FN Archimer Export Format
PT J
TI Magma-driven, high-grade metamorphism in the Sveconorwegian Province, southwest Norway, during the terminal stages of Fennoscandian Shield evolution
BT 
AF SLAGSTAD, Trond
   ROBERTS, Nick M. W.
   COINT, Nolwenn
   HOY, Ingjerd
   SAUER, Simone
   KIRKLAND, Christopher L.
   MARKER, Mogens
   ROHR, Torkil S.
   HENDERSON, Iain H. C.
   STORMOEN, Martin A.
   SKAR, Oyvind
   SORENSEN, Bjorn Eske
   BYBEE, Grant
AS 1:1;2:2;3:1;4:1,3;5:1,4;6:5;7:1;8:1;9:1;10:1,6;11:1;12:6;13:7;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:;13:;
C1 Geol Survey Norway, POB 6315 Sluppen, N-7491 Trondheim, Norway.
   British Geol Survey, NERC Nat Environm Res Council Isotope Geosci Lab, Nottingham NG12 5GG, England.
   Univ Oslo, Dept Geosci, POB 1047 Blindern, N-0316 Oslo, Norway.
   IFREMER Inst Francais Rech Exploitat Mer, Unite Rech Geosci Marines, F-29280 Plouzane, France.
   Curtin Univ, Western Australian Sch Mines, Dept Appl Geol, Ctr Explorat Targeting Curtin Node, Perth, WA 6102, Australia.
   Norwegian Univ Sci & Technol, Dept Geosci & Petr, Sem Saelands Veg 1, N-7491 Trondheim, Norway.
   Univ Witwatersrand, Sch Geosci, Private Bag 3, ZA-2050 Johannesburg, South Africa.
C2 NGU, NORWAY
   BRITISH GEOL SURVEY, UK
   UNIV OSLO, NORWAY
   IFREMER Inst Francais Rech Exploitat Mer, Unite Rech Geosci Marines, F-29280 Plouzane, France.
   UNIV CURTIN, AUSTRALIA
   UNIV SCI & TECHNOL NORWEGIAN, NORWAY
   UNIV WITWATERSRAND, SOUTH AFRICA
IN DOAJ
IF 2.847
TC 41
UR https://archimer.ifremer.fr/doc/00444/55552/57143.pdf
   https://archimer.ifremer.fr/doc/00444/55552/57144.pdf
   https://archimer.ifremer.fr/doc/00444/55552/57145.pdf
   https://archimer.ifremer.fr/doc/00444/55552/57146.xls
   https://archimer.ifremer.fr/doc/00444/55552/57147.xls
   https://archimer.ifremer.fr/doc/00444/55552/57148.xls
   https://archimer.ifremer.fr/doc/00444/55552/57149.xlsx
   https://archimer.ifremer.fr/doc/00444/55552/57150.xls
   https://archimer.ifremer.fr/doc/00444/55552/57151.pdf
   https://archimer.ifremer.fr/doc/00444/55552/57152.pdf
   https://archimer.ifremer.fr/doc/00444/55552/57153.pdf
   https://archimer.ifremer.fr/doc/00444/55552/57154.pdf
   https://archimer.ifremer.fr/doc/00444/55552/57155.pdf
   https://archimer.ifremer.fr/doc/00444/55552/57156.pdf
   https://archimer.ifremer.fr/doc/00444/55552/57157.pdf
   https://archimer.ifremer.fr/doc/00444/55552/57158.pdf
   https://archimer.ifremer.fr/doc/00444/55552/57159.pdf
   https://archimer.ifremer.fr/doc/00444/55552/57160.pdf
   https://archimer.ifremer.fr/doc/00444/55552/57161.pdf
   https://archimer.ifremer.fr/doc/00444/55552/57162.pdf
LA English
DT Article
AB Recently it has been argued that the Sveconorwegian orogeny in southwest Fennoscandia comprised a series of accretionary events between 1140 and 920 Ma, behind a long-lived, active continental margin characterized by voluminous magmatism and high-grade metamorphism. Voluminous magnesian granitic magmatism is recorded between 1070 and 1010 Ma (Sirdal Magmatic Belt, SMB), with an apparent drop in activity ca. 1010-1000 Ma. Granitic magmatism resumed ca. 1000-990 Ma, but with more ferroan (A type) compositions (hornblende-biotite granites). This ferroan granitic magmatism was continuous until 920 Ma, and included emplacement of an AMCG (anorthosite-mangerite-charnockite-granite) complex (Rogaland Igneous Complex). Mafic rocks with ages corresponding to the spatially associated granites suggest that heat from underplated mafic magma was the main driving force for lower crustal melting and long-lived granitic magmatism. The change from magnesian to ferroan compositions may reflect an increasingly depleted and dehydrated lower crustal source. High-grade metamorphic rocks more than similar to 20 km away from the Rogaland Igneous Complex yield meta-morphic ages of 1070-1015 Ma, corresponding to SMB magmatism, whereas similar rocks closer to the Rogaland Igneous Complex yield ages between 1100 and 920 Ma, with an apparent age peak ca. 1000 Ma. Ti-in zircon temperatures from these rocks increase from similar to 760 to 820 degrees C ca. 970 Ma, well before the inferred emplacement age of the Rogaland Igneous Complex (930 Ma), suggesting that long-lived, high-grade metamorphism was not directly linked to the emplacement of the latter, but rather to the same mafic underplating that was driving lower crustal melting. Structural data suggest that the present-day regional distribution of high-and low-grade rocks reflects late-stage orogenic doming. 
PY 2018
PD APR
SO Geosphere
SN 1553-040X
PU Geological Soc Amer, Inc
VL 14
IS 2
UT 000433391400024
BP 861
EP 882
DI 10.1130/GES01565.1
ID 55552
ER

EF