SwePub
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "WFRF:(Hamilton R) srt2:(1985-1989)"

Sökning: WFRF:(Hamilton R) > (1985-1989)

  • Resultat 1-3 av 3
Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
1.
  •  
2.
  •  
3.
  • Öhlander, Björn, et al. (författare)
  • Crustal reactivation in northern Sweden : the Vettasjärvi granite
  • 1987
  • Ingår i: Precambrian Research. - : Elsevier BV. - 0301-9268 .- 1872-7433. ; 35:C, s. 277-293
  • Tidskriftsartikel (refereegranskat)abstract
    • The 1.8 Ga old Vettasjärvi granite belongs to a widespread granite type in northern Sweden and northern Finland. It is a leucocratic, generally massive, pink granite covering a large area but possesses a small vertical extent. Foliated varieties occur and gneissic ghost structures are common. Gradual transitions from biotite-rich gneiss to granite have also been observed. Mineralogy and major and trace element geochemistry demonstrate the minimum-melt character of the Vettasjärvi granite. The low contents of elements such as Nb, Y, Sn and F indicate that it is also undifferentiated. Initial εNd values between −6.2 and −8.2 suggest that the Vettasjärvi granite was generated by crustal anatexis with a major Archaean component as source material. REE contents support this conclusion. Molar proportion ratios Al2O3/Na2O+K2O+CaO lower than 1.1, combined with δ18O values between 8 and 5 suggest that little or no pelitic sedimentary material was involved in the genesis. The Vettasjärvi granite is not a single intrusion, but more likely a zone of remobilisation where granite was generated and gently and irregularly emplaced.
  •  
Skapa referenser, mejla, bekava och länka
  • Resultat 1-3 av 3

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy