Relations between 1.19–1.13 Ga continental magmatism, sedimentation and metamorphism, Sveconorwegian province, S Norway

Bingen, Bernard; Nordgulen, Øystein; Sigmond, Ellen M. O.; Tucker, Robert D.; Mansfeld, Joakim; Högdahl, Karin

doi:10.1016/s0301-9268(03)00087-1

Cited by 63 publications

(38 citation statements)

References 71 publications

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“…The difference in apparent tectonic regimes between the eastern and western domains of the Sveconorwegian orogen may reflect relatively late amalgamation of crustal blocks (Coint et al, 2015). A separate evolution between Telemarkia and the rest of the orogen, and their eventual collision, has been considered before (e.g., Bingen et al, 2005). Although controversial (e.g., Andersen et al, 2004), the concept may yet provide the best explanation for the conflicting tectonic features observed across the Sveconorwegian orogen.…”

Section: Discussionmentioning

confidence: 99%

The U–Pb age of the Finse batholith, a composite bimodal Sveconorwegian intrusion

Jensen¹,

Corfú²

2016

NJG

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The Sveconorwegian autochthonous basement in the Finse area, South Norway, comprises a c. 900 km 2 bimodal batholith, dominated by K-feldspar megacrystic granite. The granite is locally intermingling with gabbroic rocks, and cut by different generations of pegmatite and aplite dykes. Zircon U-Pb geochronological data obtained by ID-TIMS demonstrate that granite, granodiorite and gabbro are coeval, as they define a common upper intercept age of 985.6 ± 1.6 Ma, dating emplacement of the batholith. Titanite is variously disturbed by later Sveconorwegian events. Pegmatites cross-cutting all structures yield zircon and titanite ages of 976 ± 8 Ma, 939 ± 2, and possibly 958 ± 2 Ma, reflecting the latest stages of the evolution of the batholith. The Finse batholith is one of the earliest members of the widespread ferroan hornblende-biotite-granitoid (HBG) suite, in the western part of the Sveconorwegian orogen.

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Section: Discussionmentioning

confidence: 99%

The U–Pb age of the Finse batholith, a composite bimodal Sveconorwegian intrusion

Jensen¹,

Corfú²

2016

NJG

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“…This implies that the previous units were partially exhumed prior to deposition of the Eidsborg Formation (Lamminen et al, 2011), which is a likely correlative with the Heddal Group to the Kalhovd Formation to the northeast and northwest, respectively (Bingen et al, 2003;Lamminen et al, 2011).…”

Section: Geologic Settingmentioning

confidence: 99%

“…The Bandak succession in the central Telemark region is selected for this study because it corresponds to both a key time interval, i.e. the 1.48-1.15 Ga 'inter-orogenic' period immediately preceding the Sveconorwegian Orogeny (Åhäll and Connelly, 1998;Bingen et al, 2003;Bingen et al, 2008;, and preserves high quality depositional relations between units thereby providing the opportunity for an integrated sedimentological, magmatic, and tectonic model. We report new U-Pb, Hf, and O data from detrital zircons throughout the Bandak succession, and whole-rock geochemistry of interlayered bimodal volcanic rocks.…”

Section: Page 4 Of 52mentioning

confidence: 99%

“…Dons, 1960;1972;Sigmond, 1978) that can be separated into several temporally distinct volcanic and sedimentary basins ranging from ~1.5 to 1.1 Ga in age (e.g. Bingen et al, 2002Bingen et al, , 2003Brewer et al, 2004;Laajoki et al, 2002;Bingen et al, 2008;Pedersen et al, 2009;Roberts et al, 2011). A number of terminologies and groupings have been proposed for this suite of supracrustal rocks, and here we follow the terminology of Laajoki et al (2002).…”

