晚古生代鄂爾多斯盆地沉積—層序充填特征與物質分布規律一、本文概述Overviewofthisarticle《晚古生代鄂爾多斯盆地沉積—層序充填特征與物質分布規律》這篇文章主要探討了中國鄂爾多斯盆地在晚古生代的沉積特征和層序充填模式，以及相應的物質分布規律。鄂爾多斯盆地作為中國重要的沉積盆地之一，其地質歷史和沉積過程對于理解中國的地質演變和資源分布具有重要意義。本文旨在通過對晚古生代鄂爾多斯盆地的沉積序列進行詳細分析，揭示其層序充填特征和物質分布規律，為相關領域的研究提供新的視角和依據。ThisarticlemainlyexploresthesedimentarycharacteristicsandsequencefillingpatternsoftheOrdosBasininChinaduringtheLatePaleozoic,aswellasthecorrespondingmaterialdistributionpatterns.AsoneoftheimportantsedimentarybasinsinChina,thegeologicalhistoryandsedimentaryprocessesoftheOrdosBasinareofgreatsignificanceforunderstandingChina'sgeologicalevolutionandresourcedistribution.ThisarticleaimstoprovideadetailedanalysisofthesedimentarysequenceoftheLatePaleozoicOrdosBasin,revealingitssequencefillingcharacteristicsandmaterialdistributionpatterns,andprovidinganewperspectiveandbasisforresearchinrelatedfields.文章首先介紹了鄂爾多斯盆地的地理位置、地質背景和研究意義，為后續的分析和討論奠定了基礎。接著，文章對晚古生代鄂爾多斯盆地的沉積環境和沉積相進行了詳細闡述，包括沉積相的類型、分布和演化等，為理解沉積序列的形成提供了重要依據。Thearticlefirstintroducesthegeographicallocation,geologicalbackground,andresearchsignificanceoftheOrdosBasin,layingthefoundationforsubsequentanalysisanddiscussion.Furthermore,thearticleprovidesadetailedexplanationofthesedimentaryenvironmentandfaciesoftheLatePaleozoicOrdosBasin,includingthetypes,distribution,andevolutionofsedimentaryfacies,providingimportantbasisforunderstandingtheformationofsedimentarysequences.在層序充填特征方面，文章通過對沉積序列的層序劃分和對比，揭示了鄂爾多斯盆地在晚古生代的層序充填模式和時空變化特征。這些層序充填特征反映了盆地內沉積物的來源、搬運和沉積過程，對于理解盆地的演化歷史和資源分布具有重要意義。Intermsofsequencefillingcharacteristics,thearticlerevealsthesequencefillingpatternsandspatiotemporalvariationcharacteristicsoftheOrdosBasinintheLatePaleozoicbydividingandcomparingsedimentarysequences.Thesesequencefillingcharacteristicsreflectthesource,transport,andsedimentaryprocessesofsedimentsinthebasin,whichisofgreatsignificanceforunderstandingtheevolutionaryhistoryandresourcedistributionofthebasin.在物質分布規律方面，文章通過對鄂爾多斯盆地晚古生代沉積物的化學成分、粒度分布和沉積構造等進行分析，揭示了其物質分布規律和影響因素。這些物質分布規律不僅反映了盆地的沉積環境和沉積過程，也為預測盆地的資源分布和評估資源潛力提供了重要依據。Intermsofmaterialdistributionpatterns,thearticleanalyzesthechemicalcomposition,particlesizedistribution,andsedimentarystructureofLatePaleozoicsedimentsintheOrdosBasin,revealingtheirmaterialdistributionpatternsandinfluencingfactors.Thesematerialdistributionpatternsnotonlyreflectthesedimentaryenvironmentandprocessesofthebasin,butalsoprovideimportantbasisforpredictingtheresourcedistributionandevaluatingresourcepotentialofthebasin.文章總結了晚古生代鄂爾多斯盆地的沉積—層序充填特征與物質分布規律的主要研究成果和認識，并指出了未來研究的方向和重點。