二連盆地侏羅紀-白堊紀原型盆地恢復(fù)

二連盆地侏羅紀—白堊紀原型盆地恢復(fù)一、本文概述Overviewofthisarticle本文旨在深入探討二連盆地自侏羅紀至白堊紀期間的原型盆地恢復(fù)問題。二連盆地作為中國北部的一個重要沉積盆地，其地質(zhì)歷史復(fù)雜且豐富，對于理解中國乃至全球在這一時期的地質(zhì)演化過程具有重要意義。通過詳細分析二連盆地的地質(zhì)結(jié)構(gòu)、沉積序列、構(gòu)造演化等方面，本文將試圖重建該盆地自侏羅紀至白堊紀的原型盆地，為深化我們對這一關(guān)鍵地質(zhì)時期的認知提供新的視角和依據(jù)。ThisarticleaimstoexploreindepththerestorationoftheprototypebasinintheErlianBasinfromtheJurassictotheCretaceousperiod.AsanimportantsedimentarybasininnorthernChina,theErlianBasinhasacomplexandrichgeologicalhistory,whichisofgreatsignificanceforunderstandingthegeologicalevolutionprocessofChinaandeventheworldduringthisperiod.Throughadetailedanalysisofthegeologicalstructure,sedimentarysequence,andtectonicevolutionoftheErlianBasin,thisarticlewillattempttoreconstructtheprototypebasinofthebasinfromtheJurassictotheCretaceous,providinganewperspectiveandbasisfordeepeningourunderstandingofthiscriticalgeologicalperiod.在具體研究過程中，我們將綜合運用地質(zhì)學(xué)、地球物理學(xué)、地球化學(xué)等多學(xué)科的理論和方法，對二連盆地的沉積特征、構(gòu)造樣式、盆地邊界、基底結(jié)構(gòu)等進行深入剖析。我們還將參考前人的研究成果，結(jié)合最新的地質(zhì)調(diào)查資料和數(shù)據(jù)分析，嘗試提出更加合理和可靠的原型盆地恢復(fù)模型。Inthespecificresearchprocess,wewillcomprehensivelyapplytheoriesandmethodsfrommultipledisciplinessuchasgeology,geophysics,andgeochemistrytodeeplyanalyzethesedimentarycharacteristics,structuralstyles,basinboundaries,andbasementstructuresoftheErlianBasin.Wewillalsorefertopreviousresearchresults,combinethelatestgeologicalsurveydataanddataanalysis,andattempttoproposeamorereasonableandreliableprototypebasinrestorationmodel.本文的研究不僅有助于深化我們對二連盆地自身地質(zhì)演化的理解，同時也能夠為類似盆地的研究提供有益的參考和借鑒。我們相信，隨著對二連盆地原型盆地恢復(fù)研究的不斷深入，我們將會對這一重要地質(zhì)時期的地殼運動、沉積作用、資源分布等方面有更加全面和深入的認識。TheresearchinthisarticlenotonlyhelpstodeepenourunderstandingofthegeologicalevolutionoftheErlianBasinitself,butalsoprovidesusefulreferenceandinspirationforthestudyofsimilarbasins.WebelievethatwiththecontinuousdeepeningofresearchontherestorationoftheprototypebasinoftheErlianBasin,wewillhaveamorecomprehensiveandin-depthunderstandingofthecrustalmovement,sedimentation,resourcedistribution,andotheraspectsofthisimportantgeologicalperiod.二、二連盆地地質(zhì)背景GeologicalbackgroundofErlianBasin二連盆地位于中國北部，是一個典型的陸相沉積盆地，其地質(zhì)歷史可以追溯到侏羅紀至白堊紀時期。這一地質(zhì)時期，盆地經(jīng)歷了多期的構(gòu)造運動和沉積作用，形成了豐富的地質(zhì)記錄和多樣的沉積相。