Tracking Colour

  • Published on
    08-Apr-2015

  • View
    110

  • Download
    2

Embed Size (px)

Transcript

<p>1</p> <p> the Copenhagen Polychromy Network</p> <p>Tracking ColourThe polychromy of Greek and Roman sculpture in the Ny Carlsberg Glyptotek Preliminary Report 1, 2009</p> <p>tracking colour The polychromy of Greek and Roman sculpture in the Ny Carlsberg Glyptotek Preliminary Report 1, 2009</p> <p> the Copenhagen Polychromy Network</p> <p>Tracking ColourThe polychromy of Greek and Roman sculpture in the Ny Carlsberg Glyptotek Preliminary Report 1, 2009</p> <p>Ny Carlsberg Glyptotek &amp; the Copenhagen Polychromy Network Tracking Colour The polychromy of Greek and Roman sculpture in the Ny Carlsberg Glyptotek Preliminary Report 1, 2009 The Copenhagen Polychromy Network is an interdisciplinary body formed in 2004 on the initiative of the Ny Carlsberg Glyptotek to conduct research on ancient sculptural polychromy in the collections of the Glyptotek. P a r ti ci p a n t s i n t h e C op e n ha ge n Po lych ro m y Ne two rk NyCarlsbergGlyptotek Jan Stubbe stergaard, MA, research curator, project coordinator Maria Louise Sargent, project conservator, B.Sc. TheDepartmentsofPaintingandMonumentalArt,TheSchoolofConservationofTheRoyal AcademyofFineArts,Copenhagen Mikkel Scharff, M.Sc., conservator, Head of Departments NordicCenterforEarthEvolution,NaturalHistoryMuseumofDenmark Professor, Dr. Minik T. Rosing TheInstituteofChemistry,TechnicalUniversityofDenmark,Copenhagen Rolf W. Berg, Ph.D., associate professor A ck no w l e d gm e n t s We gratefully acknowledge the grant for microscopes and camera given in 2008 by TheKirstenandFreddyJohansenFoundation V a l u a b l e ad v i c e a n d s u ppor t h a s g e ne ro u sly be e n pro vi de d by StatensMuseumforKunst TheNationalMuseumofDenmark LeicaMicrosystemsDenmarkA/S Editor:JanStubbestergaardandtheCopenhagenPolychromyNetwork Graphicdesign:JakobHelmer,MAA,Copenhagen(www.jakobhelmer.com) Published by the Ny Carlsberg Glyptotek, 2009 ISSN:1904-1888 Copyright:NyCarlsbergGlyptotekandtheauthors Copyrightandlicencestatement:www.creativecommons.org/licenses/by-nc-nd/3.0/</p> <p>tracking colour The polychromy of Greek and Roman sculpture in the Ny Carlsberg Glyptotek Preliminary Report 1, 2009</p> <p>ContentsContents Preface IntroducingtheCopenhagenPolychromyNetwork Jan Stubbe stergaard 4 5 6</p> <p>The Copenhagen Polychromy Network pilot project 20042008 The CPNPilotProject:abriefintroductionandevaluation Jan Stubbe stergaard InvestigatingthepolychromyofaClassicalAtticGreekmarblefemaleheadNCGIN2830 Mikkel Scharff, Rebecca Hast, Nicoline Kalsbeek, Jan Stubbe stergaard Preliminary results from geochemical analysis of pigments on ancient Greek &amp; Roman marble sculptures Minik T. Rosing and Jan Stubbe stergaard Raman spectroscopy characterization of colored pigments in archaeological materials Rolf W. Berg 11</p> <p>13</p> <p>41</p> <p>48</p> <p>The Copenhagen Polychromy Network main project 20082011 The CPNMainProject20082011:anoutline Jan Stubbe stergaard DocumentationandinvestigationoftracesofcolourontheArchaicSphinxNCG IN1203 Maria Louise Sargent, Lin Rosa Spaabek, Mikkel Scharff, Jan Stubbe stergaard 68</p> <p>74</p> <p>AuthorContact Other CPN activities</p> <p>90 91</p> <p>tracking colour The polychromy of Greek and Roman sculpture in the Ny Carlsberg Glyptotek Preliminary Report 1, 2009</p> <p>PrefaceFrom2004to2008,theNyCarlsbergGlyptotekandtheCopenhagenPolychromyNetwork (CPN)carriedoutaPilotProjectinthemuseumscollectionofGreekandRomansculpture. InJune2008westartedtheso-calledMainProjectwhichwillrununtil2011.Thefirstphase ofvisualexaminationbeganinJanuary2009andlasteduntilthissummer. SomeprovisionalresultsoftheseactivitiesarepublishedinthisfirstPreliminaryReport. The Report also contains an