通過本文的研究，有助于深入理解鄂爾多斯盆地的地質歷史和沉積過程，為地質學、沉積學和相關領域的研究提供有益的參考和啟示。ThearticlesummarizesthemainresearchresultsandunderstandingofthesedimentarysequencefillingcharacteristicsandmaterialdistributionpatternsoftheLatePaleozoicOrdosBasin,andpointsoutthedirectionandfocusoffutureresearch.Throughthisstudy,itishelpfultogainadeeperunderstandingofthegeologicalhistoryandsedimentaryprocessesoftheOrdosBasin,providingusefulreferencesandinsightsforresearchingeology,sedimentology,andrelatedfields.二、晚古生代鄂爾多斯盆地沉積環境分析AnalysisofSedimentaryEnvironmentintheLatePaleozoicOrdosBasin晚古生代，鄂爾多斯盆地處于華北板塊內部，是一個相對穩定的沉積盆地。盆地內部經歷了海侵、海退以及多次構造運動，形成了豐富的沉積序列和沉積相類型。IntheLatePaleozoic,theOrdosBasinwaslocatedwithintheNorthChinaPlateandwasarelativelystablesedimentarybasin.Theinteriorofthebasinhasundergonemarineinvasion,regression,andmultipletectonicmovements,formingarichsedimentarysequenceandsedimentaryfaciestypes.晚古生代鄂爾多斯盆地的沉積相主要包括河流相、三角洲相、湖泊相和濱海相。河流相沉積主要分布在盆地的邊緣地帶，以砂質沉積為主，反映了當時河流發育、河網密布的特點。三角洲相沉積則位于河流相和湖泊相之間，主要由砂、泥互層組成，反映了河流與湖泊的相互作用。湖泊相沉積主要分布在盆地的中央地帶，以泥巖、頁巖為主，夾有少量砂巖和灰巖，反映了湖泊的廣泛分布和相對穩定的沉積環境。濱海相沉積主要分布在盆地的邊緣，以灰巖、白云巖為主，反映了當時盆地邊緣的海洋環境。ThesedimentaryfaciesoftheLatePaleozoicOrdosBasinmainlyincluderiverfacies,deltafacies,lakefacies,andcoastalfacies.Riverfaciessedimentationismainlydistributedattheedgeofthebasin,mainlycomposedofsandysediment,reflectingthecharacteristicsofriverdevelopmentanddenserivernetworkatthattime.Deltadepositsarelocatedbetweenriverandlakefacies,mainlycomposedofsandandmudinterlayers,reflectingtheinteractionbetweenriversandlakes.Thelacustrinesedimentsaremainlydistributedinthecentralareaofthebasin,mainlycomposedofmudstoneandshale,withasmallamountofsandstoneandlimestoneinterbedded,reflectingthewidespreaddistributionandrelativelystablesedimentaryenvironmentoflakes.Coastalsedimentsaremainlydistributedattheedgeofthebasin,mainlycomposedoflimestoneanddolomite,reflectingthemarineenvironmentattheedgeofthebasinatthattime.晚古生代鄂爾多斯盆地的沉積序列以海侵和海退旋回為主，表現出明顯的周期性變化。在每個海侵旋回中，沉積相從河流相向湖泊相、濱海相轉變，沉積物粒度由粗變細，反映了海平面的上升和盆地內部水體的加深。而在每個海退旋回中，沉積相則從濱海相向湖泊相、河流相轉變，沉積物粒度由細變粗，反映了海平面的下降和盆地內部水體的變淺。這種周期性的海侵海退旋回，構成了盆地晚古生代沉積的基本格架。ThesedimentarysequenceoftheLatePaleozoicOrdosBasinismainlycharacterizedbymarineinvasionandregressioncycles,exhibitingsignificantperiodicchanges.Ineachmarineintrusioncycle,thesedimentaryfaciestransitionfromriverfaciestolakefaciesandcoastalfacies,andthesedimentgrainsizechangesfromcoarsetofine,reflectingtheriseofsealevelandthedeepeningofwaterbodieswithinthebasin.Ineachregressioncycle,thesedimentaryfaciestransitionfromcoastalfaciestolacustrineandfluvialfacies,andthesedimentgrainsizechangesfromfinetocoarse,reflectingthedecreaseinsealevelandtheshallownessofwaterbodieswithinthebasin.ThisperiodiccycleofmarineinvasionandregressionformsthebasicframeworkoftheLatePaleozoicsedimentationinthebasin.晚古生代鄂爾多斯盆地的物質分布規律受到沉積相和沉積序列的共同控制。在河流相和三角洲相地區，砂質沉積物較為豐富，形成了多個砂體群。在湖泊相地區，泥巖、頁巖等細粒沉積物占據主導地位，形成了廣闊的泥巖區。而在濱海相地區，則以灰巖、白云巖等碳酸鹽巖沉積為主，形成了多個碳酸鹽巖臺地。由于晚古生代鄂爾多斯盆地經歷了多次構造運動，使得盆地內部的物質分布也呈現出明顯的分區性和不均勻性。ThematerialdistributionpatternoftheOrdosBasinintheLatePaleozoicisjointlycontrolledbysedimentaryfaciesandsedimentarysequences.Intheareasofriveranddeltafacies,sandysedimentsarerelativelyabundant,formingmultiplesandbodygroups.Inlacustrineareas,fine-grainedsedimentssuchasmudstoneandshaledominate,formingvastareasofmudstone.Incoastalareas,carbonatedepositssuchaslimestoneanddolomitearemainlyformed,formingmultiplecarbonateplatforms.DuetomultipletectonicmovementsintheLatePaleozoicOrdosBasin,thedistributionofmaterialswithinthebasinalsoshowedobviouszoningandnon-uniformity.晚古生代鄂爾多斯盆地的沉積環境具有多樣性和復雜性，其沉積相類型、沉積序列和物質分布規律均受到多種因素的控制和影響。通過對這些沉積特征的分析和研究，可以更加深入地了解盆地的演化歷史和資源分布情況，為后續的油氣勘探和開發提供重要的地質依據。ThesedimentaryenvironmentoftheLatePaleozoicOrdosBasinisdiverseandcomplex,anditssedimentaryfaciestypes,sedimentarysequences,andmaterialdistributionpatternsareallcontrolledandinfluencedbyvariousfactors.Byanalyzingandstudyingthesesedimentarycharacteristics,wecangainadeeperunderstandingoftheevolutionhistoryandresourcedistributionofthebasin,providingimportantgeologicalbasisforsubsequentoilandgasexplorationanddevelopment.三、層序充填特征與層序地層學分析Sequencefillingcharacteristicsandsequencestratigraphyanalysis在晚古生代，鄂爾多斯盆地經歷了復雜的地質演變，其沉積充填特征及其層序地層學特征反映了這一時期的構造活動、氣候變化以及沉積環境的變遷。IntheLatePaleozoic,theOrdosBasinunderwentcomplexgeologicalevolution,anditssedimentaryfillingcharacteristicsandsequencestratigraphyreflectthetectonicactivity,climatechange,andchangesinsedimentaryenvironmentduringthisperiod.晚古生代鄂爾多斯盆地的層序充填具有明顯的不均一性。總體表現為早期沉積較厚，晚期沉積較薄，這反映了盆地在這一時期的沉降速度和沉積速率的變化。早期，盆地沉降速度較快，沉積速率也相對較高，形成了厚層的碎屑巖和碳酸鹽巖沉積。而到了晚期，隨著盆地沉降速度的減緩，沉積速率也相應降低，沉積物以細粒的泥巖和頁巖為主。ThesequencefillingoftheLatePaleozoicOrdosBasinexhibitssignificantheterogeneity.Theoverallperformanceisthattheearlysedimentationisthickerandthelatesedimentationisthinner,whichreflectsthechangesinthesubsidencerateandsedimentationrateofthebasinduringthisperiod.Intheearlystages,thesubsidencerateofthebasinwasrelativelyfast,andthesedimentationratewasalsorelativelyhigh,formingthicklayersofclasticandcarbonaterockdeposits.Inthelatestage,asthesubsidencerateofthebasinslowsdown,thesedimentationratealsocorrespondinglydecreases,andthesedimentismainlyfine-grainedmudstoneandshale.在空間上，盆地不同地區的層序充填特征也存在差異。盆地的邊緣地區，由于靠近物源區，沉積物以粗粒的碎屑巖為主，而盆地中心地區則主要發育細粒的沉積物。這種空間上的差異反映了盆地內部不同地區在晚古生代沉積時期的沉積環境和物質來源的不同。Intermsofspace,therearealsodifferencesinthesequencefillingcharacteristicsindifferentregionsofthebasin.Theedgeareasofthebasin,duetotheirproximitytothesourcearea,aremainlycomposedofcoarse-grainedclasticrocks,whilethecentralareasofthebasinmainlydevelopfine-grainedsediments.ThisspatialdifferencereflectsthedifferentsedimentaryenvironmentsandmaterialsourcesofdifferentregionswithinthebasinduringtheLatePaleozoicsedimentaryperiod.通過層序地層學分析，可以進一步揭示鄂爾多斯盆地晚古生代沉積充填的規律和演化歷程。層序地層學強調沉積層序的等時性，通過對沉積層序的劃分和對比，可以恢復盆地的沉積歷史，揭示盆地的構造活動和氣候變化。Throughsequencestratigraphyanalysis,thelawsandevolutionaryprocessesofsedimentaryfillingintheLatePaleozoicoftheOrdosBasincanbefurtherrevealed.Sequencestratigraphyemphasizestheisochronicityofsedimentarysequences.Bydividingandcomparingsedimentarysequences,thesedimentaryhistoryofthebasincanberestored,andthetectonicactivityandclimatechangeofthebasincanberevealed.在鄂爾多斯盆地，晚古生代的沉積層序可以劃分為若干個三級層序。每個三級層序都包含了一個完整的沉積旋回，從早期的碎屑巖和碳酸鹽巖沉積，到晚期的泥巖和頁巖沉積。這些層序的疊加和組合，形成了盆地晚古生代的沉積充填序列。IntheOrdosBasin,thesedimentarysequenceoftheLatePaleozoiccanbedividedintoseveralthird-ordersequences.Eachtertiarysequencecontainsacompletesedimentarycycle,fromearlyclasticandcarbonatesedimentationtolatemudstoneandshalesedimentation.ThesuperpositionandcombinationofthesesequencesformedthesedimentaryfillingsequenceoftheLatePaleozoicinthebasin.通過對這些層序的詳細分析，可以發現它們之間存在明顯的界面，這些界面往往是構造活動的產物，如斷裂、不整合等。這些界面的存在，不僅反映了盆地構造活動的頻繁和劇烈，也為盆地的油氣勘探提供了重要的標志層。Throughdetailedanalysisofthesesequences,itcanbefoundthatthereareobviousinterfacesbetweenthem,whichareoftenproductsoftectonicactivities,suchasfaults,unconformities,etc.Theexistenceoftheseinterfacesnotonlyreflectsthefrequentandintensetectonicactivitiesinthebasin,butalsoprovidesimportantmarkerlayersforoilandgasexplorationinthebasin.通過對層序內部沉積物的詳細分析，還可以揭示出盆地晚古生代的氣候變化特征。例如，碎屑巖和碳酸鹽巖的沉積往往代表了干旱的氣候條件，而泥巖和頁巖的沉積則可能代表了濕潤的氣候條件。這些氣候變化的信息，對于理解盆地的沉積環境和沉積作用具有重要意義。Bydetailedanalysisofthesedimentswithinthesequence,theclimatechangecharacteristicsofthelatePaleozoicinthebasincanalsoberevealed.Forexample,thesedimentationofclasticandcarbonaterocksoftenrepresentsaridclimaticconditions,whilethesedimentationofmudstoneandshalemayrepresenthumidclimaticconditions.Theseclimatechangeinformationareofgreatsignificanceforunderstandingthesedimentaryenvironmentandprocessesofbasins.