TheErlianBasinislocatedinnorthernChinaandisatypicalterrestrialsedimentarybasin.ItsgeologicalhistorycanbetracedbacktotheJurassictoCretaceousperiod.Duringthisgeologicalperiod,thebasinunderwentmultipleperiodsoftectonicmovementandsedimentation,formingrichgeologicalrecordsanddiversesedimentaryfacies.侏羅紀時期，二連盆地開始形成，主要受到華北板塊與西伯利亞板塊之間的相互作用影響。這一時期，盆地內(nèi)發(fā)生了多次火山噴發(fā)和巖漿活動，形成了大量的火山巖和侵入巖。同時，伴隨著構(gòu)造運動的加劇，盆地邊緣開始發(fā)育沖積扇和河流沉積體系，形成了豐富的砂礫巖和泥巖沉積。DuringtheJurassicperiod,theErlianBasinbegantoform,mainlyinfluencedbytheinteractionbetweentheNorthChinaPlateandtheSiberianPlate.Duringthisperiod,multiplevolcaniceruptionsandmagmaticactivitiesoccurredinthebasin,formingalargeamountofvolcanicandintrusiverocks.Atthesametime,withtheintensificationoftectonicmovements,alluvialfansandriversedimentarysystemsbegantodevelopattheedgeofthebasin,formingabundantsand,gravel,andmudstonedeposits.進入白堊紀，二連盆地的構(gòu)造格局和沉積環(huán)境發(fā)生了顯著變化。隨著板塊運動的進一步演化，盆地內(nèi)部逐漸形成了湖泊和沼澤等沉積環(huán)境，沉積了大量的泥巖、頁巖和油頁巖等細粒沉積物。這些沉積物不僅記錄了當(dāng)時的氣候和環(huán)境信息，還為后續(xù)的油氣生成和聚集提供了良好的條件。EnteringtheCretaceousperiod,thestructuralpatternandsedimentaryenvironmentoftheErlianBasinunderwentsignificantchanges.Withthefurtherevolutionofplatemovement,sedimentaryenvironmentssuchaslakesandswampsgraduallyformedwithinthebasin,depositingalargeamountoffine-grainedsedimentssuchasmudstone,shale,andoilshale.Thesesedimentsnotonlyrecordedtheclimateandenvironmentalinformationatthattime,butalsoprovidedfavorableconditionsforsubsequentoilandgasgenerationandaccumulation.二連盆地在這一時期還發(fā)育了多套生油層和儲油層，主要包括侏羅系和白堊系的砂巖、頁巖和碳酸鹽巖等。這些儲層具有良好的物性和含油性，是二連盆地油氣勘探和開發(fā)的重要目標。Duringthisperiod,theErlianBasinalsodevelopedmultiplesetsofsourceandreservoirlayers,mainlyincludingsandstone,shale,andcarbonaterocksoftheJurassicandCretaceous.Thesereservoirshavegoodphysicalandoil-bearingpropertiesandareimportanttargetsforoilandgasexplorationanddevelopmentintheErlianBasin.二連盆地在侏羅紀至白堊紀時期經(jīng)歷了復(fù)雜的地質(zhì)演化和沉積過程，形成了豐富的地質(zhì)記錄和多樣的沉積相。這些地質(zhì)背景信息對于理解盆地的構(gòu)造演化、沉積環(huán)境和油氣成藏規(guī)律具有重要意義，為后續(xù)的油氣勘探和開發(fā)提供了重要的參考依據(jù)。TheErlianBasinunderwentcomplexgeologicalevolutionandsedimentaryprocessesfromtheJurassictotheCretaceous,formingrichgeologicalrecordsanddiversesedimentaryfacies.Thesegeologicalbackgroundinformationareofgreatsignificanceforunderstandingthestructuralevolution,sedimentaryenvironment,andoilandgasaccumulationlawsofthebasin,andprovideimportantreferencebasisforsubsequentoilandgasexplorationanddevelopment.三、侏羅紀—白堊紀原型盆地恢復(fù)方法RestorationmethodsforJurassicCretaceousprototypebasins恢復(fù)侏羅紀至白堊紀時期的二連盆地原型，是一項復(fù)雜且富有挑戰(zhàn)性的地質(zhì)研究工作。本文采用了多種方法和技術(shù)手段，包括古地理重建、構(gòu)造恢復(fù)、沉積相分析、古氣候模擬等，以期盡可能準確地描繪出這一時期的盆地原型面貌。RestoringtheprototypeoftheErlianBasinfromtheJurassictoCretaceousperiodisacomplexandchallenginggeologicalresearchtask.Thisarticleadoptsvariousmethodsandtechnicalmeans,includingpaleogeographicreconstruction,structuralrestoration,sedimentaryfaciesanalysis,paleoclimatesimulation,etc.,inordertoaccuratelydepicttheprototypeappearanceofthebasinduringthisperiodasmuchaspossible.古地理重建：基于詳細的沉積學(xué)、地層學(xué)和古生物學(xué)資料，我們對二連盆地在侏羅紀至白堊紀時期的古地理環(huán)境進行了重建。通過對比研究不同時期的沉積相帶分布、沉積厚度變化和古生物群落演化等信息，我們逐步恢復(fù)了盆地的古地理格局和演化歷程。PaleogeographicReconstruction:Basedondetailedsedimentological,stratigraphic,andpaleontologicaldata,wereconstructedthepaleogeographicenvironmentoftheErlianBasinduringtheJurassictoCretaceousperiods.Bycomparingandstudyingthedistributionofsedimentaryfacieszones,changesinsedimentarythickness,andevolutionofpaleontologicalcommunitiesindifferentperiods,wehavegraduallyrestoredthepaleogeographicpatternandevolutionaryprocessofthebasin.構(gòu)造恢復(fù)：構(gòu)造恢復(fù)是盆地原型恢復(fù)中的關(guān)鍵步驟。我們利用地震資料、鉆井?dāng)?shù)據(jù)和露頭觀測等多種信息，對二連盆地在侏羅紀至白堊紀時期的構(gòu)造演化進行了詳細分析。通過反演古構(gòu)造形態(tài)、確定關(guān)鍵構(gòu)造事件和識別斷裂系統(tǒng)等手段，我們逐步揭示了盆地的構(gòu)造演化歷史。Structuralrestoration:Structuralrestorationisakeystepintherestorationofbasinprototypes.WehaveconductedadetailedanalysisofthestructuralevolutionoftheErlianBasinduringtheJurassictoCretaceousperiodusingvariousinformationsuchasseismicdata,drillingdata,andoutcropobservations.Byinvertingtheancientstructuralmorphology,identifyingkeystructuralevents,andidentifyingfaultsystems,wehavegraduallyrevealedthetectonicevolutionhistoryofthebasin.沉積相分析：沉積相分析是盆地原型恢復(fù)的基礎(chǔ)工作。我們通過對二連盆地內(nèi)不同地區(qū)的沉積相進行詳細研究，包括沉積巖性、沉積序列、沉積構(gòu)造和古生物組合等特征，探討了盆地內(nèi)不同沉積相帶的分布和演化規(guī)律。Sedimentaryfaciesanalysis:Sedimentaryfaciesanalysisisthefundamentalworkfortherestorationofbasinprototypes.WeconductedadetailedstudyonthesedimentaryfaciesindifferentregionsoftheErlianBasin,includingsedimentarylithology,sedimentarysequences,sedimentarystructures,andpaleontologicalcombinations,toexplorethedistributionandevolutionpatternsofdifferentsedimentaryfaciesbeltsinthebasin.古氣候模擬：古氣候是影響盆地原型演化的重要因素之一。我們利用古氣候模擬軟件，結(jié)合地質(zhì)資料和生物標志化合物等信息，對二連盆地在侏羅紀至白堊紀時期的古氣候進行了模擬和重建。這有助于我們深入理解盆地原型演化的氣候背景和環(huán)境因素。Paleoclimatesimulation:Paleoclimateisoneoftheimportantfactorsaffectingtheevolutionofbasinprototypes.Weusedpaleoclimatesimulationsoftware,combinedwithgeologicaldataandbiomarkerinformation,tosimulateandreconstructthepaleoclimateoftheErlianBasinduringtheJurassictoCretaceousperiod.Thishelpsustogainadeeperunderstandingoftheclimaticbackgroundandenvironmentalfactorsunderlyingtheevolutionofbasinprototypes.通過綜合運用以上多種方法和技術(shù)手段，我們對二連盆地在侏羅紀至白堊紀時期的原型進行了恢復(fù)。這不僅有助于我們深入了解該地區(qū)的地質(zhì)演化歷史，也為進一步研究盆地的油氣資源潛力提供了重要依據(jù)。Throughthecomprehensiveapplicationofvariousmethodsandtechnicalmeansmentionedabove,wehaverestoredtheprototypeoftheErlianBasinduringtheJurassictoCretaceousperiod.Thisnotonlyhelpsustogainadeeperunderstandingofthegeologicalevolutionhistoryoftheregion,butalsoprovidesimportantbasisforfurtherresearchontheoilandgasresourcepotentialofthebasin.四、侏羅紀—白堊紀原型盆地恢復(fù)結(jié)果RestorationResultsofJurassicCretaceousPrototypeBasin通過對二連盆地侏羅紀—白堊紀的沉積記錄、構(gòu)造特征以及地球動力學(xué)背景的綜合分析，我們成功地恢復(fù)了該時期的原型盆地形態(tài)和演化歷史。Throughacomprehensiveanalysisofthesedimentaryrecords,structuralcharacteristics,andgeodynamicbackgroundoftheJurassicCretaceousperiodintheErlianBasin,wehavesuccessfullyrestoredtheprototypebasinmorphologyandevolutionaryhistoryofthatperiod.恢復(fù)結(jié)果顯示，侏羅紀早期，二連盆地處于裂陷初期，盆地邊緣的斷陷活動較為強烈，形成了多個小型斷陷盆地。這些斷陷盆地內(nèi)沉積了厚層的河流相和湖泊相沉積物，反映了當(dāng)時盆地的構(gòu)造活動以及氣候條件。TherestorationresultsshowthatintheearlyJurassic,theErlianBasinwasintheearlystageofrifting,andthefaultactivityattheedgeofthebasinwasrelativelystrong,formingmultiplesmallfaultbasins.Thesefaultbasinsweredepositedwiththicklayersoffluvialandlacustrinesediments,reflectingthetectonicactivityandclimaticconditionsofthebasinatthattime.進入侏羅紀中期，二連盆地的裂陷活動逐漸減弱，盆地逐漸過渡為坳陷盆地。此時，盆地內(nèi)部的沉積物逐漸轉(zhuǎn)變?yōu)楹恿飨嗪腿侵尴喑练e，表明盆地的地形逐漸平坦，水體逐漸連通。InthemiddleJurassicperiod,theriftactivityintheErlianBasingraduallyweakened,andthebasingraduallytransitionedintoadepressionbasin.Atthispoint,thesedimentinsidethebasingraduallytransformsintofluvialanddeltadeposits,indicatingthattheterrainofthebasinisgraduallyflatandthewaterbodiesaregraduallyconnected.到了侏羅紀晚期至白堊紀早期，二連盆地的構(gòu)造活動基本停止，盆地進入穩(wěn)定沉積階段。此時，盆地內(nèi)沉積了厚層的湖泊相和沼澤相沉積物，形成了豐富的烴源巖和儲層。InthelateJurassictoearlyCretaceous,thetectonicactivityintheErlianBasinbasicallystopped,andthebasinenteredastablesedimentarystage.Atthistime,thicklayersoflacustrineandswampsedimentsweredepositedinthebasin,formingabundantsourcerocksandreservoirs.白堊紀中期以后，二連盆地開始受到周緣造山帶的擠壓作用，盆地逐漸抬升并遭受剝蝕。