Norsk versjon
THE NATURAL STONE DATABASE
Occurence 301 - 612 Rødtvedt 1
(Object Id: 15492)
(Last updated: 16.02.2010)

Location
County: Oslo Municipality: Oslo (301)
Map 1:50000: Oslo (1914-4) Map 1:250000: Oslo
Coordinate system: EU89-UTM Zone 32
East: 603450 m. North: 6647809 m.
Longitude: 10.8523120 Latitude: 59.9546640
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Resource
Resource Type: Granite and other igneous rocks Resource Subtype: Syenite
Brickstone(Y/N): N
Importance
Raw material meaning: Little Importance (reg. 18.02.2015)
Historical: Yes , (Confirmed 29.sep.2004 by Leif Furuhaug)

Resources and production
Activity: Stone quarrying Reserves:
Operating method: Open pit mining Historical production:


Deposit rock
Lithology: Weathering colour:
Genesis: Form:
Main texture:
Main grain size: Main alteration:
Strike/Dip: Direction:
Plunge:
Stratigraphic classification of host rock
Era: Period:
Province:
Geotec.unit:
Tectonic complex:
Igneous complex:
Group: Formation:

Information(s) in free text format
Description
Bruddet er fullstendig overgrodd av skog og kratt. Avsenkningen er 5-6 m, i øst-vest retning er det ca. 20 m, og det er 30-40 m nedover til nærmeste hus hvor hagen er en del av bruddet.
Location
Bruddet ligger sørvest for Sandås, opp mot marka nordøst for bebyggelsen på Rødtvedt.

Photo(s) from the Deposit area:
Photo no. 1 showing Bruddet"

Bibliography:
From NGU's Reference Archive:
Oxaal, John , 1916
Norsk granit
;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.76;1-220 pages
Abstract:
This work is a report of granite and the granite industry in Norway. It contains a description of the various fields of granite and similar rocks from a scientific as well as from a technical and economical standpoint. The geological occurrence of the various rocks, their chemical and mineralogical composition, are thoruoughlyoughly treated, also the questions of practical interest, as the quality and other technical properties, further the problems of location and conditions for transport, conditions for quarrying and otherquestions of interest in the utilization of the various occurrences of granite. Granite: This chapter consideres first the mineralogical and chemical composition of the granite, and the various types of granite resulting from the varying composition; thereafter the most important structural types and how these are dependent on the geological appearance of the rock. Lakkolites and other froms assumed by granite masses when injected into the crust of the earth, are mentioned; some examples of beautifully formed lakkolites are also mentioned. The question of sheet structure and rift in the granite are of great importance in its utilization, and are of interest both practically and theoretically.

Name of Locality: Rødtvedt 2
(Object Id: 15499 612,01,00)

Location
County: Oslo Municipality: Oslo (301)
Map 1:50000: Oslo (1914-4) Map 1:250000: Oslo
Coordinate system: EU89-UTM Zone 32
East: 603770 m. North: 6648060 m.
Longitude: 10.8581640 Latitude: 59.9568280
Show on map

Resource
Resource Type: Granite and other igneous rocks Resource Subtype: Syenite
Brickstone(Y/N):
Importance
Historical: Yes , (Confirmed 29.sep.2004 by Leif Furuhaug)

Resources and production
Activity: Stone quarrying Reserves:
Operating method: Open pit mining Historical production:


Information(s) in free text format
Description
Stort område med diameter ca. 140 m har vært et brudd. I dag er det villabebyggelse i bunnen av bruddet. Maks. 10 m avsenkning.
Location
Dette bruddet ligger SV for Greibanen 1 og er adskilt fra dette med en smal fjellrygg.

Photo(s) from the Deposit area:
Photo no. 1 showing Villabebyggelse i bruddet i dag"

Name of Locality: Rødtvedt 3
(Object Id: 15501 612,02,00)

Location
County: Oslo Municipality: Oslo (301)
Map 1:50000: Oslo (1914-4) Map 1:250000: Oslo
Coordinate system: EU89-UTM Zone 32
East: 603530 m. North: 6647960 m.
Longitude: 10.8538190 Latitude: 59.9559910
Show on map

Resource
Resource Type: Granite and other igneous rocks Resource Subtype: Syenite
Brickstone(Y/N):
Importance
Historical: Yes , (Confirmed 29.sep.2004 by Leif Furuhaug)

Resources and production
Activity: Stone quarrying Reserves:
Operating method: Open pit mining Historical production:


Information(s) in free text format
Description
Dette bruddet er mye mindre enn Greibanen 1 og Rødtvedt 2. Det er ca. 25 m i åpningen, og avsenkninen er ca. 4 m. Syenitten har ganske tette sprekker, og benkehøyden er 0,3-0,5 m. Mellom dette bruddet og Rødtvedt 2 er det et virvar av bergarter (xenolitter og inneslutninger av kambro-silur-bergarter).
Location
Bruddet ligger i skogen nordvest for bebyggelsen på Rødtvedt.

Photo(s) from the Deposit area:
Photo no. 1 showing Bruddet"


The fact sheet was created on 08.12.2021

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