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Record #158491:
- #158491
Main publication details
MARC recordThe Eskolabreen granitoids revisited - an ion microprobe study of complex zircons from late Palaeoptoterozoic granitoids within the Ny Friesland Caledonides, Svalbard / Åke Johansson.
| Title: | The Eskolabreen granitoids revisited - an ion microprobe study of complex zircons from late Palaeoptoterozoic granitoids within the Ny Friesland Caledonides, Svalbard / Åke Johansson. |
| Author(s): | Johansson, Åke. |
| Date: | 2001. |
| In: | GFF. (2001.), Vol. 123(1) (2001) |
| Abstract: | Zircons from one orthogneiss, previously dated by U-Pb to c. 1766 Ma, and one of migmatite neosome, c. 1734 Ma, were examined by NORDSIM ion microprobe on ²⁰⁷Pb/²⁰⁶Pb to find nature of Caledonian overprinting, leading to lower intercept ages close to 400 Ma, and age of migmatisation in neosome. Observations favour late Palaeoproterozoic migmatisation. |
| Notes: | GFF. Vol. 123(1) :1-5 (2001). |
| Keywords: | 550.4 -- Geochemistry. 551.72 -- Proterozoic. B -- Geology and soil sciences. (*3) -- Arctic regions. (*32) -- Svalbard. |
| SPRI record no.: | 158491 |
LDR 01181naa#a2200000#a#4500 001 SPRI-158491 005 20240419050144.0 007 ta 008 240419s2001####xx#a##|##|###|0||#0|eng#d 035 ## ‡aSPRI-158491 040 ## ‡aUkCU-P‡beng‡eaacr 100 1# ‡aJohansson, Åke. 245 14 ‡aThe Eskolabreen granitoids revisited - an ion microprobe study of complex zircons from late Palaeoptoterozoic granitoids within the Ny Friesland Caledonides, Svalbard /‡cÅke Johansson. 260 ## ‡a[S.l.] :‡b[s.n.],‡c2001. 300 ## ‡ap. 1-5 :‡bill., diag., tables. 500 ## ‡aGFF. Vol. 123(1) :1-5 (2001). 520 3# ‡aZircons from one orthogneiss, previously dated by U-Pb to c. 1766 Ma, and one of migmatite neosome, c. 1734 Ma, were examined by NORDSIM ion microprobe on ²⁰⁷Pb/²⁰⁶Pb to find nature of Caledonian overprinting, leading to lower intercept ages close to 400 Ma, and age of migmatisation in neosome. Observations favour late Palaeoproterozoic migmatisation. 650 07 ‡a550.4 -- Geochemistry.‡2udc 650 07 ‡a551.72 -- Proterozoic.‡2udc 650 07 ‡aB -- Geology and soil sciences.‡2local 651 #7 ‡a(*3) -- Arctic regions.‡2udc 651 #7 ‡a(*32) -- Svalbard.‡2udc 773 0# ‡7nnas ‡tGFF. ‡gVol. 123(1) (2001) ‡wSPRI-128316 917 ## ‡aUnenhanced record from Muscat, imported 2019 948 3# ‡a20240419