Section: Geologic Settingmentioning

confidence: 99%

“…The magmatism related to this time period is seen on every continent and it is dominated by bimodal mafic and felsic volcanic rocks and anorthosite-mangerite-charnockite-granite suites (Emslie and Hunt, 1990;Higgins and van Breemen, 1992;Fitzsimons, 2000;Keppie et al, 2001;Bingen et al, 2003;Fioretti et al, 2005). Although much of the magmatism preserved in this orogenic episode formed during the last stages of orogenesis (~1.05-0.92 Ga), the magmatic record of the earliest stages constrains geodynamic processes during the initial stages of continental assembly.…”

Section: Introductionmentioning

confidence: 99%

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Intermontane basins and bimodal volcanism at the onset of the Sveconorwegian Orogeny, southern Norway

Spencer

Cawood

Hawkesworth

et al. 2014

Precambrian Research

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Sedimentary recycling in arc magmas: geochemical and U–Pb–Hf–O constraints on the Mesoproterozoic Suldal Arc, SW Norway

Roberts

Slagstad

Parrish

et al. 2012

Contrib Mineral Petrol

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The Hardangervidda-Rogaland Block within southwest Norway is host to ~1.52-1.48 Ga continental building, and variable reworking during the ~1.1-0.9 Ga Sveconorwegian orogeny. Due to the lack of geochronological and geochemical data, the timing and tectonic setting of early Mesoproterozoic magmatism has long been ambiguous. This paper presents zircon U-Pb-Hf-O isotope data combined with whole-rock geochemistry to address the age and petrogenesis of basement units within the Suldal region, located in the centre of the Hardangervidda-Rogaland Block. The basement comprises variably deformed grey gneisses and granitoids that petrologically and geochemically resemble mature volcanic arc lithologies.U-Pb ages confirm that magmatism occurred from ~1521 to 1485 Ma, and conspicuously lack any xenocrystic inheritance of distinctly older crust. Hafnium isotope data range from εHf (initial) +1 to +11, suggesting a rather juvenile magmatic source, but with possible involvement of late Palaeoproterozoic crust. Oxygen isotope data range from mantle-like (δ 18 O ~5‰) to elevated (~10‰) suggesting involvement of low-temperature altered material (e.g. supracrustal rocks) in the magma source. The Hf-O isotope array is compatible with mixing between mantle-derived material with young low-temperature altered material (oceanic crust/sediments) and older low-temperature altered material (continent-derived sediments). This, combined with a lack of xenoliths and xenocrysts, exposed older crust, AFC trends and S-type geochemistry, all point to mixing within a deep-crustal magma-generation zone. A proposed model comprises accretion of altered oceanic crust and the overlying sediments to a pre-existing continental margin, underthrusting to the magma generation zone, and remobilisation during arc magmatism. The geodynamic setting for this arc magmatism is comparable to that seen in the Phanerozoic (e.g. the Sierra Nevada and Coast ranges batholiths), with compositions in the Suldal Sector reaching those of average upper continental crust. As within these younger examples, factors that drive magmatism towards the composition of the average continental crust include the addition of sedimentary material to magma source regions, and delamination of cumulate material. Underthrusting of sedimentary materials and their subsequent involvement in arc magmatism is perhaps a more widespread mechanism involved in continental growth than is currently recognized. Finally, the Suldal Arc magmatism represents a significant juvenile crustal addition to SW Fennoscandia.

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Relations between 1.19–1.13 Ga continental magmatism, sedimentation and metamorphism, Sveconorwegian province, S Norway

Cited by 63 publications

References 71 publications

The U–Pb age of the Finse batholith, a composite bimodal Sveconorwegian intrusion

The U–Pb age of the Finse batholith, a composite bimodal Sveconorwegian intrusion

Intermontane basins and bimodal volcanism at the onset of the Sveconorwegian Orogeny, southern Norway

Sedimentary recycling in arc magmas: geochemical and U–Pb–Hf–O constraints on the Mesoproterozoic Suldal Arc, SW Norway

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