introduction to the CPNandoutlinesofboththePilotProject andtheMainProject.Theprotocolfollowedinvisualexaminationanddocumentationis notthesubjectofaseparatearticle,butispresentedinsteadasappliedinpractise. On a practical note, the system of citation and abbreviation in this Report is not homogenous. This first Preliminary Report will be followed by (at least) two more, to be published in 2010 and 2011. The format will be electronic and the publications will be freely available for downloadfromtheGlyptotekwebsiteatwww.glyptoteket.dk.Atpresent,financialrestrictions allow only a quite unsophisticated pdf-solution. IthasbeenourideaforsometimethatthefollowingReportsshouldhavetwosections:SectionIwithpreliminarypublicationoftheactualprojectresults;andaSectionIIcontaining other contributions on ancient sculptural polychromy, whether related to our results or not. Wefullyrealizethattheadventofbibliometricalmethodsofacademicratingwillmakeit evenlessattractivetopublishinaforumsuchasours.Itisthereforeourambitiontosee thefollowingReportsappearase-publicationsundertheauspicesofanaccreditedDanish academicpublisher.Suchapublisherhasalreadybeenfoundandinitialdiscussionshave taken place with positive results. A number of colleagues on our international advisory panelhaveagreedtoundertakepeer-reviewingofarticlesappearinginSectionII.Itremains to be seen whether the necessary funding can be found. Asitis,weinvitecontributionstosectionIIofthePreliminaryReport2,2010,tobereceivedno laterthanMay1,2010.Editorialguidelineswillbemadeavailableonrequesttothe ditor. E ItgoeswithoutsayingthatanycriticalcommentsonthisfirstReportandsuggestionsfor improvement will be much appreciated. Our thanks go at this point to all those within and outside the Ny Carlsberg Glyptotek who havecontributedtobringingourprojectthusfarespeciallytotheKirstenandFreddyJohansenFoundationforprovidinguswithmicroscopesandcamera,toLeicaMicrosystems DenmarkA/SandLarsHvalsumforuntiringsupportandadonationtotheproject.Moreover,totheStatensMuseumforKunstwhichhasgenerouslylentusglasspartitionsforthe projectworkspace.Finally,weexpressourappreciationoftheinterestandsupportshown bythemembersofourInternationalAdvisoryPanel.</p> <p>5</p> <p>JanStubbestergaard Editor On behalf of the Ny Carlsberg Glyptotek and the Copenhagen Polychromy Network</p> <p>tracking colour The polychromy of Greek and Roman sculpture in the Ny Carlsberg Glyptotek Preliminary Report 1, 2009</p> <p>IntroducingtheCopenhagen Polychromy NetworkJan Stubbe stergaard1</p> <p>6</p> <p>TheCopenhagenPolychromyNetwork(CPN)wasformedontheinitiativeoftheNyCarlsberg Glyptotek,Copenhagen,inthewakeoftheexhibitionClassiColorthecolourofancient sculpture.TheexhibitionwasshownatthemuseumfromMarchtoMay,2004.2</p> <p>Fa c t o r s det er m ining t h e e stabli shmen t of the networkThe decision to form the network was taken in the light of a number of different, but interrelatedfactors: Theexhibitionprojectmobilizedawarenessoftheimportanceofpolychromystudieswithin the museum. Theexhibitionwassuccessfulinreachingawideaudience,intermsofbothvisitornumbers andmediacoverage.Amongotherthings,thisservedtogenerateinterestandunderstandingamongavarietyofimportantaudiences,suchasinstitutionswithscientificresources relevanttothisfieldofarchaeologicalandarthistoricalresearch. ThecollectionofancientsculptureintheNyCarlsbergGlyptotekhas,since1991,beenthe subjectofsystematicdocumentationresultinginadigitallyproduced,printedcatalogueseriesavailablealsoinanEnglishversion.3Relevantdataonthecollection,intheformoftexts and high quality photography, are therefore now accessible to international scholarship. Thecataloguecontentsareintheprocessofbeingmadeavailableviaanobjectdatabaseon themuseumswebsite,www.glyptoteket.dk. Theonlyaspectofthecollectionnotyetsystematicallyexaminedanddocumentedisthat of traces of ancient polychromy.4 Thecollectionshavegoodpotentialforprovidinginformationonancientsculpturalpolychromy.ManyworkswereacquiredontheartmarketinRomefromthemiddleofthe1880s to the early years of the 20thcentury.Inthesameperiodacquisitionsweremadeontheart marketinMunichandinAthens.Afairproportionoftheseacquisitionswererecentfinds. Dealers were aware of the importance placed by the Glyptotek on acquiring works in as pristine a condition as possible. Overtheyears,subsequenttreatmentintheGlyptoteksdepartmentofconservationhas seen the application to many pieces of methods of cleaning which would not be acceptable todayandcastshavebeentakenofanumberofimportantworks.Itislikelythatthishas causedsomedamage.Apartfromworksacquiredfromoldcollections,ancientsculptures</p> <p>1 Researchcurator,ancientart,NyCarlsbergGlyptotek,DantesPlads7,DK-1556KbenhavnV.jso@glyptoteket.dk. 2 ThiswastheCopenhagenversionoftheexhibitionshownfirstintheStaatlicheAntikensammlungenundGlyptothek, Munich,in2003(BunteGtter.DieFarbigkeitantikerSkulptur)andlaterintheMuseiVaticani,in2004/5.Underthe auspicesoftheStiftungArchologie,Munich,andthroughtheeffortsofVinzenzBrinkmannandUlrikeKoch-Brinkmann,continuallyrevisedandexpandedversionsoftheexhibitionhavesincebeenpresentedatanumberofother venues.Thecontributionthusmadetogeneratingbothpublicandprofessionalinterestinthesubjectcanhardlybe overestimated. 3 ThecatalogueseriesisavailablefromthemuseumeShopatwww.glyptoteket.dk 4 AsisthecaseforallothermajorcollectionsofGreekandRomansculpture. tracking colour The polychromy of Greek and Roman sculpture in the Ny Carlsberg Glyptotek Preliminary Report 1, 2009</p> <p>Jan Stubbe stergaard Introducing the Copenhagen Polychromy Network</p> <p>7</p> <p>havehowevergenerallynotbeensubjectedtorigorouscleaning.Manypiecesretaintraces of polychromy.5 The museum houses collections of polychrome works in other art forms and from other cultures whose relevance as comparative material is becoming increasingly clear. We have Greek,EtruscanandRomanterracottas;Etruscanstonesculpture,Egyptianstonesculpture of all periods as well as Egyptian terracottas of the Hellenistic and Roman periods and paintedmummyportraitsfromRomanEgypt. Themuseumhadbecomeawareofthefactthattracesofancientpolychromyonthestone sculptures in its care were deteriorating and have in some cases disappeared. The processes atworkinthedeteriorationofancientpigmentsarenotyetbeenpreciselyunderstood.Action to document traces of polychromy in the collection was therefore agreed to have a high priority. Thedisciplinesneededtoconductresearchinancientpolychromyinamuseumcollection was available in Copenhagen. TheabovementionedfactorsdeterminedtheNetworksaimsandstructure.</p> <p>T h e N e t wo r k sa im sThe CPNs aim is to contribute to an increase of data available to the study of ancient sculptural polychromy through systematic documentation of traces of polychromy in the collectionofGreekandRomansculptureintheGlyptotek,in-depthconservationscientificand naturalscientificstudyofsculpturesidentifiedashavingspecialimportance,andpublication of the acquired data. Itwasdecidedthattheprojectpublicationsshouldappearinopenaccesselectronicformatswhosesophisticationwoulddependonavailablefunding.Ahighdegreeofinteractivity with readers was aimed for.</p> <p>T h e N e t works Structure: Pa r t i c i p at ing inst it ut io ns and competences Theparticipatinginstitutionsare: TheNyCarlsbergGlyptotek The Departments of Painting and Monumental Art at the School of Conservation of the RoyalDanishAcademyofFineArts,Copenhagen TheGeologicalMuseumandInstituteofGeology,UniversityofCopenhagen(NaturalHistory MuseumofDenmark) TheInstituteofChemistry,TechnicalUniversityofDenmark,Copenhagen.