{"instituterec":{"StatusID":1,"InsID":115,"StandardName":"Isotopen Geologie en Evolutie van het Paleo-Milieu","OrigName":"Isotope Geology and Evolution of the Paleoenvironments","OrigNameLangCode":"en","OrigNameLangID":15,"Acronym":"VUB-GEOL","HigherInsID":2319,"VlizCoreFlag":1,"AdrID":111175,"Line1":"Pleinlaan 2","Line2":"1050 Brussel","Line3":null,"Line4":null,"Phone":"+32-(0)2-629 33 82","GSM":null,"Email":"ekeppens@vub.ac.be","Lat":"50.8225315","Lon":"4.3910980","OrigNameLang":"English","OrigNameLangNL":"Engels","AbstractEnglish":"Research focuses on Earth and environmental sciences, which means a broad scope of interests. The experimental approach using 'isotope geology' is original and unique in Flanders. The department' labs host several mass spectrometers for the precise determination of several key isotopic systems. The isotopes are powerful geological tools, with a broad range of application, often resulting in stimulating inter-university projects and international collaborations. What can isotopes bring about to the knowledge of geologic and environmental processes? Fractionation processes affecting the light isotopes (O, N, C, H, S) are important in many field of Earth and environmental sciences. They can permit to identify past climatic changes, or physico-chemical modification affection low and high temperature geolological systems. The stable isotope signature can also be used as a tracer of various processes in hydrogeology for example or to characterize organic matter in sediments. But these techniques also have applications in other fields from medical sciences to the food industry for example. Geochronology is based on a radioactive-radiogenic isotope pairs, in the present case K40 and Ar40 (K-Ar and Ar-Ar methods). This versatile method allows the numerical dating of rocks older than the Earth (4.6 billion years) to the eruption of the Vesuvius in roman times (-79 BC). Geochronology is of paramount importance in many geological questions from calibrating the stratigraphic time scale to the timing of various volcanic events. ","AbstractOtherLang":"Het wetenschappelijk onderzoek in de geologie aan de VUB spitst zich toe op de isotopengeologie. \r\nEen fundamentele werkhypothese in de geologie is het actualiteitsprincipe : \"de geologische structuren en gesteenten, die we in de aardkorst vinden, zijn het resultaat van de processen in het verleden die vergelijkbaar zijn met processen die vandaag in en aan de aardkorst plaatsgrijpen\" (het \"Principle of confornianism\" van Charles Lyell, 1833). Dit principe kan ook omgekeerd aangewend worden.\r\nDe klimaats- en milieuveranderingen die in het verleden gebeurden - en die qua mechanismen vergelijkbaar zijn met de huidige \"natuurlijke\" veranderingen - liggen opgetekend in de opeenvolgende geologische afzettingen. Door deze te onderzoeken wordt de continue geologische registratie van milieuveranderingen beter en beter ontrafeld. Deze kennis is de cruciale sleutel om de mechanismen van onze klimaatswijzigingen en Global Changes te begrijpen en te kunnen modelleren naar de toekomst toe. \r\nIn de geochronologie - en meer bepaald met de isotopendateringsmethoden - worden gesteenten of geologische gebeurtenissen gedateerd in absolute getallen : in miljoenen of duizenden jaren, met een juist geschatte (zo klein mogelijke) meetfout. In dit domein werkt de onderzoeksgroep Geochronologie (CHRO).\r\nMet sporenelementenanalyse en stabiele isotopengeochemie (het belangrijkste actieterrein van de onderzoeksgroep Isotopengeochemie (GISO)) wordt getracht de geologisch opgetekende chemische en isotopische signalen numeriek te vertalen naar paleo-klimatologische of paleo-omgevingsparameters. \r\nOp experimenteel analytisch vlak hebben beide onderzoeksgroepen de massaspectrometrische bepaling van isotopenverhoudingen gemeen ... maar wel met verschillende massaspectrometers. Met de isotopengeochemie van edelgassen (Ar) (in CHRO) en van lichte stabiele isotopen (in GISO), neemt het geologie-onderzoek aan de VUB een unieke plaats in Vlaanderen (en in België) in.","AbstractLangCode":"nl","AbstractLangID":41,"AbstractLang":"Dutch","AbstractLangNL":"Nederlands","SuccessorOfInsID":null,"DateLastModified":{"date":"2024-06-04 01:34:19.073000","timezone_type":1,"timezone":"+00:00"},"PrevIns":null,"PrevAcro":null,"PublicFlag":1,"CheckedFlag":1,"ParID":2956,"InstituteType":"Scientific","EnvName":"Belgium","ISO3166":"BE","LevelName":null,"ND":"2003-11-26","UD":"2009-02-19","EncAddress":", Pleinlaan 2, 1050 Brussel, Belgium"},"parent":{"PublicFlag":1,"InsID":2319,"OrigNameLangCode":"en","OrigNameLangID":15,"FullStandardName":"Vrije Universiteit Brussel; Faculteit Wetenschappen; Vakgroep Geologie","FullOrigName":"Vrije Universiteit Brussel; Department of Geology","Acronym":"VUB"},"institutes":null,"references":[{"BRefID":295808,"RR":"<b>Alvarez, D.; Fagel, N.; Araneda, A.; Jana-Pinninghoff, P.; Keppens, E.; Urrutia, R.</b> (2015). Late Holocene climate variability on the eastern flank of the Patagonian Andes (Chile): a Δ<sup>18</sup>O record from mollusks in Lago Cisnes (47°S). <i>Holocene 25(8)</i>: 1220-1230. <a href=\"https://dx.doi.org/10.1177/0959683615580859\" target=\"_blank\">https://dx.doi.org/10.1177/0959683615580859</a>","PeerRev":1},{"BRefID":100935,"RR":"<b>Gillikin, D.P.; Lorrain, A.; Navez, J.; Taylor, J.W.; André, L.; Keppens, E.; Baeyens, W.; Dehairs, F.</b> (2005). Strong biological controls on Sr/Ca ratios in aragonitic marine bivalve shells. <i>Geochem. Geophys. Geosyst. 6(5)</i>: Q05009 (16 pp.). <a href=\"http://dx.doi.org/10.1029/2004GC000874\" target=\"_blank\">dx.doi.org/10.1029/2004GC000874</a>","PeerRev":1},{"BRefID":231821,"RR":"<b>Hong, W.; Keppens, E.; Nielsen, P.; Vanriet, A.</b> (1995). Oxygen and carbon isotope study of the Holocene oyster reefs and paleoenvironmental reconstruction on the northwest coast of Bohai Bay, China. <i>Mar. Geol. 124(1-4)</i>: 289-302. <a href=\"http://dx.doi.org/10.1016/0025-3227(95)00046-2\" target=\"_blank\">dx.doi.org/10.1016/0025-3227(95)00046-2</a>","PeerRev":1},{"BRefID":110528,"RR":"<b>Paepe, R.; Mariolakos, I.; Van Overloop, E.; Keppens, E.</b> (1990). Last Interglacial-Glacial North-South geosoil traverse (from stratotypes in the North Sea Basin and in the Eastern Mediterranean). <i>Quaternary International 5</i>: 57-70","PeerRev":1}],"conferences":null,"datasets":null,"persons":[{"PersID":12178,"Surname":"Claeys","Firstname":"Philippe","Initials":"P.","DirectorFlag":null,"MarineSciFlag":null,"SpecializedFlag":null,"Function":"Head of service"},{"PersID":18613,"Surname":"Coenaerts","Firstname":"Jan","Initials":"J.","DirectorFlag":null,"MarineSciFlag":null,"SpecializedFlag":null,"Function":"PhD student - Research Assistant"},{"PersID":18616,"Surname":"De Bondt","Firstname":"Kevin","Initials":"K.","DirectorFlag":null,"MarineSciFlag":null,"SpecializedFlag":null,"Function":"Researcher"},{"PersID":18615,"Surname":"Goderis","Firstname":"Steven","Initials":"S.","DirectorFlag":null,"MarineSciFlag":null,"SpecializedFlag":null,"Function":"PhD student"},{"PersID":157,"Surname":"Keppens","Firstname":"Edward","Initials":"E.","DirectorFlag":null,"MarineSciFlag":null,"SpecializedFlag":null,"Function":"Professor"},{"PersID":12181,"Surname":"Mas","Firstname":"Rémy","Initials":"R.","DirectorFlag":null,"MarineSciFlag":null,"SpecializedFlag":null,"Function":"PhD student"},{"PersID":18614,"Surname":"Renson","Firstname":"Virginie","Initials":"V.","DirectorFlag":null,"MarineSciFlag":null,"SpecializedFlag":null,"Function":"PhD student"},{"PersID":18617,"Surname":"Van Rampelbergh","Firstname":"Maite","Initials":"M.","DirectorFlag":null,"MarineSciFlag":null,"SpecializedFlag":null,"Function":"PhD student"}],"pastpers":[{"PersID":12184,"Surname":"Bashar","Firstname":"Baharak","Initials":"B.","DirectorFlag":null,"MarineSciFlag":null,"SpecializedFlag":null,"Function":null},{"PersID":12183,"Surname":"De Geest","Firstname":"Pierre","Initials":"P.","DirectorFlag":null,"MarineSciFlag":null,"SpecializedFlag":null,"Function":"Part-Time teaching Assistant"},{"PersID":12180,"Surname":"Heyvaert","Firstname":"Vanessa","Initials":"V.","DirectorFlag":null,"MarineSciFlag":null,"SpecializedFlag":null,"Function":"PhD student"},{"PersID":12182,"Surname":"Kolo","Firstname":"Kamal","Initials":"K.","DirectorFlag":null,"MarineSciFlag":null,"SpecializedFlag":null,"Function":"PhD student"},{"PersID":12179,"Surname":"Tagle","Firstname":"Roald","Initials":"R.","DirectorFlag":null,"MarineSciFlag":null,"SpecializedFlag":null,"Function":"Post-doc"}],"subpers":null,"projects":[{"ProID":25,"Acronym":null,"Progress":"Completed","StandardTitle":"Interaction between water column and intertidal zones of Scheldt River: Biogeochemical cycles of C and N"},{"ProID":2953,"Acronym":null,"Progress":"Completed","StandardTitle":"Marine Research Drilling - The ESF Magellan Workshop Series."},{"ProID":1143,"Acronym":"OMES 1 Main","Progress":"Completed","StandardTitle":"Research on the environmental effects of the SIGMA plan"},{"ProID":1155,"Acronym":"OMES 1","Progress":"Completed","StandardTitle":"Water balance"},{"ProID":664,"Acronym":null,"Progress":"Completed","StandardTitle":"Quaternary climate reconstruction through stabile isotope research of continental sediments"},{"ProID":2295,"Acronym":null,"Progress":"Completed","StandardTitle":"Use of sclerosponges (Porifera) as biorecorders of environmental changes"}],"urls":[{"URL":"seadatanet.maris2.nl/v_edmo/print.asp?n_code=2075","externalID":"2075","URLTypeCode":"EDMO_ID","URLType":"EDMO_ID"},{"URL":"we.vub.ac.be/~dglg","externalID":null,"URLTypeCode":null,"URLType":"Institute home page"}],"pictures":[],"published":null,"affrefs":null,"collections":null,"thesterms":[{"ThesaurusTerm":"Biogeochemical cycle","ThestID":936,"ThesTypID":1,"ThesType":"ASFA Thesaurus List"},{"ThesaurusTerm":"Isotopes","ThestID":4508,"ThesTypID":1,"ThesType":"ASFA Thesaurus List"},{"ThesaurusTerm":"Palaeoclimate","ThestID":5968,"ThesTypID":1,"ThesType":"ASFA Thesaurus List"},{"ThesaurusTerm":"Palaeoenvironments","ThestID":5972,"ThesTypID":1,"ThesType":"ASFA Thesaurus List"}],"taxterms":null,"geoterms":null,"thestermsFRIS":[{"ThesaurusTerm":"Biogeochemical cycle","DutchTerm":"Biogeochemische cyclus","ThestID":936,"ThesTypID":1,"ThesType":"ASFA Thesaurus List","Code":"c_32983"},{"ThesaurusTerm":"Isotopes","DutchTerm":"Isotopen","ThestID":4508,"ThesTypID":1,"ThesType":"ASFA Thesaurus List","Code":"c_11852"},{"ThesaurusTerm":"Palaeoclimate","DutchTerm":"Paleoklimaten","ThestID":5968,"ThesTypID":1,"ThesType":"ASFA Thesaurus List","Code":"c_ece57f7a"},{"ThesaurusTerm":"Palaeoenvironments","DutchTerm":"Paleomilieus","ThestID":5972,"ThesTypID":1,"ThesType":"ASFA Thesaurus List","Code":"c_094dd3e6"}],"nXtins":null,"previns":null,"spcols":[{"SpColID":99,"SpName":"Marine expertise"},{"SpColID":127,"SpName":"Marine expertise: Speciality: Earth sciences"},{"SpColID":121,"SpName":"Marine expertise: Type: Flemish university"},{"SpColID":27,"SpName":"ScheldeMonitor"},{"SpColID":130,"SpName":"Waterbouwkundig Laboratorium"}],"resmessage":"","complete":1,"participantrec":null,"peerrevs":4,"urlmaps":[]}