晚古生代鄂爾多斯盆地的沉積充填特征與層序地層學分析為我們揭示了這一時期的盆地演化歷程和沉積環境變遷。這些研究成果不僅有助于我們深入理解盆地的地質歷史，也為盆地的油氣勘探和開發提供了重要的科學依據。ThesedimentaryfillingcharacteristicsandsequencestratigraphyanalysisoftheLatePaleozoicOrdosBasinrevealthebasinevolutionprocessandsedimentaryenvironmentchangesduringthisperiod.Theseresearchresultsnotonlyhelpustodeeplyunderstandthegeologicalhistoryofthebasin,butalsoprovideimportantscientificbasisforoilandgasexplorationanddevelopmentinthebasin.四、物質分布規律研究ResearchontheDistributionLawofMatter在晚古生代，鄂爾多斯盆地的物質分布規律受到多種因素的控制，包括古氣候、古地理、構造活動以及沉積物源等。通過對盆地內各沉積相帶的研究，我們可以揭示出這一時期的物質分布規律。IntheLatePaleozoic,thedistributionpatternofmaterialsintheOrdosBasinwascontrolledbyvariousfactors,includingpaleoclimate,paleogeography,tectonicactivity,andsedimentsources.Bystudyingthesedimentaryfacieszoneswithinthebasin,wecanrevealthedistributionpatternsofmaterialsduringthisperiod.從沉積相帶的分布來看，鄂爾多斯盆地晚古生代的沉積體系主要由河流相、三角洲相、湖泊相以及濱海相構成。這些相帶的分布規律與古氣候和古地理條件密切相關。在盆地邊緣地區，由于靠近物源區，主要發育河流相和三角洲相沉積，其中河流相沉積以砂質和礫質為主，反映了較為干燥的氣候條件；而三角洲相沉積則主要由細粒沉積物組成，表明在盆地邊緣地區存在一定的水體。Fromthedistributionofsedimentaryfaciesbelts,thesedimentarysystemoftheLatePaleozoicintheOrdosBasinismainlycomposedofriverfacies,deltafacies,lakefacies,andcoastalfacies.Thedistributionpatternsofthesefacieszonesarecloselyrelatedtoancientclimateandgeographicalconditions.Attheedgeofthebasin,duetoitsproximitytothesourcearea,riveranddeltafaciessedimentsaremainlydeveloped,amongwhichriverfaciessedimentsaremainlysandyandgravelly,reflectingrelativelydryclimaticconditions;Thedeltadepositsaremainlycomposedoffine-grainedsediments,indicatingthepresenceofcertainwaterbodiesinthebasinedgeareas.在盆地內部，隨著距物源區距離的增加，沉積相帶逐漸過渡為湖泊相和濱海相。湖泊相沉積以泥質和碳酸鹽巖為主，反映了較為濕潤的氣候條件；而濱海相沉積則主要由砂巖、泥巖和碳酸鹽巖組成，表明盆地內部存在一定的水體交換。Withinthebasin,asthedistancefromthesourceareaincreases,thesedimentaryfaciesgraduallytransitionintolacustrineandcoastalfacies.Thelacustrinesedimentsaremainlycomposedofmudandcarbonaterocks,reflectingrelativelyhumidclimaticconditions;Thecoastalsedimentsaremainlycomposedofsandstone,mudstone,andcarbonaterocks,indicatingtheexistenceofcertainwaterexchangewithinthebasin.從構造活動的角度來看，鄂爾多斯盆地晚古生代的構造活動對物質分布規律產生了重要影響。盆地內的隆起和坳陷等構造格局控制了沉積物的分布和沉積相帶的展布。在隆起區，由于地勢較高，沉積物相對較薄，主要以河流相和三角洲相沉積為主；而在坳陷區，由于地勢較低，沉積物相對較厚，主要以湖泊相和濱海相沉積為主。Fromtheperspectiveoftectonicactivity,theLatePaleozoictectonicactivityintheOrdosBasinhadasignificantimpactonthedistributionpatternsofmaterials.Thestructuralpatternsofupliftsanddepressionswithinthebasincontrolthedistributionofsedimentsandthedistributionofsedimentaryfacieszones.Intheupliftedarea,duetothehighterrain,thesedimentisrelativelythin,mainlycomposedoffluvialanddeltasediments;Inthedepressionarea,duetothelowerterrain,thesedimentisrelativelythick,mainlycomposedoflacustrineandcoastalsediments.