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Norsk versjon | ||||
| THE INDUSTRIAL MINERAL DATABASE | |||||
| Deposit Area 1813 - 307 | |||||
| (Last updated 20.feb.2006) | |||||
Name of Deposit Area : Sausvatnet |
| (Object Id : 1813,307,00,00) |
| Location |
| County : | Nordland (18) | Municipality : | Brønnøy (1813) |
| Map 1:50000: | Velfjord (1825-4) | Map 1:250000: |
| Marking point: | Longitude: | 12.6435470 | Latitude: | 65.3130850 |
| EU89-UTM Zone 33 | (Coordinates IS confirmed) |
| X-coord: | 390199 m. | Y-coord: | 7245399 m. |
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| Commodity |
| Main Type: | Talc | Sub Type: | Serpentine |
| Production |
| Activity: | Exploration | Reserves: | ||
| Prod. method: | Production: | |||
| Prod. status: | Volume of dump: |
| Importance |
| Public: | Little Importance (reg. 18.02.2015) |
| Economical: | Minor interest , (Confirmed 20.feb.2006 by Havard Gautneb) |
Mineralization |
| Era: | Period: | |||
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| Genesis: | Form: | |||
| Main texture: | Min. distribution: |
| Main grain size: |
| Strike/Dip: | Direction: | |||
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| Stratigraphic classification of host rock |
| Era: | Period: |
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| Igneous complex: |
| Group: | Formation: |
Information(s) in free text format |
| Description |
| Ligger inne i et skyvedekke med bergarter fra tidlig til middel Ordovicium i alder. Det kan være en del av samme sonen som opptrer på Nevernes ved Heggefjorden. Bergarten er i hovedsak en serpentinitt. |
| Location |
| Ligger tett inntil Rv 803 mellom E6 og Brønnøysund. Avstand til Hommelstø er drøye 10 km. |
Bibliography: |
| From NGU's Reference Archive: |
| Thorsnes, Terje; Løseth, Helge , 1991 |
| Tectonostratigraphy in the Velfjord-Tosen region, southwestern part of the Helgeland Nappe Complex, Central Norwegian Caledonides. |
| ;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU Bulletin; No.421;1-18 pages |
| Abstract: | |
| In the southwestern parts of the Helgeland Nappe Complex, dismembered ophiolites and their cover sequences are imbricated together with nappes consisting dominantly of continentally derived rock units. A local nappe sequence comprises three nappes, informally termed the Lower, Middle and Upper nappes. The Lower and Upper nappes consist of partly migmatic mica gneisses and othogneisses associated with marbles and calc-silicate gneisses. Between these nappes, the Middle nappe includes an igneous complex of mafic and ultramafic rocks of ophiolitic affinity, unconformably overlain by a cover sequence with material derived partly from the ophiolite substrate. Plutonic rocks, ranging from hornblende gabbros to diorites and granites, were emplaced at several stages during the tectonometamorphic evolution of the region. Based on comparison with nearby areas, most of the regional metamorphism and deformation would seem to have occured in the Ordovician, with a later phase of thrusting during the Mid Silurian to Early Devonian Scandian orogeny. |
| The fact sheet was created on 17.05.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |