Hansen, Bent Tauber

[["dc.bibliographiccitation.issue","15"],["dc.bibliographiccitation.journal","Geochimica et Cosmochimica Acta"],["dc.bibliographiccitation.volume","71"],["dc.contributor.author","Kleinhanns, Ilka C."],["dc.contributor.author","Nolte, Nicole"],["dc.contributor.author","Baero, Wiebke"],["dc.contributor.author","Hansen, Bent Tauber"],["dc.date.accessioned","2018-11-07T11:00:00Z"],["dc.date.available","2018-11-07T11:00:00Z"],["dc.date.issued","2007"],["dc.identifier.isi","000248789901197"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/50829"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Pergamon-elsevier Science Ltd"],["dc.publisher.place","Oxford"],["dc.relation.conference","17th Annual V M Goldschmidt Conference"],["dc.relation.eventlocation","Cologne, GERMANY"],["dc.title","Is dehydration melting responsible for the evolution of high-K granitic melts throughout the Precambrian?"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","173"],["dc.bibliographiccitation.issue","3-4"],["dc.bibliographiccitation.journal","GFF"],["dc.bibliographiccitation.lastpage","194"],["dc.bibliographiccitation.volume","133"],["dc.contributor.author","Nolte, Nicole"],["dc.contributor.author","Kleinhanns, Ilka C."],["dc.contributor.author","Baero, Wiebke"],["dc.contributor.author","Hansen, Bent T."],["dc.date.accessioned","2018-11-07T09:01:21Z"],["dc.date.available","2018-11-07T09:01:21Z"],["dc.date.issued","2011"],["dc.description.abstract","Granitoid to syenitoid petrogenesis along the Laurentia-Baltica continental margin occurred in two cycles. Within the Fennoscandian Shield, the first cycle is correlated with the 1.95-1.8 Ga Svecofennian domain and the second is correlated with the 1.85-1.65 Ga Transscandinavian Igneous Belt (TIB). Affiliation of Palaeoproterozoic granitoids to syenitoids (similar to 1.8 Ga) in a transitional zone between the Svecofennian domain to the north and the TIB to the south in the Vastervik area in southeast Sweden, is highly debated. In this study, the Vastervik granitoids to syenitoids have been studied for major and trace element, whole-rock Sm-Nd and U-Pb single zircon isotopic compositions. Field observations, petrography and geochemical composition allow discrimination into five groups ranging from tonalitic to syenogranitic compositions. Geochemical signatures indicate magnesian, metaluminous cordilleran character for three of them, whereas the two most differentiated groups show a transition into ferroan, peraluminous granites with postorogenic or A-type characters. The former three groups may be correlated with the TIB-1 suite at 1.81-1.77 Ga. The older of the A-type groups may be correlated with the TIB-0 suite that intruded at 1.87-1.84 Ga whereas the younger group possibly is related to the so-called granite-pegmatite suite. An earlier tectonic model implies a migration of the subduction zone system to the present southwest. The defined granitoid to syenitoid groups of the Vastervik region fit nicely into the model and support the idea of a new tectonic cycle to the south of the Bergslagen region."],["dc.identifier.doi","10.1080/11035897.2011.629308"],["dc.identifier.isi","000299035100006"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/24410"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","1103-5897"],["dc.title","Petrography and whole-rock geochemical characteristics of Vastervik granitoids to syenitoids, southeast Sweden: constraints on petrogenesis and tectonic setting at the southern margin of the Svecofennian domain"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","321"],["dc.bibliographiccitation.journal","Lithos"],["dc.bibliographiccitation.lastpage","337"],["dc.bibliographiccitation.volume","212"],["dc.contributor.author","Kleinhanns, Ilka C."],["dc.contributor.author","Whitehouse, Martin J."],["dc.contributor.author","Nolte, Nicole"],["dc.contributor.author","Baero, Wiebke"],["dc.contributor.author","Wilsky, F."],["dc.contributor.author","Hansen, Bent T."],["dc.contributor.author","Schoenberg, R."],["dc.date.accessioned","2018-11-07T10:03:45Z"],["dc.date.available","2018-11-07T10:03:45Z"],["dc.date.issued","2015"],["dc.description.abstract","Observed geochemical and geophysical signatures in the southern Svecofennian domain (SD) and the Transscandinavian Igneous Belt (TIE) are explained through a model of tectonic cycling and episodic southwestward migration of a subduction zone system. The Vastervik area is located between these two major tectonic domains and as such has received much attention. Granitoids of the Vastervik area were recently re-grouped and classified within the context of this larger regional tectonic model, but a discrepancy between previous relative age estimations and the few available granitoid age determinations was noted. To address this issue, we have dated 13 granitoid samples using a high spatial resolution secondary ion mass spectrometry (SIMS) U-Pb technique. Our new results constrain the intrusion of the majority of granitoids to 1819-1795 Ma, thus placing them into the TIB-1 period. This age range also encompasses our new ages from the central granodiorite belt and the Oro-Hamno pluton, demonstrating a previous overestimation of older granitoid generations in the Vastervik area. Nonetheless, it is shown that Askersund/TIB-0 magmatism, represented by an augen gneiss sample dated to 1846 Ma, is unambiguously present as far south as the Vastervik region. The anatectically generated leucogranites reveal TIB-1 ages and, as expected, older inherited zircon derived from the parental metasedimentary Vastervik formation. By simple Sr-Nd isotope modeling it is further possible to deduce that most TIB-1 granitoids follow a simple (assimilation-) fractional crystallization petrogenetic trend. The youngest granitoid generation was produced through low-pressure fluid-absent crustal melting. In conclusion, granitoids of the Vastervik area fit well into the proposed model for south-westward migration of a subduction zone system active in the Svecofennian domain and represent a new tectonic cycle. It is therefore possible to link the Svecofennian domain and the Transscandinavian Igneous Belt within a single evolutionary scenario explaining the observed granitoid petrology, geochemistry and geochronology. The study area is located at the edge of a particularly long-lived active continental margin that started to operate during the supercontinent Columbia at ca. 1.8 Ga and the presented model explains how this margin initiated at its eastern end. (C) 2014 Elsevier B.V. All rights reserved."],["dc.description.sponsorship","Carl-Zeiss-Foundation"],["dc.identifier.doi","10.1016/j.lithos.2014.10.013"],["dc.identifier.isi","000348879200022"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/38542"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","1872-6143"],["dc.relation.issn","0024-4937"],["dc.title","Mode and timing of granitoid magmatism in the Vastervik area (SE Sweden, Baltic Shield): Sr-Nd isotope and SIMS U-Pb age constraints"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","505"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","Open Journal of Geology"],["dc.bibliographiccitation.lastpage","517"],["dc.bibliographiccitation.volume","04"],["dc.contributor.author","Hansen, Bent T."],["dc.contributor.author","Wemmer, Klaus"],["dc.contributor.author","Putthapiban, Prinya"],["dc.contributor.author","Kleinhanns, Ilka C."],["dc.contributor.author","Wilsky, Franziska"],["dc.date.accessioned","2019-07-09T11:41:20Z"],["dc.date.available","2019-07-09T11:41:20Z"],["dc.date.issued","2014"],["dc.description.abstract","U/Pb-SHRIMP dating and Pb stepwise leaching (PbSL) experiments on zircons and garnets, respectively have confirmed the lack of Precambrian outcrops within the crystalline basement of Thailand. The obtained data for the high grade metamorphism show Indosinian ages ranging from 225 - 200 Ma as previously suggested for the vast majority of outcrops in NW-Thailand ([1] and references therein), as well as a small group of ages in the range of 445 Ma in the Lampang Province. Further, the age of a thermal imprint around 60 Ma was confirmed near Surat Thani, Peninsular Thailand, and only a few indications of older ages for the unknown source areas were detected in detrital components."],["dc.identifier.doi","10.4236/ojg.2014.410037"],["dc.identifier.fs","613539"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/11941"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/58402"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","2161-7589"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0/"],["dc.title","Do U/Pb-SHRIMP Dating and Pb Stepwise Leaching (PbSL) Analyses Confirm the Lack of Precambrian Basement Outcrops in Thailand?"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","39"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","International Journal of Earth Sciences"],["dc.bibliographiccitation.lastpage","55"],["dc.bibliographiccitation.volume","101"],["dc.contributor.author","Kleinhanns, Ilka C."],["dc.contributor.author","Fischer-Goedde, M."],["dc.contributor.author","Hansen, Bent Tauber"],["dc.date.accessioned","2018-11-07T09:15:54Z"],["dc.date.available","2018-11-07T09:15:54Z"],["dc.date.issued","2012"],["dc.description.abstract","The Paleoproterozoic Vastervik formation represents the southernmost exposure of Svecofennian metasediments and comprises a large psammitic succession of up to 5,000 m thickness dominated by quartzite with minor pelite and arkose. The Vastervik formation was deposited in a time interval of similar to 30 m.y. from 1.88 until 1.85 Ga. Whole-rock geochemical data and Rb-Sr-Sm-Nd analyses in combination with bulk zircon U-Pb ID-TIMS studies help to gain insight into the depositional and geodynamic history of the metasiliciclastic units of the Vastervik formation. Discrimination function diagrams show good agreement of major element composition with petrographic characterisation pointing towards a quartzose sedimentary provenance area with a tendency towards felsic igneous provenance. Trace element characteristics show typical upper crustal composition and remarkably similar patterns despite the respective petrographic differences. Sm-Nd isotope systematics reveal a restricted range of TDM with 2.3 +/- A 0.1 Ga and initial Nd (1.80 Ga) values from -4 to -2. These values are in agreement with known values from other Svecofennian sedimentary basins and support the interpretation of the Vastervik formation as a typical Svecofennian metasedimentary sequence. Three samples were analysed with the zircon U-Pb ID-TIMS technique, and resulting mixing ages of similar to 2.1 Ga are typical for Svecofennian metasediments. The final stage of the geodynamic history of the Vastervik area was a HT/LP overprint that caused intense migmatisation and anatectic production of in situ granite melts. This was accompanied by large-scale metasomatism, which led to a regional disturbance of the Rb-Sr isotope system indicating an age of similar to 1,750 Ma for this event. This age overlaps with timing of the tectonic activity of the Loftahammar-Linkoping deformation zone (LLDZ), a large-scale deformation zone, lying directly to the north of the study area, presumably linking these two events."],["dc.description.sponsorship","DAAD [313/S]"],["dc.identifier.doi","10.1007/s00531-011-0667-x"],["dc.identifier.isi","000298652900004"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/27812"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","1437-3254"],["dc.title","Sr-Nd isotope and geochemical characterisation of the Paleoproterozoic Vastervik formation (Baltic Shield, SE-Sweden): a southerly exposure of Svecofennian metasiliciclastic sediments"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","15"],["dc.bibliographiccitation.journal","Geochimica et Cosmochimica Acta"],["dc.bibliographiccitation.volume","71"],["dc.contributor.author","Nolte, Nicole"],["dc.contributor.author","Baero, Wiebke"],["dc.contributor.author","Hansen, Bent Tauber"],["dc.contributor.author","Kleinhanns, Ilka C."],["dc.date.accessioned","2018-11-07T11:00:01Z"],["dc.date.available","2018-11-07T11:00:01Z"],["dc.date.issued","2007"],["dc.identifier.isi","000248789901660"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/50833"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Pergamon-elsevier Science Ltd"],["dc.publisher.place","Oxford"],["dc.relation.conference","17th Annual V M Goldschmidt Conference"],["dc.relation.eventlocation","Cologne, GERMANY"],["dc.title","Stabilisation of continental crust by dehydration melting: An example from the Vastervik area, SE-Sweden"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","13"],["dc.bibliographiccitation.journal","Geochimica et Cosmochimica Acta"],["dc.bibliographiccitation.volume","73"],["dc.contributor.author","Nolte, Nicole"],["dc.contributor.author","Kleinhanns, Ilka C."],["dc.contributor.author","Hansen, Bent T."],["dc.contributor.author","Fullgraf, Thomas"],["dc.date.accessioned","2018-11-07T08:29:16Z"],["dc.date.available","2018-11-07T08:29:16Z"],["dc.date.issued","2009"],["dc.identifier.isi","000267229902361"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/16606"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Pergamon-elsevier Science Ltd"],["dc.publisher.place","Oxford"],["dc.relation.eventlocation","Davos, SWITZERLAND"],["dc.title","First geochemical and isotope characteristics of amphibolites of the Huab Metamorphic Complex (NW-Namibia)"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]