U-Pb zircon dating of granodiorite from the Muddus structure, northern Sweden.

• A Svecofennian granodiorite forming the core of the Muddus structure, has been dated to 1889±5 Ma. This is interpreted as the igneous crystallisation age of the rock. The geophysical signature and geological composition of this structure is also discussed.

Ämnesord

NATURVETENSKAP  -- Geovetenskap och miljövetenskap -- Geologi (hsv//swe)

NATURAL SCIENCES  -- Earth and Related Environmental Sciences -- Geology (hsv//eng)

Nyckelord

U-Pb zircon geochronology

plutonic rock

granodiorite

Muddus

Svecofennian

Svecokarelian orogen

Fennoscandian shield

geophysical data

The changing Earth

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