E18 roadcuts, Rønningen (Skredderrønningen), Porsgrunn, Telemark, Norway
|Latitude & Longitude (WGS84):||59° 6' 39'' North , 9° 43' 54'' East|
|Latitude & Longitude (decimal):||59.11101,9.73186|
|Other regions containing this locality:||Scandinavia|
|Köppen climate type:||Dfb : Warm-summer humid continental climate|
|Name(s) in local language(s):||Veiskjæringer E 18, Rønningen (Skredderrønningen; Lillegårdskleivane), Porsgrunn kommune, Telemark, Norge|
Minerals found during construction of a new alignment of the highway E 18 in the end of the 1980s. Several small syenite pegmatites and miarolitic cavities hosted in larvikite were exposed east of the Telemarkstunnel and west of Lannerheia.
48 valid minerals. 1 erroneous literature entry.
Rock Types Recorded
Select Rock List TypeAlphabetical List Tree Diagram
Entries shown in red are rocks recorded for this region.
This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.
Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org
|Permian - Carboniferous|
252.17 - 358.9 Ma
|Carboniferous-Permian plutonic rocks|
Age: Paleozoic (252.17 - 358.9 Ma)
Comments: Deep-seated to high-level intrusions are included. Many charnockites, anorthosites, and large ophiolites, classified as plutons, are distinguished in the database using the SIGNIF item. Ophiolites were classified as plutons, even where remnants may be extrusive and/or sedimentary.
Lithology: Plutonic rocks
Reference: Geological Survey of Canada. Generalized geological map of the world and linked databases. doi:10.4095/195142. Open File 2915d. 
Burvald, Ingulv (1993): To forekomster av nefelin-syenitt-pegmatitt i Telemark. Stein 20 (3), 176-179.
Engvoldsen, T., Andersen, F., Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18 (1), 15-71.