programme of investigation into the mineral bearing region of Western Tasmania. The work, under the aegis of the University of Tasmania, has already resulted in descriptions of the stratigraphy and palaeontology of the Siluro-Devonian strata of the Zeehan district, by Gill and Banks (1950). The Ordovician strata form the subject of another study; this article is concerned with the rocks and structures of the West Coast Range; with rocks which are in general of Cambrian age, unfossiliferous, metamorphosed, and cast in complex forms.
    [Show full text]
  • 6. Regatta Point
    6. Regatta Point Key facts about this geosite: Macquarie Harbour is a northwest trending graben or half graben, due to tearing apart of the crust (Manchester, 2010). Regatta Point contains well-preserved fossil plant material from the Early Eocene. The material was deposited during the Palaeocene-Eocene Thermal Maximum, a time period when the climate was hot and tropical. After this warm period, the sediments record evidence of a descent into severely cold “icehouse climate conditions” 34 million years ago. How to get there: This geosite is centred on the town of Strahan which is located approximately 41 km west of Queenstown via the Lyell Highway (B24), or 45 kilometres south of Zeehan via the Henty Road (B27) (Figure 1). It is recommended that the visitor explore the Strahan foreshore via a well-defined path that links West Strahan Beach, the Strahan wharf and Regatta Point (~ 1 hour) (Figure 2). Other points of interest should include the scenic lookout at Water Tower Hill, a walk to Hogarth Falls (~40 minutes return) or a visit to the old cemetery above Regatta Point to view the gravesite of Thomas Bather Moore, a famous West Coast explorer and prospector. Figure 1: Location of the Regatta Point geosite. Figure 2: Walking tracks in the Strahan – Regatta Point area. Geosite Description: Macquarie Harbour represents a flooded portion of a much older basin or half graben that developed during crustal extension during Paleogene (66 to 23 million years ago). The Macquarie Harbour Graben extends from the Moores Valley area north for about 100 kilometres to just south of Trial Harbour (Figures 3) and is about 10 kilometres wide.
    [Show full text]
  • A4 Pamphlet.Cdr
    Western Tasmania has an exceptionally rich and diverse range of geological features in a small area, including folded and glaciated mountain ranges, ancient volcanoes, world The West Coast GeoTrail class ore bodies, rare minerals, and ancient fossils. Here, the handiwork of the massive Understanding the landscape and forces and landscape-forming processes of the “Living Earth” are evident in nearly every view. Rocks from all the major geological periods of Earth history are found here, and geology of Western Tasmania the region contains Australia's best examples of glaciated landscapes. Geologists first forged their way into the western wilderness in the 1850s, when the young Charles Gould walked from Lake St Clair to the West Coast Range, on a government-funded survey of the geology and potential gold deposits. Gould also began naming the peaks of the range after famous British geologists of the time, from Darwin in the south through Jukes, Huxley, Owen, Lyell, Sedgwick, Geikie and Tyndall to Murchison in the north. 1 The West Coast's European history is centred around geology and mining. The 10 discovery of tin at Mt Bischoff in 1871 led to a series of discoveries which revealed Western Tasmania to be one of the richest and most diversely mineralised provinces in 2 the world. Mines were developed at Queenstown (Mt Lyell), Zeehan, Rosebery, 9 11 Hercules, Mt Farrell, Renison, Cleveland/Heazlewood and Savage River between 1871- 1900, and discoveries since 1974 have seen new mines at Que River, Hellyer, Henty, Kara, and Avebury. Copper, lead, zinc, gold, silver, tin, tungsten, iron and nickel have 3 been mined.
    [Show full text]