Faktarka for Forekomstområde 111

					English version
	NATURSTEINSDATABASEN
	Forekomstområde 111 - 632
	(Sist oppdatert 16.feb.2010)

Navn på deposit area : Store Etholmen

(Objekt Id : 0111,632,00,00)

Forekomstområdet tilhører provinsen : Iddefjord granite

Lokalisering

Fylke :

Østfold (01)

Kommune :

Hvaler (0111)

Kart 1:50000:

Fredrikstad (1913-3)

Kart 1:250000:

Oslo

Markeringspunkt:

Lengdegrad:

11.0842150

Breddegrad:

59.0825080

EU89-UTM Zone 32

(Coordinates IS confirmed)

X-koord:

619443 m.

Y-koord:

6551103 m.

Materialtype

	Hovedtype:	Granitt og andre størkningsbergarter	Subtype:	Granitt
			Brickstone(Y/N):	N

Production

Activity:	Steinbrudd	Reserves:
Prod. method:	Dagbrudd	Production:
Prod. status:	Nedlagt	Volume of dump:

Betydning

Offentlig: Little Importance (reg. 18.02.2015)

Economical: Lite viktig , (Confirmed 29.jun.2005 by Leif Furuhaug)

Historical: Yes , (Confirmed 29.jun.2005 by Leif Furuhaug)

Deposit rock

Lithology: Weathering colour:

Era: Period:

Dating: Method:

Genesis: Form:

Main texture:

Main grain size: Main alteration:

Strike/Dip: Direction:

Plunge:

Stratigraphic classification of host rock

Era: Period:

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Igneous complex:

Group: Formation:

Opplysning(er) i fritekstformat

Beskrivelse

Lite brudd som dekker et areal på ca. 10x20 m. Små steinfliser som ligger igjen på tippen tyder på gatesteinsproduksjon.

Beliggenhet

Bruddet ligger på Etholmen som er nordøstre del av Kirkøy, den siste av Hvalerøyene som er landfast.Helt nord og øst på Etholmen, nede ved sundet mot Vrangholmen ligger bruddet i sjøkanten.

Bilde(r) fra forekomstområdet:

Photo no. 1 showing Bruddet"

Photo no. 2 showing Skrot fra bruddet, stor og små blokk"

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.

	Lithology:		Weathering colour:
	Era:		Period:
	Dating:		Method:
	Genesis:		Form:
	Main texture:

	Province:
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	Tectonic complex:
	Igneous complex: