|
|
English version | ||||
| MALMDATABASEN | |||||
| Forekomstområde 1111 - 021 | |||||
| (Sist oppdatert 09.feb.2005) | |||||
Navn på deposit area : Ørsland |
| (Objekt Id : 1111,021,00,00) |
| Lokalisering |
| Fylke : | Rogaland (11) | Kommune : | Sokndal (1111) |
| Kart 1:50000: | Sokndal (1311-4) | Kart 1:250000: | Mandal |
| Markeringspunkt: | Lengdegrad: | 6.3173500 | Breddegrad: | 58.3822830 |
| EU89-UTM Zone 32 | (Coordinates IS confirmed) |
| X-koord: | 343149 m. | Y-koord: | 6474399 m. |
|
|
| Materialtype |
| Hovedtype: | Jernmetaller (Fe, Mn, Ti) | Subtype: | Jern-titan | |
| Element(s): | Fe Ti P |
| Betydning |
| Offentlig: | Little Importance (reg. 18.02.2015) |
| Economical: | Lite viktig , (Confirmed 06.feb.2003 by Leif Furuhaug) |
Mineralization |
| Era: | Proterozoic | Period: | Neoproterozoic | |
| Dating: | Method: | |||
| Genesis: | Ortomagmatisk | Form: | ||
| Main texture: | Min. distribution: |
| Main grain size: | Main alteration: |
| Strike/Dip: | Direction: | |||
| Plunge: |
| Ti-deposit type(s) |
| Main type: | Magmatic | Ilm/Mt-ratio: | ||
| Sub type: | Mt +/- Ilm +/- Ap in mafic intrusion | %TiO(Ore): | 3 - 6 | |
| Titanium province: | Rogaland anorthosite province | %P2O5(Ore): | 1 - 3 | |
| Host rock: | Norite | %MgO(Ilm): | 1 - 3 | |
| Main Ti mineral: | Ilmenite | %V2O3(Mt): | ||
| ppm U (Rutile): |
| Stratigraphic classification of host rock |
| Era: | Proterozoic | Period: | Neoproterozoic |
| Province: | South Norwegian Basement Province | |
| Geotec.unit: | ||
| Tectonic complex: | ||
| Igneous complex: |
| Group: | Formation: |
Bibliography: |
| From NGU's Reference Archive: |
| Larsen, Rune B. , 1996 |
| Distribution of Fe-Ti oxide minerals in the Ørsland, Bakka-Krune and Einebakka area of the Bjerkreim-Sokndal layered norite, Rogaland |
| ;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.96.130;9 pages |
| Abstract: | |
| Geological mapping in scale 1:5000 in the Sokndal Lobe of the Bjerkreim-Sokndal layered norite intrusion has confirmed that cyclic unit no.IV of the magmatic stratigraphy comprise a high density of Fe-Ti oxide rich layers. The area naturally divides in the Ørsland, Bakka-Krune and Einebakka areas which indi- vidually are shaped as mega-lenses connested to each other via more narrow zones. However, seen together they comprise an open synfom dipping 40o to the west. Zones with a high desity of Fe-Ti oxide rich layers has a patchy distri- bution exhibiting thicknesses from 1 to 120 meters and a limited extent along strike. The Bakka-Krune area has the largest size but the most patchy appearance of Fe-Ti oxides which makes it very difficult to evaluate the total resources. The Einebakka area comprise the largest continuous zone of Fe-Ti oxide rich layers with a documented strike length of 450 meters and thicknesses between 20 and 120 meters. |
| Faktaarket ble generert 10.06.2026 |
| Spørsmål eller kommentarer vedrørende faktaarket kan mailes til: ressursdatabaser@ngu.no |
| Copyright © 2026 Norges geologiske undersøkelse |