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dc.contributor.authorRoberts, David
dc.contributor.authorGromet, L. Peter
dc.contributor.authorNissen, August L.
dc.coverage.spatial18241 Namsskogan
dc.coverage.spatialBINDAL
dc.coverage.spatialNAMSSKOGAN
dc.coverage.spatial18252 Majafjellet
dc.coverage.spatial18253 Bindal
dc.coverage.spatialNORDLAND
dc.coverage.spatialTRØNDELAG
dc.coverage.spatial18243 Harran
dc.coverage.spatial18244 Kongsmoen
dc.date.accessioned2020-08-26T09:06:06Z
dc.date.available2020-08-26T09:06:06Z
dc.date.issued2006
dc.identifier.urihttps://hdl.handle.net/11250/2674168
dc.description.abstractAn elongate tonalite pluton and a c.10 m-thick granodiorite body in the southeastern part of the Bindal Batholithand Helgeland Nappe Complex, Nord-Trøndelag, have yielded U-Pb zircon ages of 429 \u00B12 and 430 \u00B12 Ma, respectively. These dates are interpreted to represent the crystallisation ages of these rocks and supersede pre-viously published Cambrian Rb-Sr whole-rock isochron ages from these very same bodies. The zircon ages reported here are comparable to other published U-Pb emplacement ages for granitoid plutons in the eastern part of the Bindal Batholith. A foliation in parts of the tonalite and granodiorite, and folds affecting this foliation are considered to have formed during the Scandian orogenic event which, in this part of the Helgeland Nappe Complex, is believedto have initiated at the time of termination of calc-alkaline magmatism at around 428 Ma.
dc.language.isoeng
dc.relation.ispartofseriesNGU Bulletin (446)
dc.rightsNavngivelse 4.0 Internasjonal
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no
dc.subjectGRANODIORITT
dc.subjectTONALITT
dc.subjectDATERING
dc.subjectBERGGRUNNSGEOLOGI
dc.titleU-Pb zircon ages of a tonalite and a granodiorite dykefrom the southeastern part of the Bindal Batholith,central Norwegian Caledonides
dc.typeJournal article
dc.description.localcode56202
dc.source.pagenumber5-9


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