從沉積物源的角度來看，鄂爾多斯盆地晚古生代的沉積物主要來自于周邊的高地和山區。這些高地和山區在風化和侵蝕作用下形成了大量的碎屑物質，通過河流和風力等作用搬運至盆地內部進行沉積。因此，盆地內的物質分布規律與沉積物源的分布和搬運路徑密切相關。Fromtheperspectiveofsedimentsources,theLatePaleozoicsedimentsintheOrdosBasinmainlycamefromthesurroundinghighlandsandmountainousareas.Thesehighlandsandmountainousareashaveformedalargeamountofdebrisunderweatheringanderosion,whichistransportedtotheinteriorofthebasinforsedimentationthroughriversandwindforces.Therefore,thedistributionpatternofsubstancesinthebasiniscloselyrelatedtothedistributionandtransportpathwaysofsedimentsources.鄂爾多斯盆地晚古生代的物質分布規律受到多種因素的控制和影響。通過對盆地內各沉積相帶、構造格局以及沉積物源的研究，我們可以更深入地了解這一時期的物質分布規律和沉積過程。這些研究對于認識盆地的形成演化歷史以及油氣等資源的勘探開發具有重要意義。ThedistributionpatternofmaterialsintheLatePaleozoicoftheOrdosBasiniscontrolledandinfluencedbyvariousfactors.Bystudyingthesedimentaryfacieszones,structuralpatterns,andsedimentsourceswithinthebasin,wecangainadeeperunderstandingofthematerialdistributionpatternsandsedimentaryprocessesduringthisperiod.Thesestudiesareofgreatsignificanceforunderstandingtheformationandevolutionhistoryofbasins,aswellasfortheexplorationanddevelopmentofoilandgasresources.五、沉積—層序充填與盆地演化關系Sedimentarysequencefillingandbasinevolutionrelationship晚古生代鄂爾多斯盆地的沉積-層序充填特征，與其地質演化歷程緊密相連，共同塑造了盆地的現今面貌。沉積序列的演變不僅記錄了盆地構造運動的節奏，也反映了古地理、古氣候和古海洋環境的變遷。ThesedimentarysequencefillingcharacteristicsoftheLatePaleozoicOrdosBasinarecloselyrelatedtoitsgeologicalevolution,jointlyshapingthecurrentappearanceofthebasin.Theevolutionofsedimentarysequencesnotonlyrecordstherhythmofbasintectonicmovement,butalsoreflectsthechangesinpaleogeography,paleoclimate,andpaleomarineenvironment.在盆地演化的初期，鄂爾多斯盆地可能處于一個相對穩定的克拉通環境，沉積物以碎屑巖和碳酸鹽巖為主，形成了早期的層序充填。隨著地殼的進一步沉降和海平面的上升，盆地逐漸轉變為一個淺海環境，沉積了豐富的海相地層，如頁巖、灰巖等。這些地層的形成標志著盆地演化進入了一個新的階段。Intheearlystagesofbasinevolution,theOrdosBasinmayhavebeeninarelativelystablecratonicenvironment,withsedimentsmainlycomposedofclasticandcarbonaterocks,formingearlysequencefilling.Withfurthersubsidenceofthecrustandrisingsealevels,thebasingraduallytransformedintoashallowmarineenvironment,depositingrichmarinestratasuchasshaleandlimestone.Theformationofthesestratamarksanewstageinbasinevolution.隨后，隨著地殼的升降運動和海平面的波動，盆地經歷了多次的海侵和海退事件，導致了沉積地層的周期性變化。這些變化不僅體現在地層的厚度和巖性上，也反映在沉積相帶的遷移和生物群落的演替上。例如，在海侵期，盆地邊緣地區可能發育了廣泛的碳酸鹽巖沉積，而在海退期，盆地內部則可能以碎屑巖沉積為主。