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1、ELSEVIERSedimentaryGeology128(1999)171±178TechnicalNotePreparationofpolishedthinsectionsfrompoorlyconsolidatedregolithandsedimentmaterialsKayleneS.Camuti,PhillipT.McGuire1SchoolofEarthSciences,JamesCookUniversity,Townsville,QLD.4810,AustraliaReceived24November19
2、98;accepted5May1999AbstractGoodqualitypolishedthinsectionscanbepreparedfrompoorlyconsolidated,wet,fragileandfriableregolithandsedimentmaterialsinastandardearthsciencethinsectionlaboratory,withonlyminoradditionalequipment.Materialsaredriedoveranacetonebath,impregn
3、atedwithapolyesterresinmix,andcutandpolishedusingminormodi®cationsofstandardhardrockthinsectioningequipmentandtechniques.Thesectionsproducedaresuitableforbothopticalandelectronmicroscopy,andelectronprobemicroanalysis.Ó1999ElsevierScienceB.V.Allrightsreserved.Keyw
4、ords:regolith;impregnation;thinsections1.Introductionfrompoorlyconsolidated,clay-richregolithmate-rialsandfromrecentoceansediments.ThispaperThinsectioningandpolishingfacilitieswithintheoutlinestheproblemsencounteredinpreparingtheseSchoolofEarthSciencesatJamesCook
5、Univer-materialsandtheproceduresdevelopedtoovercomesitywereoriginallydesignedtoproducepolishedthem.Theseproceduresarebaseduponstandardthinsectionsfromconsolidatedrocks.However,overtechniquesusedbysomesoilmicromorphologiststhelastfewyears,researchprojectswithinthe
6、de-(e.g.Murphy,1986)whichwehavesimpli®edtopartmenthavediversi®edintonon-traditionalareas,minimisecostsandtheneedforspecialisedequip-creatingademandforthinsectionsproducedfrommentandpersonnel.awidevarietyofmaterials.Asaconsequence,fa-Mostoftheequipmentrequiredwill
7、beavailablecilitiesandtechniqueshavebeenslightlymodi®edinawell-equippedgeologicalthinsectioninglabora-tocopewiththeproblemspresentedbythesemate-tory;additionalandessentialrequirementsare:accessrials,withtheobjectiveofproducinggoodqualitytoafumehoodandavacuumchamb
8、er,protectivepolishedthinsectionsthatcanbeusedforopticalclothing,well-ventilatedworkingareas,andsafetyandelectronmicroscopeobservations.Ofparticulardatafortheh