這一過程導(dǎo)致盆地內(nèi)早期的沉積記錄被部分或全部剝蝕，使得盆地的演化歷史在一定程度上變得模糊。AfterthemidCretaceousperiod,theErlianBasinbegantobecompressedbytheperipheralorogenicbelt,graduallyupliftedandsubjectedtoerosion.Thisprocessleadstopartialorcompleteerosionoftheearlysedimentaryrecordsinthebasin,makingtheevolutionaryhistoryofthebasinsomewhatblurred.通過對二連盆地侏羅紀—白堊紀的原型盆地恢復(fù)，我們不僅深入了解了該時期的盆地構(gòu)造演化歷史，還為后續(xù)的油氣勘探和資源評價提供了重要的地質(zhì)背景信息。這些恢復(fù)結(jié)果不僅有助于我們認識二連盆地的地質(zhì)特征，也為理解相似盆地的形成和演化提供了有益的參考。ByrestoringtheprototypebasinoftheErlianBasinduringtheJurassicCretaceousperiod,wenotonlygainedadeepunderstandingofthebasin'stectonicevolutionhistoryduringthatperiod,butalsoprovidedimportantgeologicalbackgroundinformationforsubsequentoilandgasexplorationandresourceevaluation.TheserestorationresultsnotonlyhelpusunderstandthegeologicalcharacteristicsoftheErlianBasin,butalsoprovideusefulreferencesforunderstandingtheformationandevolutionofsimilarbasins.五、盆地恢復(fù)結(jié)果的地質(zhì)意義Thegeologicalsignificanceofbasinrestorationresults通過對二連盆地侏羅紀—白堊紀原型盆地的恢復(fù)研究，我們獲得了一系列關(guān)于盆地形成、演化和構(gòu)造特征的重要信息，這些信息對于深入理解盆地地質(zhì)歷史、油氣資源勘探和開發(fā)，以及區(qū)域地質(zhì)學(xué)研究具有重要的地質(zhì)意義。ThroughtherestorationstudyoftheJurassicCretaceousprototypebasinintheErlianBasin,wehaveobtainedaseriesofimportantinformationabouttheformation,evolution,andstructuralcharacteristicsofthebasin.Thisinformationisofgreatgeologicalsignificanceforadeeperunderstandingofthegeologicalhistoryofthebasin,explorationanddevelopmentofoilandgasresources,andregionalgeologicalresearch.盆地恢復(fù)結(jié)果的準確性直接關(guān)系到油氣資源勘探的效率和成功率。通過對原型盆地的恢復(fù)，我們可以更準確地判斷盆地的沉積環(huán)境、古地理格局和構(gòu)造演化歷史，進而分析盆地的油氣生成、運移和聚集規(guī)律。這有助于指導(dǎo)油氣勘探的選區(qū)、評價和部署，提高勘探效益和資源利用率。Theaccuracyofbasinrestorationresultsisdirectlyrelatedtotheefficiencyandsuccessrateofoilandgasresourceexploration.Byrestoringtheprototypebasin,wecanmoreaccuratelydeterminethesedimentaryenvironment,paleogeographicpattern,andtectonicevolutionhistoryofthebasin,andthenanalyzetherulesofoilandgasgeneration,migration,andaccumulationinthebasin.Thishelpsguidetheselection,evaluation,anddeploymentofoilandgasexploration,improvingexplorationefficiencyandresourceutilization.盆地恢復(fù)結(jié)果對于區(qū)域地質(zhì)學(xué)研究具有重要的參考價值。二連盆地作為中亞造山帶的一個重要組成部分，其形成和演化過程與周緣造山帶的演化密切相關(guān)。通過對原型盆地的恢復(fù)，我們可以更深入地了解中亞造山帶的構(gòu)造格局、演化歷史以及板塊相互作用機制，為區(qū)域地質(zhì)學(xué)研究提供重要的數(shù)據(jù)和理論支持。