</p> <p>5 Visibleremainsofpigmenthavebeenobservedonc.120GreekandRomansculptures,fromminiaturetocolossal formats.Sinceexperiencehasshownthatcloseexaminationrevealsremainsnotseenbythenakedeye,thenumber ofsculpturesinthecollectionthatarerelevanttothisfieldofresearchiscertainlyhigher,butdifficulttoestimate. tracking colour The polychromy of Greek and Roman sculpture in the Ny Carlsberg Glyptotek Preliminary Report 1, 2009 the copenhagen polychromy network</p> <p>Jan Stubbe stergaard Introducing the Copenhagen Polychromy Network</p> <p>8</p> <p>Together, these institutions provide the competences needed in this field of research, namely:6 Classicalarchaeological,curatorialcompetence(1).AresearchcuratorofancientartattheNy Carlsberg Glyptotek directs the project, and is responsible project management, strategy andprioritiesincollaborationwiththemuseumscuratorialdepartmentanditsDirector.He is in charge of archaeological documentation, contact with museum conservation, network partners and an international collegial network. Museumconservationcompetence(2). This member of the team is in charge of a variety of conservationtasks:Visualexaminationanddocumentation(ambientlight,rakinglight,IRand UVphotography;microscopy;cross-sectionpreparationandinvestigation;documentation ofsamples;organisationofdigitaldata),anddialoguewiththecuratorialdepartmentand externalpartnersinconservationscience. Conservationandnaturalscientificcompetences(externalnetworkpartners)representedby(3)an experienced conservator, contributing in the field of scientific conservation photography; instrumental pigment analyses (SEM/EDX; FT-IR), chemical spot tests and pigment and binding media analysis. The network partners in natural science offer SEM/EDX, SEM/XRD, XRF and ICP-MS (InductivelyCoupledPlasmaMassSpectrometry)forpigmentidentification and pigment localisation through isotopic trace element analysis and comparative analyses ofprovenancedspecimens(4),andchemicalanalysesusingRamanLaserSpectroscopy(5). These external network partners offer their service free of charge.They also on occasion activatetheircontactsinotherfields,inDenmarkandabroad.</p> <p>T h e C PN so v er a l l st r at eg yAsimpleoverallstrategyconsistingofthreestageswasestablishedattheoutset.First,to carryoutaPilotProjectstudy,proceedingastheresourcesoftheCPN might allow. This was thentoprovideaplatformforstagetwo,amoreambitiousMainProject,plannedaccording to the resources that might be allotted by the museum or raised by other means. The last stagewastocompriseafinalpublicationoftheaccumulatedresultsandthecommunicationoftheseresultstothepublicintheformofanexhibitionattheNyCarlsbergGlyptotek.</p> <p>Pr o g r e s s h it h er t oAsitturnedout,byearly2008theresultsachievedbythePilotProjectledtoadecisionby themuseumtogoaheadwiththeMainProject.ThePilotProjectandsomeofitsresultsare dealt with elsewhere in this Report. Themuseumsmaincontributiontotheprojectwasafull-timepositionasresearchcuratorforthethreeyears20082011,andahalf-timepositionasprojectconservatorforthe same period.Applications for additional funding have not so far met with success the exceptionbeingagenerousdonationmadebytheKirstenandFreddyJohansenFoundation for the acquisition of instruments.</p> <p>6 In the following, the persons involved are referred to by numbers in brackets.They are (1) Jan Stubbe stergaard, research curator, MA; (2) Conservator Rebecca Hast and subsequently Maria Louise Sargent BA conservation and classical archaeology, post graduate student in conservation, (3) Mikkel Scharff, Head of the Paintings Department andoftheMonumentalArtDepartment.SchoolofConservation,TheRoyalAcademyofFineArts,Copenhagen(with attachedadvancedstudents),(4)Prof.dr.MinikRosing,NaturalHistoryMuseumofDenmark,(5)Associateprofessor RolfW.Berg,Phd,InstituteofChemistry,TechnicalUniversityofDenmark. tracking colour The polychromy of Greek and Ro...</p>