Subsequently,withtheriseandfalloftheEarth'scrustandfluctuationsinsealevels,thebasinexperiencedmultiplemarineinvasionsandregressions,leadingtoperiodicchangesinsedimentarystrata.Thesechangesarenotonlyreflectedinthethicknessandlithologyofthestrata,butalsointhemigrationofsedimentaryfacieszonesandthesuccessionofbiologicalcommunities.Forexample,duringtheperiodofmarineinvasion,extensivecarbonatedepositsmayhavedevelopedintheedgeareasofthebasin,whileduringtheperiodofmarineregression,theinteriorofthebasinmaybedominatedbyclasticdeposits.晚古生代的氣候變化也對盆地的沉積-層序充填產生了重要影響。例如，在冰期時，全球海平面下降，盆地可能遭受剝蝕，形成了不整合面；而在間冰期時，全球海平面上升，盆地則接受了新的沉積。這種氣候變化導致的沉積響應，在鄂爾多斯盆地的地層記錄中得到了明顯的體現。TheclimatechangeintheLatePaleozoicalsohadasignificantimpactonthesedimentarysequencefillingofthebasin.Forexample,duringaniceage,globalsealevelsmaydropandbasinsmayexperienceerosion,formingunconformitysurfaces;Duringtheinterglacialperiod,globalsealevelsriseandbasinsreceivenewsedimentation.ThesedimentaryresponsecausedbyclimatechangeisclearlyreflectedinthestratigraphicrecordsoftheOrdosBasin.晚古生代鄂爾多斯盆地的沉積-層序充填特征與盆地演化之間存在著密切的關系。通過對這些沉積特征的研究，我們可以更好地理解盆地的地質歷史，揭示其演化的內在機制和動力來源。這對于認識盆地的油氣資源分布、預測未來的地質變化以及評估環境風險等方面都具有重要的科學意義和實用價值。ThereisacloserelationshipbetweenthesedimentarysequencefillingcharacteristicsandbasinevolutionintheLatePaleozoicOrdosBasin.Bystudyingthesesedimentarycharacteristics,wecanbetterunderstandthegeologicalhistoryofthebasin,revealtheunderlyingmechanismsanddynamicsourcesofitsevolution.Thishasimportantscientificsignificanceandpracticalvalueforunderstandingthedistributionofoilandgasresourcesinthebasin,predictingfuturegeologicalchanges,andassessingenvironmentalrisks.六、結論與展望ConclusionandOutlook通過對晚古生代鄂爾多斯盆地的沉積—層序充填特征與物質分布規律的研究，本文得出了以下幾點主要ThroughthestudyofsedimentarysequencefillingcharacteristicsandmaterialdistributionpatternsintheLatePaleozoicOrdosBasin,thisarticlehasdrawnthefollowingmainpoints:晚古生代鄂爾多斯盆地的沉積層序呈現出明顯的旋回性，與區域構造活動密切相關。盆地內部充填序列的時空分布表現出從西向東、從南向北逐漸變化的趨勢，反映了盆地邊緣與中心地帶沉積環境的差異性。ThesedimentarysequenceoftheLatePaleozoicOrdosBasinexhibitsobviouscyclicity,closelyrelatedtoregionaltectonicactivity.Thespatiotemporaldistributionofthefillingsequenceinsidethebasinshowsagraduallychangingtrendfromwesttoeastandfromsouthtonorth,reflectingthedifferencesinsedimentaryenvironmentsbetweentheedgeandcenterofthebasin.物質分布規律方面，盆地內部不同層序中沉積物的粒度、成分和厚度均表現出明顯的變化。粗粒沉積物主要集中在盆地邊緣，而細粒沉積物則主要充填在盆地中心。這種分布模式與盆地的沉降速率、物源供應以及水體深度等因素密切相關。Intermsofmaterialdistributionpatterns,thegrainsize,composition,andthicknessofsedimentsindifferentsequenceswithinthebasinshowsignificantchanges.Coarsesedimentismainlyconcentratedattheedgeofthe