U‐Pb_ReduxDemo(fromEARTHTIMEIVmeeting)Settingup

Downloadtoyourdesktopandunzipthetwofoldersavailableathttp://cirdles.cs.cofc.edu/blog/?page_id=21.

Eachfoldercontainsthreesub‐folders:

• The“data”subfoldercontainstherawdatafilesintheMassLynx.xlsformat.Toseetherawdata,gotothe“CYCLE”worksheetinanyofthe.xlsfiles.

• The“Tripoli”subfoldercontainsTripoliworkfilesforeachUandPbanalysis,recordingwhichratiosareusedinthemeasuredratiostatistics

• The“Redux”subfoldercontainsafolderforeachaliquotinthesample.Thezirconaliquotfolderhasthe.xmlfileswiththeexportedstatisticsforeachPborUanalysis.

Tripoli

OpenTripolibydouble‐clickingontheTripoliicon.

IntheDataFilemenu,choosethefirstoption:“ReadMassLynxExcelDataFile”.

Navigateto“Desktop\CM2\CM2Data”andselectCM2_z15_Pb.xls.

Clickthe“GRAPHSelected”buttononthebottomrightoftheTripoliwindowtoseethecycledataforthisanalysis.Removethefirsttwoblocksofthe206/204,207/204,208/204,and204/205ratios,sincetheyhavebeenaffectedbyanearlyelevatedbaseline.Todothis,right‐clickanywhereintheblock(delineatedbyverticallines)thatyou’dliketoexcludefromthemeanstatistics.Excludedratiosdisplayasredpoints;originalstatisticsareinblueontheleftofeachratio’swindow,andupdatedstatisticsaredisplayedinblackattheright:

CheckifasetofratiomeasurementshasanyoutliersbyemployingChauvenet’sCriterion.Atthelowerrightofoneoftheratiowindows,clicktheratiobuttonnexttoChauvenet.

Closethegraphwindow,thensaveyourworkbygoingtotheTripoliFilemenuitemandclicking“SaveAsTripoliWorkFile.”

Navigateuponelevel(thesmalliconwiththeuparrowatthetopofthewindow),thenchoosethefolder“CM2Tripoli”andsavetheworkfilethere.

ExportyourreduceddatainarobustformatthatReduxcanimport.Clickthe“ExportSavedWork”menuitemandchoose“ExportCheckedRatiostoU‐Pb_ReduxImportFractionFile.”Choosethedefaultsampleandaliquotnames.

Inthesavedialog,navigateuponelevel,choosethe“CM2Redux”folder,thenthe“zircon”subfolderandsavethe.xmlfilethere.

Next,openaUdatafilebygoingbacktotheDataFilemenuandclickingon“ReadMassLynxExcelDataFile.”Navigateuponelevel,selecttheCM2Datafolder,andloadin“CM2_z15_U.xls”.Tripoliwillreadin270/267and265/267U‐oxideratiosandperformoxidecorrection,displayingtheresultsinblue:

Inspectthecycledatabypressingthe“GRAPHSelected”button,thenclosethegraphwindowandchoose“SaveAsTripoliWorkFile”fromtheTripoliFilemenu.

Navigateuponelevel,choosethe“CM2Tripoli”folder,andsavetheTripolifilethere.Exportthesaveddatabyclickingthe“ExportSavedWork”menuandexportingthe.xmlfiletotheCM2Redux\zirconfolder.

ExitTripolibyclosingitswindow.

U­Pb_Redux–Importing.xmlfiles

Inthe“U‐PbSampleFiles”menu,choose“NewAnalysisSampleFileFrom…”“ID‐TIMSTripoli‐preparedXMLfiles”.You’llgetawindowthatlookslikethis:

Keepthe“ChooseDataUpdateMode”radiobuttonon“AutomatedDataUpdate”andclick“OK”atthebottomofthewindow.Atthepromptfora“ReduxSampleFractionsFolder”,gotothedesktop,opentheCM2folder,andclickonceonthe“CM2Redux”folder.Hit“Choose”atthebottomofthewindow.Savethenew.reduxfiletothedesktop,andkeepthedefaultname(CM2.redux).

ThemeasureddatahasnowbeenloadedintoRedux.GototheLabDatamenuitemintheReduxwindowandexplorethetabs,whichcontrolinputmodels.

ToimporttheET535tracer,navigatetotheTracertabofthiswindowandselectthe“Tracers”menuitem.Select“ImportTracerfromEarth‐Time.org,”choose“ET535v.2.xml”inthedialogbox,thenhitOK.ExitLabDatabyclickingtheclosebuttonatthetoprightofthewindoworclickingthelargeOKbuttonatthebottomofthewindow.

Openthealiquotwindowbyclickingonthebuttonlabeled“zircon”atthetopleftoftheReduxwindow.Thisistheplacetoenterallinputvalues,models,anduncertainties.

Reductionparameterswillbefilledwiththeintendedvalueswhenyouopenapre‐made.reduxfileshortly.Exitthisscreenbyclickingthe“Save&Close”windowatthebottomleftofthealiquotwindow.

Openapre‐savedReduxfilewiththesamedata.Inthe“U‐PbSampleFile”menu,choosethe“OpenSampleFile”option.Navigatetothedesktop,openthefolder“CM2”,thenthesubfolder“CM2Redux”.Doubleclick“CM2_11‐2‐09.redux”toopenthereduceddatafile.

Examinethefilleddatatable,thenclickthe“Reports”menuitemandchoose“EditCurrentReportSettings”tocustomizethedatatablesetup.Thesetupwindowisshownatleft.Exitthesettingswindowbyclickingthe“Close”buttonatthebottomofthewindow.

Redux–DateInterpretations

Clickthe“SampleDateInterpretations”buttonatthebottomrightoftheReduxwindowtobringuptheDateInterpretationswindow.Youcanpan,zoom,anduseavarietyoftoolstochangetheconcordiaplotappearance.

IntheConcordiaPlotOptionsmenuatthetopofthewindow,click“Sample”toseehowyoucancustomizetheplotappearance,and“Aliquot”toseehowtocustomizedisplaysettingsforeachaliquot.

Next,takeaweightedmeanofthealiquot.InthepanelontheleftoftheInterpretationswindow,double‐clickonthefolderlabeledCM2todisplayalistofitsaliquots—here,only“zircon”.Right‐clickontheword“zircon”tocreateanewdateinterpretation.Choosethe“weightedmean207/206date”option,likeatleft,andclickOK.

Clicktheplussignnexttothenew“Fractions”foldertoseealistofallthefractionsinthealiquot.Right‐clickthefolderandchoose“SelectAllFractions”toaddthemalltotheweightedmean.

Anewtextboxappearsintheconcordiawindow.Dragittothelowerrightoftheconcordiaplot,outofthewayoftheellipses.Togglethecheck‐boxesonthelefttoincludeorexcludefractionsfromtheweightedmean.Theweightedmeanstatisticschangeinrealtime.

Next,displaytheweightedmeanplotfortheweightedmean207/206date.Clickthe“WeightedMeansChooser”menuatthetopofthescreen.Aboxishighlightedunderneaththecolumn“207Pb/206Pb”.Clicktheboxtocheckit,thenclickok.

Beneaththeconcordiawindow,clickthetablabeled“WeightedMeans”.

Explorethedisplayandorderingoptionsfortheweightedmeanplot.Checkandun‐checkfractionsattheleftofthewindowtoincludeorexcludethemfromtheweightedmeans,andwatchthestatisticschangeinrealtime.

ClosetheDateInterpretationswindowwiththeclosebuttonatthebottomleftofthewindow.Allworkissaved,andwillreappearwhenyoure‐openthewindow.

U­PbRedux–FractionInspectionandVisualization.

InthemainReduxwindow,clickthebuttonlabeled‘z2’atthetopofthewindow.Thiswasthefractionwiththeoldest207Pb/206Pbdate.

ExaminetheKwikiwindow.Clickondifferentbarsinthevariancebreakdowngraphstodisplaytheirnameandcontribution.Clickanddragsliderstomovetheellipseonconcordiaandchangetheoutputs.Youcanaddintracer(+Tr)ordecayconstant(+L[ambda])uncertaintiesforthisfractionatthebottomleftofthescreen,aswellasimplementingTh‐andPa‐correctionbycheckingtheirboxes.Toresetasingleslider,left‐clickitonce.Toresetallsliders,pressthe“ResetAllSliders”buttonatthetopofthesliderbank.

Totogglebetweenvariancecontributionsinthebarcharts,left‐clickinthecolumnaboveeachbar.Correlatedinputsaredisplayedtogether,withthecontributionfromtheircovariancedisplayedaboveorbelowtheaxisifit’spositiveornegative.

ClosetheKwikiwindowbypressingthe“Save&Close”or“Close”buttonsonthebottomofthewindow.Noneoftheinputvaluesoruncertaintieschangedwithslidersissaved.

Savethedata,reductionparameters,anddateinterpretationsforthisaliquot.Clickthebuttonlabeled“zircon”atthetopleftofthescreen,andclickthe“SaveandExportAliquot”buttonatthebottomrightofthewindow.Namethealiquot“CM2.xml”andsaveittotheDesktop.

OtherWaystoBringDataIntoRedux

Thefollowingwillbepresentedontheprojectedscreen:Typingmeasureddatainbyhand(withoutTripoli);typingreduceddatainbyhand(LegacyMode),forinstancefromapublisheddatatable.ImportingdatafromtheGeoChrondatabasewillbedemonstratedaspartofthenextexercise.

Redux–CompilationMode

Compilationmodecompilesmeasureddata,reductionparameters,anddateinterpretationsfrommultiplesamplesforinterpretationtogether.

IntheReduxmainwindow,gotothe“U‐PbSampleFile”menuitemandchoose“NewCompilationofAliquotsintoaSuper‐SampleFile”.Inthenewwindow,enterthenameforthisfileas“CMCompilation”,leavetheradiobuttonfor“SourceofAliquots”on“SingleLocalAliquot”andclick“OK”.

Navigatetothedesktopanddouble‐clicktheCM2.xmlfileyouexportedearlier.Whenprompted,savethecompilationfileonthedesktopas“CMCompilation.redux”.

AllofthesavedCM2datahasbeenbroughtin.Importanotheraliquotbyclickingthe“U‐PbSampleFile”menuandchoosingthe“ManageSampleModel”option.Leavetheradiobuttonon“SingleLocalAliquot”andclickOK.NavigatetothedesktopandchooseCM1.xml.Goto“ManageSampleModel”againanddothesamefor“CM_Legacy.xml”.

Goto“ManageSampleModel”onemoretime,andthistimechoosethe“ImportSingleAliquotfromGeochronDatabase”option.ClickOK.Inthepromptforthe“aliquotchildIGSN”,enter“NMM000007”(fivezeros)andpressOK.

Scrolltothebottomofthedatatabletoconfirmthatitimportedsuccessfully.

ClicktheSampleDateInterpretationswindowtoseeallofthesamplesplottedtogether.NoticethatthealiquotdateinterpretationssavedinCM2.xmlhavebeenimportedaswell.

Right‐clickthenewaliquotCM3ontheleftpanel,andaddthe206/238weightedmeandate.Right‐clickthefractionsfolderandchoose“Selectall”toaddallthefractionstotheweightedmean.

DothesameforCM2—addthe206/238weightedmeandataandaddallfractions.Clicktheweightedmeanschooserinthemenuatthetopofthewindow,andselecttheboxesunderneath206Pb/238UfortherowsCM2andCM3.ClickOK.

Clicktheweightedmeanstabbeneaththeconcordiaplottoshowtheweightedmeanplotsforbothandcomparethetwo.