Search Results - "Ahall, K I"

Mesoproterozoic bimodal volcanism in SW Norway, evidence for recurring pre-Sveconorwegian continental margin tectonism by Brewer, T.S., Åhäll, K.-I., Menuge, J.F., Storey, C.D., Parrish, R.R.

“…Between ca. 1.3 Ga and the onset of the Sveconorwegian orogeny (ca. 1.0 Ga) in the Baltic Shield, the margin of Baltica was subjected to repeated episodes of…”
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Geochemistry of late Mesoproterozoic volcanism in southwestern Scandinavia; implications for Sveconorwegian/Grenvillian plate tectonic models by Brewer, T. S, Ahall, K. I, Darbyshire, D. P. F, Menuge, J. F

“…The last magmatic stage before the Sveconorwegian orogeny in the Baltic Shield is represented by bimodal, c. 1.16 Ga volcanics from the Bandak Group in…”
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Ion probe zircon dating of metasedimentary units across the Skagerrak: new constraints for early Mesoproterozoic growth of the Baltic Shield by Åhäll, K.I, Cornell, D.H, Armstrong, R

“…Cathodoluminescence images were used to select zircons for ion probe U–Pb dating of detrital grains and overgrowths in metasedimentary samples from three…”
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Long-lived (1.8–1.0 Ga) convergent orogen in southern Laurentia, its extensions to Australia and Baltica, and implications for refining Rodinia by Karlstrom, Karl E, Åhäll, Karl-Inge, Harlan, Stephen S, Williams, Michael L, McLelland, James, Geissman, John W

“…Between 1.8 and 1.0 Ga (Grenville-age), a series of subparallel accretionary orogens were added progressively to the southern edge of Laurentia. These belts…”
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Intermittent 1.53–1.13 Ga magmatism in western Baltica; age constraints and correlations within a postulated supercontinent by Åhäll, Karl-Inge, Connelly, Jim

“…Intermittent, widespread and often bimodal magmatism characterized the Mesoproterozoic development in both western Baltica and eastern Laurentia. Interorogenic…”
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Geochemistry of late mesoproterozic volcanism in southwestern scandinavia: Implications of Sveconorwegian/Grenvillian plate tectonic models by Brewer, T S, Ahall, K I, Darbyshire, D P F, Menuge, J F

“…The magmatic stage before the Sveconorwegian orogeny in the Baltic Shield is represented by bimodal, c. 1.16 Ga volcanics from the Bandak Group in Southern…”
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Growth-related 1.85-1.55 Ga magmatism in the Baltic Shield; a review addressing the tectonic characteristics of Svecofennian, TIB 1-related, and Gothian events by Åhäll, Karl-Inge, Larson, Sven Åke

“…During the late Palaeoproterozoic, western Baltica was characterised by convergent-margin tectonics that resulted in the formation of N-S trending crustal…”
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Contrasting magmatic arcs in the Palaeoproterozoic of the south-western Baltic Shield by Brewer, Tim S, Daly, J.Stephen, Åhäll, Karl-Inge

“…Following the Svecofennian arc accretionary growth and extensive granitoid magmatism in the Transscandinavian Igneous Belt (TIB), new crustal growth occurred…”
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The Gothian and Labradorian orogens: Variations in accretionary tectonism along a late Paleoproterozoic Laurentia-Baltica margin by Åhäll, Karl-Inge, Gower, Charles F.

“…Intermittent crustal growth characterised late Paleoproterozoic development in western Baltica during Gothian orogenesis, and in eastern Laurentia during…”
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Transitioning from Svecofennian to Transcandinavian Igneous Belt (TIB) magmatism in SE Sweden: Implications from the 1.82 Ga Eksjö tonalite by Åhäll, Karl-Inge, Connelly, James N., Brewer, Tim S.

“…The Eksjö intrusion forms a major tonalitic body in the Oskarshamn-Jönköping belt (OJB), SE Sweden. This is a NW-SE unit of dominantly intermediate granitoid…”
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The 963 Ma Vinga intrusion and post-compressional deformation in the Sveconorwegian orogen, SW Sweden by Åhäll, Karl-Inge, Schöberg, Hans

“…In Scandinavia, the 1.15-0.90 Ga Sveconorwegian orogen is transected by major N-S trending shear zones separating lithotectonic segments. East of the Oslo…”
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Growth-related 1.85-1.55 Ga magmatism in the Baltic Shield; a review addressing the tectonic characteristics of Svecofennian, TIB 1-related, and Gothian events - A reply by Åhäll, Karl-inge, Larson, Sven Åke

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Geochronology and structural setting of the 1.38 Ga Torpa granite; implications for charnockite formation in SW Sweden by Åhäll, Karl-Inge, Samuelsson, Lennart, Persson, Per-Olof

“…In the Varberg region of the Southwest Scandinavian Domain in SW Sweden, the megacrystic Torpa granite forms a sheet-like, partly charnockitic intrusion in…”
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Evidence for a penetrative regional Gothian gneiss-forming event in the granulite area of the southern Sveconorwegian orogen, SW Sweden by Åhall, Karl-Inge, Connelly, James N., Christoffel, Cathy, Larson, Sven Åke

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