Localized occurrences of granulite: P-T modeling, U-Pb geochronology and distribution of early-Sveconorwegian high-grade metamorphism in Bamble, South Norway
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- 作者：Ane K. Engvik ; ane.engvik@ngu.no" class="auth_mail" title="E-mail the corresponding author ; Bernard Bingen ; Arne Solli
- 关键词：Granulite ; P&ndash ; T modeling ; U&ndash ; Pb geochronology ; Sveconorwegian ; Bamble
- 刊名：Lithos
- 出版年：2016
- 出版时间：January 2016
- 年：2016
- 卷：240-243
- 期：Complete
- 页码：84-103
- 全文大小：3567 K
文摘
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Localized distribution of granulite facies rocks in the Bamble lithotectonic domain
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U–Pb zircon ages yield magmatic crystallization around 1545 ± 7 and 1542 ± 5 Ma.
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U–Pb zircon age of 1139 ± 11 Ma represents robust estimate for the granulite-facies metamorphism.
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P–T modeling yields P > 1.15 GPa and T > 850 °C of Grt + Opx ± Cpx + Pl + Bt + Qz-assemblage.
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Metamorphism controlled by fluid availability, deformation, composition, P and T gradients