Fact Sheet for <b>Occurence 301

					Norsk versjon
	THE NATURAL STONE DATABASE
	Occurence 301 - 607 Brekke 1
	(Object Id: 15453) (Last updated: 08.06.2012)

Location

County:

Oslo

Municipality:

Oslo (301)

Map 1:50000:

Oslo (1914-4)

Map 1:250000:

Oslo

Coordinate system:

EU89-UTM Zone 32

East:

598499 m.

North:

6649129 m.

Longitude:

10.7643600

Latitude:

59.9677250

Show on map

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 24.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:

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Igneous complex:

Group: Formation:

Information(s) in free text format

Description

Bruddet er lite, men endel stor blokk ligger igjen. Bildet viser hele bruddet. Bergarten er grefsensyenitt.

Location

Bruddet ligger ved Brekke, 6-700 m vest for sydenden på Maridalsvatnet.

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: Brekke 2

(Object Id: 15455 607,01,00)

Location

County: Oslo Municipality: Oslo (301)

Map 1:50000: Oslo (1914-4) Map 1:250000: Oslo

Coordinate system: EU89-UTM Zone 32

East: 598519 m. North: 6649170 m.

Longitude: 10.7647370 Latitude: 59.9680800

Show on map

Resource

Resource Type: Granite and other igneous rocks Resource Subtype: Syenite

Brickstone(Y/N):

Importance

Historical: Yes , (Confirmed 24.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

Størrelsen er ca. 10 m x 10 m og avsenkningen er ca. 1 m. Bruddet er meget overgrodd av vegetasjon. Midt mellom Brekke 1 og 2 er det også en liten sprengningsgrop.

Location

Lite brudd nordøst for Brekke 1.

Photo(s) from the Deposit area:

Photo no. 1 showing Bruddet"

	Lithology:		Weathering colour:
	Genesis:		Form:
	Main texture:

	Province:
	Geotec.unit:
	Tectonic complex:
	Igneous complex: