Faktarka for Forekomstområde 1804

					English version
	INDUSTRIMINERALDATABASEN
	Forekomstområde 1804 - 333
	(Sist oppdatert 10.nov.2017)

Navn på deposit area : Ljøsenhammeren dol.prospekt

(Objekt Id : 1804,333,00,00)

Lokalisering

Fylke :

Nordland (18)

Kommune :

Bodø (1804)

Kart 1:50000:

Misvær (2029-2)

Kart 1:250000:

Sulitjelma

Markeringspunkt:

Lengdegrad:

15.1348060

Breddegrad:

67.0329040

EU89-UTM Zone 33

(Coordinates IS confirmed)

X-koord:

505869 m.

Y-koord:

7435054 m.

Materialtype

Hovedtype:

Karbonatmineraler

Subtype:

Dolomitt

Betydning

Offentlig: (No data)

Economical: Ikke vurdert

Products

Element/product Crude ore grade or quality

DOLOMI %

Mineralization

Era: Period:

Dating: Method:

Genesis: Form:

Main texture: Min. distribution:

Main grain size:

Strike/Dip: Direction:

Plunge:

Stratigraphic classification of host rock

Era: Period:

Province:

Geotec.unit:

Tectonic complex:

Igneous complex:

Group: Formation:

Opplysning(er) i fritekstformat

Fri tekst

Se Ljøsenhammeren dolomittforekomst (NO0362) / Kvitberget for mer informasjon.

Bibliography:

From NGU's Reference Archive:

Melezhik, Victor A.; Roberts, David; Gjelle, Svein; Solli, Arne; Fallick, Anthony E.; Kuznetsov, Anton B.; Gorokhov, Igor M: , 2013

Isotope chemostratigraphy of high-grade marbles in the Rognan area, North-Central Norwegian Caledonides: a new geological map, and tectonostratigraphic and palaeogeographic implications.

;Norwegian Geological Society (NGF);ARTIKKEL;Norwegian journal of geology; No.93 (2);107-139 pages

Abstract:

Carbon and strontium isotope chemostratigraphy (255 d13Ccarb and d18O, and 130 87Sr/86Sr analyses of carbonate components in whole-rock samples) in combination with detailed mapping at 1:20,000 scale in part of the Fauske Nappe in the Rognan area, Nordland, have led to a major revision of what had previously been considered to represent a continuous lithostratigraphy spanning over 100 million years of geological time: from Cambrian to Silurian. This new work has indicated that the high-grade, barren, marble and siliciclastic succession occurs in a series of thrust sheets which have diverse apparent depositional ages ranging from Early Cryogenian to Early Silurian. The new data support earlier interpretations that the rocks of the Fauske Nappe were deposited along the carbonate platform and adjacent continental slope of the eastern margin of Laurentia during the Neoproterozoic to Early Palaeozoic time interval. Most of the thrust sheets were generated in Early Ordovician time during the earliest stages of the main phase of the Taconian orogeny, and then immediately overlain unconformably by a carbonate breccia and conglomerate unit, the Øynes formation, also of Early Ordovician age. Just one formation (Rognan formation) in the Fauske Nappe is younger, of Early Silurian age, with Sr- and C-isotopic data that are comparable to those in fossiliferous, Early Silurian, metalimestones farther north in Troms. These particular carbonate rocks are considered to have accumulated in a post-Taconian successor basin, prior to their transport during the Scandian orogeny into the Uppermost Allochthon of the Scandinavian Caledonides.

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