Theresultsofbasinrestorationhaveimportantreferencevalueforregionalgeologicalresearch.AsanimportantcomponentoftheCentralAsianorogenicbelt,theformationandevolutionoftheErlianBasinarecloselyrelatedtotheevolutionoftheperipheralorogenicbelt.Byrestoringtheprototypebasin,wecangainadeeperunderstandingofthestructuralpattern,evolutionaryhistory,andplateinteractionmechanismsoftheCentralAsianorogenicbelt,providingimportantdataandtheoreticalsupportforregionalgeologicalresearch.盆地恢復(fù)結(jié)果還有助于深化我們對地球動力學(xué)過程的認識。侏羅紀—白堊紀是地球歷史上一個重要的構(gòu)造活動期，期間發(fā)生了多期次的板塊俯沖、碰撞、轉(zhuǎn)換和裂谷作用等地球動力學(xué)過程。通過對二連盆地原型盆地的恢復(fù)，我們可以更詳細地揭示這些地球動力學(xué)過程在盆地形成和演化中的具體作用和影響，為地球科學(xué)研究提供新的視角和思路。Theresultsofbasinrestorationalsocontributetodeepeningourunderstandingofgeodynamicprocesses.TheJurassicCretaceousperiodwasanimportantperiodoftectonicactivityinEarth'shistory,duringwhichmultipleperiodsofplatesubduction,collision,transformation,andriftingoccurredintheEarth'sdynamics.ByrestoringtheprototypebasinoftheErlianBasin,wecanrevealinmoredetailthespecificrolesandimpactsofthesegeodynamicprocessesintheformationandevolutionofthebasin,providingnewperspectivesandideasforgeoscienceresearch.二連盆地侏羅紀—白堊紀原型盆地恢復(fù)研究具有重要的地質(zhì)意義，它不僅有助于指導(dǎo)油氣資源勘探和開發(fā)，還為區(qū)域地質(zhì)學(xué)和地球科學(xué)研究提供了新的數(shù)據(jù)和理論支持。未來隨著研究的深入和技術(shù)的進步，我們有望對二連盆地的地質(zhì)歷史和演化過程獲得更加全面和深入的認識。TherestorationresearchoftheJurassicCretaceousprototypebasinintheErlianBasinhasimportantgeologicalsignificance.Itnotonlyhelpsguidetheexplorationanddevelopmentofoilandgasresources,butalsoprovidesnewdataandtheoreticalsupportforregionalgeologyandearthscienceresearch.Inthefuture,withthedeepeningofresearchandtechnologicalprogress,weareexpectedtogainamorecomprehensiveandin-depthunderstandingofthegeologicalhistoryandevolutionaryprocessoftheErlianBasin.六、結(jié)論Conclusion本研究對二連盆地侏羅紀至白堊紀的原型盆地恢復(fù)進行了深入的分析和研究，通過綜合地質(zhì)、地球物理和地球化學(xué)等多方面的數(shù)據(jù)，揭示了該時期盆地的演化歷程和特征。Thisstudyconductedin-depthanalysisandresearchontherestorationoftheprototypebasinoftheErlianBasinfromtheJurassictotheCretaceous.Throughcomprehensivegeological,geophysical,andgeochemicaldata,theevolutionprocessandcharacteristicsofthebasinduringthisperiodwererevealed.在侏羅紀時期，二連盆地主要表現(xiàn)為一個大型內(nèi)陸湖盆，沉積環(huán)境多樣，包括河流、湖泊、三角洲等。隨著地殼運動和氣候變化的影響，白堊紀時期盆地的沉積環(huán)境發(fā)生了顯著的變化，湖泊面積縮小，河流作用增強，同時出現(xiàn)了沼澤等新的沉積環(huán)境。這些變化不僅反映了盆地在不同時期的沉積特征，也為我們理解盆地的形成和演化提供了重要的線索。DuringtheJurassicperiod,theErlianBasinwasmainlycharacterizedbyalargei