Growth of the Archean sialic crust as revealed by zircon in the TTGs in eastern Finland

U–Pb age determinations on zircon from granitoids in the Archean of eastern Finland were conducted using the SIMS, LA-ICP-MS and TIMS techniques, with an emphasis on low-HREE granitoids. The oldest rocks in the Fennoscandian Shield are 3.4–3.5 Ga. Several samples were collected close to these roc...

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Bibliographic Details

Published in:	Bulletin of the Geological Society of Finland
Main Authors:	Pentti Hölttä, Irmeli Mänttäri, Hannu Huhma, Matti Kurhila, Tapio Ruotoistenmäki, Asko Kontinen
Format:	Article
Language:	English
Published:	Geological Society of Finland 2021-12-01
Subjects:	archean zircon u–pb age determination fennoscandian shield finland
Online Access:	https://www.geologinenseura.fi/sites/geologinenseura.fi/files/bulletin_vol93_2_77-104_holtta-etal.pdf