Fra det indre af Finmarken

• Main Author: Reusch, Hans
• Format: Article in Journal/Newspaper
• Language: Norwegian
• Published: 1902
• Subjects: KVARTÆRGEOLOGI; MALMGEOLOGI; STØRKNINGSBERGART; GULL; PETROGRAFI; Alta; Karasjok; Kautokeino; Lappuluobbal; Masi; Norway; Porsanger
• Online Access: https://hdl.handle.net/11250/2675101

Forkortet: The solid rock. In the region between Bjørnstad (NW corner of the map) and the first geological boundary line (dotted on the map) there are mostly sheared, quartzitic, feldsparbearing sandstone, lying more or less horizontally. Near to Boiabeska is a declivity represented on figs.2 and 3, page 10. On fig.3, the numerals indicate 1. gray, compact, somewhat schistose h\u00E4lleflinta with some phyllite; 2. reddish-gray sparagmite of a gneissic appearance; 3. red phyllite; 4. quartzitic sandstone; gray or greenish gray; 5. greenish gray phyllite with a slight fissility. The rock of Ravna and the neighbourhood (between the dotted lines on the map) is gneiss-granite, very much the same as the Archaean granites with parallel structuer in Southern Norway. At Kara- sjok and to the South and West of it the predominant rocks are altered sandstones, partly pure quartz sandstone, now appearing as quartzite; partly feldspar-bearing sandstone, now looking like gneissic rocks. Basic rocks, altered gabbro, amphibolite and amphibole schists occur there also. The rock at the gold washings at Sargijokk is probably a sheared gneiss, it is a light, fine-grained greenish-gray schist, rich in muscovite and chlorite. The rock is very much contorted as it seen in fig.1 on page 19 which represents a rock-face l m long. 36054