Search Results - "SÖDERLUND, Ulf"
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Precambrian mafic dyke swarms in the Singhbhum craton (eastern India) and their links with dyke swarms of the eastern Dharwar craton (southern India)
Published in Precambrian research (01-08-2019)“…•A new U-Pb ID-TIMS age 2256 ± 6 Ma is obtained for NE to ENE trending mafic dyke swarm.•Seven distinct Precambrian mafic dyke swarms are identified in the…”
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Large Igneous Provinces and supercontinents: Toward completing the plate tectonic revolution
Published in Lithos (01-08-2013)“…Regional groupings of a majority, or all, of Earth's crustal blocks have occurred several times in Earth history, but only the most recent supercontinent…”
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The 920–900 Ma Bahia-Gangila LIP of the São Francisco and Congo cratons and link with Dashigou-Chulan LIP of North China craton: New insights from U-Pb geochronology and geochemistry
Published in Precambrian research (01-08-2019)“…•Additional units of the 920–900 Ma Bahia-Gangila LIP (Brazil-Africa) are identified.•Santa Maria de Itabira gabbro U-Pb ages are 940 ± 42 Ma, 912 ± 17 Ma, and…”
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A Ca. 2.25 Ga mafic dyke swarm discovered in the Bastar craton, Central India: Implications for a widespread plume-generated large Igneous Province (LIP) in the Indian shield
Published in Precambrian research (15-07-2021)“…•A new precise U–Pb baddeleyite ID-TIMS age (2251 ± 4 Ma) is obtained for an ENE-trending mafic dyke from the Bastar craton.•The age of this new swarm closely…”
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Iron-rich Ca Mg skarns from the SW East European Craton (Lithuania): Microstructural study, mineral reactions and direct age constraints of ore-forming events using LA-ICPMS
Published in Lithos (01-10-2024)“…The Varena Iron Ore deposit in the SW East European Craton is a significant ore body that occurs within metamorphosed and hydrothermally reworked…”
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U-Pb baddeleyite ages, distribution and geochemistry of 925 Ma mafic dykes and 900 Ma sills in the North China craton: Evidence for a Neoproterozoic mantle plume
Published in Lithos (01-11-2011)“…Numerous Neoproterozoic mafic dykes, referred to as the Dashigou swarm, are identified in the central and southeastern parts of the North China craton (NCC)…”
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The early Statherian (ca. 1800–1750 Ma) Prutivka-Novogol large igneous province of Sarmatia: Geochronology and implication for the Nuna/Columbia supercontinent reconstruction
Published in Precambrian research (15-06-2021)“…•New ages (1789 ± 2 and 1781 ± 7 Ma) were obtained for dolerite intrusions in Sarmatia.•Ca. 1800–1750 Ma rocks constitute the Prutivka-Novogol large igneous…”
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Major-trace element and Sr-Nd isotope compositions of mafic dykes of the Singhbhum Craton: Insights into evolution of the lithospheric mantle
Published in Lithos (01-02-2021)“…The Singhbhum Craton in eastern India is host to at least seven sets of mafic dyke swarms. Four previously dated swarms (studied here) include the NNE-trending…”
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A paleomagnetic and U-Pb geochronology study of the western end of the Grenville dyke swarm: Rapid changes in paleomagnetic field direction at ca. 585 Ma related to polarity reversals?
Published in Precambrian research (01-02-2015)“…A paleomagnetic study of the western end of the similar to 585 Ma Grenville dyke swarm shows that individual dykes are characterized by high coercivity and…”
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Nature of three episodes of Paleoproterozoic magmatism (2180Ma, 2115Ma and 1890Ma) in the Liaoji belt, North China with implications for tectonic evolution
Published in Precambrian research (01-09-2017)“…[Display omitted] •Three episodes of igneous events (2180Ma, 2115Ma and 1890Ma) are analyzed.•The ∼2180Ma A-type granites share the same source as the Haicheng…”
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Identification of a new 485 Ma post-orogenic mafic dyke swarm east of the Pan-African Saldania-Gariep Belt of South Africa
Published in Precambrian research (01-03-2021)“…•Two NNW-striking dykes in western South Africa were thought to be part of the c. 132 Ma Parana – Etendeka Large Igneous Province.•The Namaqualand-Garies dykes…”
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Phosphorus and Potassium Metasomatic Enrichment in the Mantle Source of the c. 1450–1425 Ma Michael–Shabogamo Gabbro of Eastern Laurentia
Published in Journal of petrology (01-01-2019)“…Abstract A c. 1450 Ma, east–west-oriented suite of Proterozoic mafic intrusions in eastern Canada, located between Labrador City and coastal Labrador near…”
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Cooling history and age of magnetization of a deep intrusion: A new 1.7 Ga key pole and Svecofennian-post Svecofennian APWP for Baltica
Published in Precambrian research (01-08-2019)“…•A cooling history for a deep Paleoproterozoic intrusion has been demonstrated.•The magnetization age of the deep intrusion is close to that of the…”
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Zircon Growth during Progressive Recrystallization of Gabbro to Garnet Amphibolite, Eastern Segment, Sveconorwegian Orogen
Published in Journal of petrology (01-01-2017)“…The interpretation of whether a dated metamorphic zircon generation grew during the prograde, peak or retrograde stage of a metamorphic cycle is critical to…”
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U-Pb geochronology of the plumbing system associated with the Late Cretaceous Strand Fiord Formation, Axel Heiberg Island, Canada: part of the 130-90 Ma High Arctic large igneous province
Published in Journal of geodynamics (01-07-2018)“…The c. 130-90 Ma High Arctic Large Igneous Province (HALIP) greatly influenced the geological evolution of Canada’s Arctic Islands along with formerly adjacent…”
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Mesoproterozoic (1.47–1.44 Ga) orogenic magmatism in Fennoscandia; Baddeleyite U–Pb dating of a suite of massif-type anorthosite in S. Sweden
Published in International journal of earth sciences : Geologische Rundschau (01-04-2009)“…The Jönköping Anorthositic Suite (JAS) in S. Sweden has characteristics typical for (Proterozoic) massif-type anorthosites. The interstitial liquid of these…”
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The U-Pb zircon and baddeleyite ages of the Neoproterozoic Volyn Large Igneous Province: implication for the age of the magmatism and the nature of a crustal contaminant
Published in GFF (02-01-2016)“…The Volyn continental flood basalt province is situated on the western margin of the East European platform and constitutes a significant portion of the…”
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Paleomagnetism and U-Pb age of the 2.4 Ga Erayinia mafic dykes in the south-western Yilgarn, Western Australia: Paleogeographic and geodynamic implications
Published in Precambrian research (01-04-2015)“…We present results from a paleomagnetic study of the previously undated Erayinia dykes intruding the south-western Yilgarn Craton. The U-Pb TIMs baddeleyite…”
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Congo-São Francisco craton in Paleoproterozoic-Mesoproterozoic supercontinent Nuna
Published in Precambrian research (15-06-2024)“…•A new robust U-Pb baddeleyite age of 1385 ± 5 Ma for Virei dyke swarm, Angola.•A new 1385 Ma paleomagnetic pole for Congo-São Francisco (CSF) craton.•A…”
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