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-sectio

2、n,ashiftingofallfaciestowardsthecenterofabasin.Notethatthisisalateralshiftinfacies,suchthatinverticalsuccession,abasinwardshiftinfaciesischaracterizedbyashifttoshallowfacies(andnotaverticalshifttomorebasinwardordeeper-waterfacies).
wPX^P t,n2N13 Bed.Layero

3、fsedimentaryrocksorsedimentsboundedaboveandbelowbybeddingsurfaces.Beddingsurfacesareproducedduringperiodsofnondepositionorabruptchangesindepositionalconditions,includingerosion.Beddingsurfacesaresynchronouswhentracedlaterally;therefore,bedsaretime-stratigraphicun

4、its.SeeCampbell,1967(Sedimentology8:7-26)formoreinformation.mMvAA; `8r$b/6 Bedset.Twoormoresuperposedbedscharacterizedbythesamecomposition,texture,andsedimentarystructures.Thus,abedsetformstherecordofdepositioninanenvironmentcharacterizedbyacertainsetofdep

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

6、aphiccondensationcanoccurnotonlythroughacessationinthesupplyofsedimentatthesiteofaccumulation,butalsoincaseswherethesupplyofsedimenttoasiteisbalancedbytherateofremovalofsedimentfromthatsite.Wherenetsedimentaccumulationratesareslow,avarietyofunusualsedimentologicf

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

8、Y~P ;l1.

9、jQh Conformity.Beddingsurfaceseparatingyoungerfromolderstrata,alongwhichthereisnoevidenceofsubaerialorsubmarineerosionornondepositionandalongwhichthereisnoev