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The geochemistry of the Sorvik granite - a TIB-1 granite

Lindh, Anders LU (2008) In GFF 130. p.139-152
Abstract
The Sorvik granite occurs as rounded massifs in the Revsund granite in central Sweden. The rock is medium-grained with rounded quartz crystals ('drop quartz') and occasional, sometimes albiterimmed megacrysts of K-feldspar. It is a faintly peraluminous 1-type granite with some A-type affinities showing a limited chemical variation. The SiO2 content normally varies between 68 and 77 weight%. The rock is fairly high in Rb and rather low in Ta, Nb, Sr and Ti. REE patterns are weakly differentiated with moderate negative Eu-anomalies. Chemically, the Sorvik granite is more similar to rapakivi granite than to the neighbouring Revsund granite. epsilon(Nd) at the time of intrusion varies between -1.5 and -0.9. Zr-thermometry gives a minimum... (More)
The Sorvik granite occurs as rounded massifs in the Revsund granite in central Sweden. The rock is medium-grained with rounded quartz crystals ('drop quartz') and occasional, sometimes albiterimmed megacrysts of K-feldspar. It is a faintly peraluminous 1-type granite with some A-type affinities showing a limited chemical variation. The SiO2 content normally varies between 68 and 77 weight%. The rock is fairly high in Rb and rather low in Ta, Nb, Sr and Ti. REE patterns are weakly differentiated with moderate negative Eu-anomalies. Chemically, the Sorvik granite is more similar to rapakivi granite than to the neighbouring Revsund granite. epsilon(Nd) at the time of intrusion varies between -1.5 and -0.9. Zr-thermometry gives a minimum temperature around 800 degrees C for the magma generation. The source rock is modelled as a granodioritic rock. Anhydrous melting due to biotite breakdown supplies insufficient amounts of water to meet a reasonable rheologically critical melt percentage. If the temperature estimate is correct, either low degrees of granitic melt might segregate from its place of origin, or some water was added during melting. A local, probably late-magmatic F-metasomatism has caused a Nb-Ta-U-Th anomaly resulting in specific Nb minerals. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Nd-isotopes, trace elements, major elements, Sorvik granite, West Central Sweden, source rock, F-metasomatism
in
GFF
volume
130
pages
139 - 152
publisher
Geological Society of Sweden
external identifiers
  • wos:000260965300003
  • scopus:56349084225
ISSN
2000-0863
language
English
LU publication?
yes
id
7e4a0246-6188-424d-b4ad-c232770ea071 (old id 1308724)
alternative location
http://www.gff-online.se/site/article.asp?articleID=964
date added to LUP
2009-03-18 15:29:19
date last changed
2017-01-01 04:50:11
@article{7e4a0246-6188-424d-b4ad-c232770ea071,
  abstract     = {The Sorvik granite occurs as rounded massifs in the Revsund granite in central Sweden. The rock is medium-grained with rounded quartz crystals ('drop quartz') and occasional, sometimes albiterimmed megacrysts of K-feldspar. It is a faintly peraluminous 1-type granite with some A-type affinities showing a limited chemical variation. The SiO2 content normally varies between 68 and 77 weight%. The rock is fairly high in Rb and rather low in Ta, Nb, Sr and Ti. REE patterns are weakly differentiated with moderate negative Eu-anomalies. Chemically, the Sorvik granite is more similar to rapakivi granite than to the neighbouring Revsund granite. epsilon(Nd) at the time of intrusion varies between -1.5 and -0.9. Zr-thermometry gives a minimum temperature around 800 degrees C for the magma generation. The source rock is modelled as a granodioritic rock. Anhydrous melting due to biotite breakdown supplies insufficient amounts of water to meet a reasonable rheologically critical melt percentage. If the temperature estimate is correct, either low degrees of granitic melt might segregate from its place of origin, or some water was added during melting. A local, probably late-magmatic F-metasomatism has caused a Nb-Ta-U-Th anomaly resulting in specific Nb minerals.},
  author       = {Lindh, Anders},
  issn         = {2000-0863},
  keyword      = {Nd-isotopes,trace elements,major elements,Sorvik granite,West Central Sweden,source rock,F-metasomatism},
  language     = {eng},
  pages        = {139--152},
  publisher    = {Geological Society of Sweden},
  series       = {GFF},
  title        = {The geochemistry of the Sorvik granite - a TIB-1 granite},
  volume       = {130},
  year         = {2008},
}