层序地层学的名词英语解释

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1、层序地层学的名词英语解释0Glossary"ql$Rz8 Accommodation.Anothertermforrelativesea-level.Canbethoughtofasthespaceinwhichsedimentscanfill,definedatitsbasebythetopofthelithosphereandatitstopbytheoceansurface.lMl'+yy 18Vn[}]" BasinwardShiftinFacies.Whenviewedincross-section,ashif

2、tingofallfaciestowardsthecenterofabasin.Notethatthisisalateralshiftinfacies,suchthatinverticalsuccession,abasinwardshiftinfaciesischaracterizedbyashifttoshallowfacies(andnotaverticalshifttomorebasinwardordeeper-waterfacies).
wPX^P t,n2N13 Bed.Layerofsedimentaryro

3、cksorsedimentsboundedaboveandbelowbybeddingsurfaces.Beddingsurfacesareproducedduringperiodsofnondepositionorabruptchangesindepositionalconditions,includingerosion.Beddingsurfacesaresynchronouswhentracedlaterally;therefore,bedsaretime-stratigraphicunits.SeeCampbell,1967(

4、Sedimentology8:7-26)formoreinformation.mMvAA; `8r$b/6 Bedset.Twoormoresuperposedbedscharacterizedbythesamecomposition,texture,andsedimentarystructures.Thus,abedsetformstherecordofdepositioninanenvironmentcharacterizedbyacertainsetofdepositionalprocesses.Inthisway

5、,bedsetsarewhatdefinesedimentaryfacies.EquivalenttoMcKeeandWeir'scoset,asappliedtocross-stratification.SeeCampbell,1967(Sedimentology8:7-26)formoreinformation.&6vWz6!P 8A5/jqnqt Condensation.Slownetratesofsedimentaccumulation.Stratigraphiccondensationcanoccurnotonlythr

6、oughacessationinthesupplyofsedimentatthesiteofaccumulation,butalsoincaseswherethesupplyofsedimenttoasiteisbalancedbytherateofremovalofsedimentfromthatsite.Wherenetsedimentaccumulationratesareslow,avarietyofunusualsedimentologicfeaturesmayform,includingburrowedhorizons,a

7、ccumulationsofshells,authigenicminerals(suchasphosphate,pyrite,siderite,glauconite,etc.),earlycementationandhardgrounds,andenrichmentinnormallyraresedimentarycomponents,suchasvolcanicashandmicrometeorites.8#

8、Y~P ;l1.jQh Conformity.Beddingsurfaceseparatingyoungerf

9、romolderstrata,alongwhichthereisnoevidenceofsubaerialorsubmarineerosionornondepositionandalongwhichthereisnoev