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Norsk versjon | ||||
| THE NATURAL STONE DATABASE | |||||
| Deposit Area 1428 - 605 | |||||
| (Last updated 06.feb.2024) | |||||
Name of Deposit Area : Værlandet |
| (Object Id : 1428,605,00,00) |
| Location |
| County : | Sogn og Fjordane (14) | Municipality : | Askvoll (1428) |
| Map 1:50000: | Melvær (1017-1) | Map 1:250000: | Florø (tidl. Måløy) |
| Marking point: | Longitude: | 4.7020230 | Latitude: | 61.3031320 |
| EU89-UTM Zone 32 | (Coordinates IS confirmed) |
| X-coord: | 269875 m. | Y-coord: | 6804128 m. |
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| Commodity |
| Main Type: | Sandstone and conglomerate | Sub Type: | Conglomerate | |
| Brickstone(Y/N): | N |
| Production |
| Activity: | Stone quarrying | Reserves: | ||
| Prod. method: | Open pit mining | Production: | ||
| Prod. status: | Active | Volume of dump: |
| Importance |
| Public: | Not Assessed (reg. 21.03.2017) |
| Economical: | Significant , (Confirmed 08.mai.2001 by Bjørn Lund) |
| Historical: | No , (Confirmed 19.jul.2012 by Leif Furuhaug) |
Products |
| Commercial Name | Product description |
| Black Beauty | Classification :Massive blocks | Colour :Black | |
| Play of colours : | Uniformity :Medium good | ||
| Lithology : | Grain size :Very unevenly grained |
Mineralogy: |
| Amphibole | Major mineral (>10%) | ||
| Feldspar | Major mineral (>10%) | ||
| Quartz | Major mineral (>10%) | ||
| Chlorite | Major mineral (>10%) | ||
| Epidote | Subordinate mineral (1-10%) | ||
| Hematite | Subordinate mineral (1-10%) | ||
| Muscovite | Subordinate mineral (1-10%) | ||
| Carbonate | Subordinate mineral (1-10%) | ||
| Zircon | Accessory mineral (<1%) | ||
| Titanite | Accessory mineral (<1%) | ||
| Biotite | Accessory mineral (<1%) |
Test of Physical Properties: |
| Type of test | Standard | Test value | ||
| Specific gravity | DIN 52102 | 3002 g/cm3 | ||
| Porosity | DIN 52102 | ,2 % | ||
| Water absorption (weight %) | DIN 52103 | ,07 % | ||
| Bending strength | DIN 52112 | 22,7 N/mm2 | ||
| Compressive strength | DIN 52105 | 191,5 N/mm2 | ||
| Wearing coefficient | ASTM C241-85 | 2,3 mm |
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Operations |
| From - To | Activity | Comments | |
| 1995 | Regular production | Company/Institution :Landøy Steinindustri A/S |
Deposit rock |
| Lithology: | Weathering colour: | |||
| Era: | Paleozoic | Period: | Devonian | |
| Dating: | Method: | |||
| Genesis: | Sedimentary/metamorphic | Form: | Lens | |
| Main texture: | Brecciated |
| Main grain size: | Very unevenly grained | Main alteration: |
| Strike/Dip: | 270 / 60 | Direction: | ||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Paleozoic | Period: |
| Province: | ||
| Geotec.unit: | ||
| Tectonic complex: | ||
| Igneous complex: |
| Group: | Formation: | Buelandformasjonen |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Not defined | Joints/Fractures | Strike/Dip :270 / 60 |
Information(s) in free text format |
| Free text |
| Værlandet ligger ytterst i havgapet vest for Askvoll i Sogn og Fjordane. Grønnsteinsbreksjen på Værlandet ligger i overgangssonen mellom grønnstein og konglomerat. Den er hardere enn disse og danner derfor oppstikkende rygger i terrenget. Mektigheten varierer fra 0 - 70 m Breksjen består av kantete bruddstykker av en nesten svart grønnstein som av og til inneholder dyp rød jaspis. Bruddstykkene er vanligvis mindre enn 10 cm og i gjennomsnitt omkring 4-5 cm. Matriks er en middelskornet, grålig grønn sandstein. Bergarten tar polering meget godt. Produkter som leveres: Vindusbrett, benkplater til kjøkken og bad, trappestein, terassestein, murbekledning, hyller og plater til ulike bruk, flis, gravmonument etc. |
| Photo(s) from the Deposit area: |
|
Bibliography: |
| From NGU's Reference Archive: |
| Skjerlie, Finn J. , 1984 |
| Melvær og Askvoll. Beskrivelse til de berggrunnsgeologiske kart 1017 I og 1117 IV - M 1:50 000 (med fargetrykt kart) |
| ;Norges geologiske undersøkelse;KARTBESKRIVELSE; BOK;Skrifter; No.55;26 pages |
| Abstract: | |
| The main tectonostratigraphic units within the Melvær and Askvoll map-areas are: Precambrian basement rocks, allochthonous Precambrian charnokitic- mangeretic rocks of the Dalsfjord Nappe; allochthonous mainly Cambro-Silurian rocks of the Stavfjord Nappe; Devonian sedimentarty rocks. A description of the different rock types are given. Brief descriptions are also given of the tectonic structures occurring in the area and of the metamorphism of the different units. The Dalsfjord Nappe was thrust towards the south-east, probably in Early Ordovician time, and was strongly eroded before thrusting of the Stavfjord Nappe took place in the Late Silurian. The Stavfjord Nappe was thrust towards the south-east as a major asymmetric anticline - the Stavfjord Anticline - with an axial plane dipping about 40 degrees towards the north-west. A general description is given of some ore and building- stone occurrences. |
| Skjerlie, F. J. , 1985 |
| Melvær. Berggrunnskart; Melvær; 10171; 1:50 000; trykt i farger; NGU Skrifter nr.55 |
| ;Norges geologiske undersøkelse;KART |
| References not to be found in NGU's Reference Archive.: |
| Bergstøl, R., 1977: Vedr. Værlandet konglomerat - rapport til Askvoll kommune. |
| Russenes, B. F., 1976: Kartlegging av breksjeforekomst på Værlandet - Askvoll, Leikanger. |
| Skjærlie, F., 1970: Rapport etter geologisk befaring til Værlandet i Askvoll kommune. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | |||
| 24027 | Block |
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| 24028 | Block |
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| The fact sheet was created on 22.11.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |