Hansen, Bent Tauber

[["dc.bibliographiccitation.firstpage","875"],["dc.bibliographiccitation.issue","08"],["dc.bibliographiccitation.journal","Open Journal of Geology"],["dc.bibliographiccitation.lastpage","894"],["dc.bibliographiccitation.volume","06"],["dc.contributor.author","Hansen, Bent T."],["dc.contributor.author","Wemmer, Klaus"],["dc.contributor.author","Eckhardt, Monique"],["dc.contributor.author","Putthapiban, Prinya"],["dc.contributor.author","Assavapatchara, San"],["dc.date.accessioned","2019-07-09T11:43:02Z"],["dc.date.available","2019-07-09T11:43:02Z"],["dc.date.issued","2016"],["dc.description.abstract","Bamnet Narong is located in northeastern Thailand (Chaiyaphum Province). It is the largest salt mine in the country and has been mined for decades. The landscape in this part of Thailand is characterised by a low plateau, which is called the Khorat Plateau. The plateau is divided into two basins by the Phu Phan Range, the Sakhon Nakhon Basin in the north and the Khorat Basin in the south. The analysed potashes and rock salts are deposited in the Maha Sarakham Formation, which represents the salt-bearing strata of the Khorat Basin. The stratigraphic age of this deposit has been debated since the late 1960’s. The assigned ages range from Mid-Cretaceous to Late Cretaceous and up to the Eocene. In this study different isotopic dating systems (Rb-Sr, Sr-Sr, K-Ar and K-Ca) were applied. The stratigraphic age for the time of deposition was confirmed to be Mid Cretaceous (Cenomanian). Furthermore, the homogeneity of the carnallites was investigated in order to trace a possible redistribution of rubidium."],["dc.identifier.doi","10.4236/ojg.2016.68067"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14086"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/58808"],["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","Isotope Dating of the Potash and Rock Salt Deposit at Bamnet Narong, NE-Thailand"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","665"],["dc.bibliographiccitation.journal","Journal of Water Resource and Protection"],["dc.bibliographiccitation.lastpage","686"],["dc.bibliographiccitation.volume","8"],["dc.contributor.author","Hengsuwan, Manussawee"],["dc.contributor.author","Yongprawat, Monthon"],["dc.contributor.author","Simon, Klaus"],["dc.contributor.author","Hansen, Bent T."],["dc.date.accessioned","2019-07-09T11:42:27Z"],["dc.date.available","2019-07-09T11:42:27Z"],["dc.date.issued","2016"],["dc.description.abstract","Aquifer Storage and Recovery (ASR) was a pilot project for solving flood and drought problem in the northern part of Chao Phraya River basin, Thailand. This part of Thailand always faces flooding in rainy season and drought during dry season every year. The overexploitation of groundwater during dry season leads to continuously decline of water level in this area. In this project, the excessive surface water during rainy season was stored by injection of this treated surface water through recharge wells into the underground aquifers. This would serve to raise the water level, which can be extracted for use during the dry season. To assess the efficiency of the ASR process some tracers are required. The aim of this study is to prove the suitability of natural tracers to follow up the artificial recharge process; emphasis will be placed on Strontium (Sr) isotopic composition. The results showed that the change in 87Sr/86Sr ratios could be observed during an artificial recharge due to the different isotopic fingerprint of surface water and groundwater. However, the flow direction of the injected water cannot be clearly interpreted because of the limited number of monitoring wells, small distance between each monitoring well and the short duration of injection."],["dc.identifier.doi","10.4236/jwarp.2016.86055"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/13512"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/58675"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","1945-3108"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0/"],["dc.title","Isotope and REE Characterization of Groundwater Aquifers within the Aquifer Storage and Recovery Programme in Sukhothai (N.-Thailand)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","725"],["dc.bibliographiccitation.journal","Climate of the Past"],["dc.bibliographiccitation.lastpage","767"],["dc.bibliographiccitation.volume","5"],["dc.contributor.author","Marchant, R."],["dc.contributor.author","Cleef, A."],["dc.contributor.author","Harrison, S. P."],["dc.contributor.author","Hooghiemstra, H."],["dc.contributor.author","Markgraf, V."],["dc.contributor.author","van Boxel, J."],["dc.contributor.author","Ager, T."],["dc.contributor.author","Almeida, L."],["dc.contributor.author","Anderson, R."],["dc.contributor.author","Baied, C."],["dc.contributor.author","Behling, Hermann"],["dc.contributor.author","Berrio, J. C."],["dc.contributor.author","Burbridge, R."],["dc.contributor.author","Björck, S."],["dc.contributor.author","Byrne, R."],["dc.contributor.author","Bush, M."],["dc.contributor.author","Duivenvoorden, J."],["dc.contributor.author","Flenley, J."],["dc.contributor.author","De Oliveira, P."],["dc.contributor.author","van Geel, B."],["dc.contributor.author","Graf, K."],["dc.contributor.author","Gosling, W. D."],["dc.contributor.author","Harbele, S."],["dc.contributor.author","van der Hammen, T."],["dc.contributor.author","Hansen, B."],["dc.contributor.author","Kuhry, P."],["dc.contributor.author","Ledru, M.-P."],["dc.contributor.author","Mayle, F."],["dc.contributor.author","Leyden, B."],["dc.contributor.author","Lozano-Garcia, S."],["dc.contributor.author","Melief, A. M."],["dc.contributor.author","Moreno, P."],["dc.contributor.author","Moar, N. T."],["dc.contributor.author","Prieto, A."],["dc.contributor.author","van Reenen, G."],["dc.contributor.author","Salgado-Labouriau, M."],["dc.contributor.author","Schäbitz, F."],["dc.contributor.author","Schreve-Brinkman, E. J."],["dc.contributor.author","Wille, M."],["dc.contributor.author","Horn, S."],["dc.date.accessioned","2019-07-10T08:13:18Z"],["dc.date.available","2019-07-10T08:13:18Z"],["dc.date.issued","2009"],["dc.description.abstract","The biomisation method is used to reconstruct Latin American vegetation at 6000±500 and 18 000±1000 radiocarbon years before present (14C yr BP) from pollen data. Tests using modern pollen data from 381 samples derived from 287 locations broadly reproduce potential natural vegetation. The strong temperature gradient associated with the Andes is recorded by a transition from high altitude cool grass/shrubland and cool mixed forest to mid-altitude cool temperate rain forest, to tropical dry, seasonal and rain forest at low altitudes. Reconstructed biomes from a number of sites do not match the potential vegetation due to local factors such as human impact, methodological artefacts and mechanisms of pollen representivity of the parent vegetation. At 6000±500 14C yr BP 255 samples are analysed from 127 sites. Differences between the modern and the 6000±500 14C yr BP reconstruction are comparatively small; change relative to the modern reconstruction are mainly to biomes characteristic of drier climate in the north of the region with a slight more mesic shift in the south. Cool temperate rain forest remains dominant in western South America. In northwestern South America a number of sites record transitions from tropical seasonal forest to tropical dry forest and tropical rain forest to tropical seasonal forest. Sites in Central America show a change in biome assignment, but to more mesic vegetation, indicative of greater plant available moisture, e.g. on the Yucatán peninsula sites record warm evergreen forest, replacing tropical dry forest and warm mixed forest presently recorded. At 18 000±1000 14C yr BP 61 samples from 34 sites record vegetation reflecting a generally cool and dry environment. Cool grass/shrubland is prevalent in southeast Brazil whereas Amazonian sites record tropical dry forest, warm temperate rain forest and tropical seasonal forest. Southernmost South America is dominated by cool grass/shrubland, a single site retains cool temperate rain forest indicating that forest was present at some locations at the LGM. Some sites in Central Mexico and lowland Colombia remain unchanged in the biome assignments of warm mixed forest and tropical dry forest respectively, although the affinities that these sites have to different biomes do change between 18 000±1000 14C yr BP and present. The \"unresponsive\" nature of these sites results from their location and the impact of local edaphic influence."],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/5845"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/61200"],["dc.language.iso","en"],["dc.notes.intern","Migrated from goescholar"],["dc.rights","Goescholar"],["dc.rights.access","openAccess"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject","Pollen-based biome"],["dc.subject.ddc","570"],["dc.title","Pollen-based biome reconstructions for Latin America at 0, 6000 and 18 000 radiocarbon years ago"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["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.artnumber","e0140788"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","PLoS ONE"],["dc.bibliographiccitation.volume","10"],["dc.contributor.author","Kiel, Steffen"],["dc.contributor.author","Hansen, Bent T."],["dc.date.accessioned","2018-11-07T09:50:08Z"],["dc.date.available","2018-11-07T09:50:08Z"],["dc.date.issued","2015"],["dc.description.abstract","We report new examples of Cenozoic cold-seep communities from Colombia, Cuba, the Dominican Republic, Trinidad, and Venezuela, and attempt to improve the stratigraphic dating of Cenozoic Caribbean seep communities using strontium isotope stratigraphy. Two seep faunas are distinguished in Barbados: the late Eocene mudstone-hosted 'Joes River fauna' consists mainly of large lucinid bivalves and tall abyssochrysoid gastropods, and the early Miocene carbonate-hosted 'Bath Cliffs fauna' containing the vesicomyid Pleurophopsis, the mytilid Bathymodiolus and small gastropods. Two new Oligocene seep communities from the Sinu River basin in Colombia consist of lucinid bivalves including Elongatolucina, thyasirid and solemyid bivalves, and Pleurophopsis. A new early Miocene seep community from Cuba includes Pleurophopsis and the large lucinid Meganodontia. Strontium isotope stratigraphy suggests an Eocene age for the Cuban Elmira asphalt mine seep community, making it the oldest in the Caribbean region. A new basal Pliocene seep fauna from the Dominican Republic is characterized by the large lucinid Anodontia (Pegophysema). In Trinidad we distinguish two types of seep faunas: the mudstone-hosted Godineau River fauna consisting mainly of lucinid bivalves, and the limestone-hosted Freeman's Bay fauna consisting chiefly of Pleurophopsis, Bathymodiolus, and small gastropods; they are all dated as late Miocene. Four new seep communities of Oligocene to Miocene age are reported from Venezuela. They consist mainly of large globular lucinid bivalves including Meganodontia, and moderately sized vesicomyid bivalves. After the late Miocene many large and typical 'Cenozoic' lucinid genera disappeared from the Caribbean seeps and are today known only from the central Indo-Pacific Ocean. We speculate that the increasingly oligotrophic conditions in the Caribbean Sea after the closure of the Isthmus of Panama in the Pliocene may have been unfavorable for such large lucinids because they are only facultative chemosymbiotic and need to derive a significant proportion of their nutrition from suspended organic matter."],["dc.description.sponsorship","Open-Access Publikationsfonds 2015"],["dc.identifier.doi","10.1371/journal.pone.0140788"],["dc.identifier.isi","000363184600112"],["dc.identifier.pmid","26468887"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/12213"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/35649"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","1932-6203"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0/"],["dc.title","Cenozoic Methane-Seep Faunas of the Caribbean Region"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]