简介:ThepaperdiscussesthedistributionofQuaternarysediments,occurrenceofsalinemineralsandphasesofneotectonicmovementsandtheirmanifestationsintheQaidambasin.TheformationoffoursuccessivelacustrineterracesinTertiaryanticlinalzonesinthewesternpartofthebasinwasrelatedtotheneotectonicmovementsthattookplace100Kaago,andthedistributionofsuchterracesdiscloses,inaway.theevolutionaryhistoryoftheQuaternarysaltlakes.AccordingtothedistributionoftheterracescoupledwiththedistributionofQuaternarysedimentsandfeaturesofsaltdeposition,fourperiodsofQuaternarysaltlakeevolutioninthebasinmaybedistinguished,whichcorrespondtofourstagesofsaltdepositionrespectively.
简介:Underpressured水库在Huatugou是普遍的()油矿西方在Qaidam盆高举,西方的中国。在在462和1248m之间的深度,在Huatugou油矿的晚第三纪水库的压力仅仅是大约40%~80%静水力学的压力。基于这些underpressured水库的地质的特征的研究,这个工作使用了液体包括分析和数字模拟调查创造这些反常压力的机制并且评估烃分发的特征。结果证明underpressured水库由undercompacted和厚mudrocks是全封上得好的。大规模构造在晚喜玛拉雅的戏高举在在Huatugou油矿的underpressure的产生的一个重要角色。在这个运动的开始,地由于阵发性的石油累积是overpressured。后来,结构高举并且侵蚀导致了多孔的反弹和温度减少,它生产了underpressure。
简介:Variationsinthedistributionsofcarbazolesanddibenzothiopheneswereinvestigatedinasetofsourcerocks,whichdiffermainlyintheirmaturitylevelsduringimmature-maturestages.Acomparisonofthedistributionsofcarbazolesanddibenzothiopheneshasrevealedthemainresultsasfollows:variationsintherelativeamounts①ofC0-,C1-,C2-dibenzothiophenesshowalowcorrelationwiththatofthecorrespondingcarbazoles,withtheformer'sbeingmuchhigherthanthelatter's;variationsintherelativeamountsofmethyldibe②nzothiopheneisomersalsodisplayalowcorrelationwiththatofthecorrespondingmethylcarbazoles,with4-/4-+1-methyldibenzothiopheneratiorangingfrom0.52to0.96,whilethecorrespondingcarbazoleratioof1-/1-+4-methylcarbazoleonlybeing0.71±0.05;themat③urityparameterfor4,6-/4,6-+1,4-dimethyldibenzothiohene,rangingfrom0.34to0.75,showsaremarkablelinearcorrelationwiththecorrespondingratioof1,8-/1,8-+1,4-dimethylcarbazole(R2>0.84).Theun-correlationmayindicatesomedifferentgeological-geochemicalfatesforsomeisomersofdibenzothiophenesandcarbazoles.Thehighcorrelationmayrevealastrongmaturationdependenceonthedimethylcarbazoledistributions,indicatingthatattentionshouldbepaidwhen1,8-/1,8-+1,4-dimethylcarbazoleisusedasapetroleummigrationindicator.
简介:InordertorealizesustainabledevelopmentofthearidareaofNorthwestChina,rationalwaterresourcesexploitationandoptimizationareprimaryprerequisites.Basedontheessentialprincipleofsustainabledevelopment,thispaperputsforwardageneralideaonwaterresourcesoptimizationandeco-environmentalprotectioninQaidamBasin,andidentifiesthecompetitivemultipletargetsofwaterresourcesoptimization.BysomequalitativemethodssuchasInput-outputModel&AHPModelandsomequantitativemethodssuchasSystemDynamicsModel&ProduceFunctionModel,somestandardplansofwaterresourcesoptimizationcomeintobeing.AccordingtotheMultipleTargetsDecisionbytheClosestValueModel,thebestplanofwaterresourcesoptimization,eco-environmentalprotectionandsustainabledevelopmentinQaidamBasinisfinallydecided.
简介:摘要:在北Qaidam盆的侏罗记煤措施的分发被地区性的结构显然控制。基于煤田探索的存在数据并且与煤田地下室结构,主要差错的特征,和煤措施的分发的分析结合了,这份报纸向前在北Qaidam盆带给煤田的一个计划构造师的单位和控制煤的结构的式样的定义。煤措施的分发的结构控制进一步被讨论。煤的分发从东方从北方测量进带状配列的特征到南方和块到西方的后来,Indosinian导致了的地区性的构造活动的几个阶段。结果显示结构的变丑在三的前面是最强烈的高举系上带子,它被戳的联合描绘。煤措施被高举到浅形成,并且对容易被利用,但是因为严重损坏,矿的规模是小的。相反,压力和紧张在三消沉是弱的,与主要是的控制煤的结构的式样戳褶层和戳单斜层联合。在消沉的煤的分发是相对稳定的。消沉的更浅的部分将在北Qaidam盆为煤资源的探索和开发成为关键区域。
简介:基于性质,构造和Huatugou油的反常压力系统的分发在Qaidam回答的核心样品,很好严峻的数据,和水库液体的全面学习盆被讨论。在压力系统和烃累积之间的关联被分析相应液体特征探讨。结果证明整个的Huatugou油领域有低形成压力和低液体精力;因此,烃是难的移居,它便于形成主要水库。学习水库,在Xiayoushashan形成定位了(N21)和Shangganchaigou形成(N1)是相对浅的并且有中等的孔和低渗透。他们分别地是有0.61和0.72的一个平均形成压力系数的反常低压的水库。根据压力系数和地热的异例,N1和N21形成属于二个独立温度压力系统,和前者有稍微更高的精力。低压的分隔空间作为主要身体由远侧的工具条组成,专业版三角洲泥作为最高的边界,和岸和浅湖泥或海藻的墩作为底部边界。他们垂直地被重叠并且水平地paralleled。形成水充满Cl−离子并且能与高咸度作为CaCl2类型被分类,它显示反常低压的分隔空间处于好封上的状况并且为油和煤气的累积和保藏有益。
简介:基于TIMESAT3.2站台,Qaidam的MODISNDVI数据(2000-2015)盆被适合,并且三个主要phenological参数与动态阀值的方法被提取包括生长季节(SGS)的开始,生长季节(EGS)和生长季节(LGS)的长度的结束。到气候变化的植被物候学和它的反应的空间、时间的变化分别地被分析。结论如下:(1)SGS主要总体上被推迟。推迟的区域多于在EGS,和EGS先进有点总体上被推迟。LGS通常被弄短。(2)与高度升起,SGS被推迟,EGS们被推进,并且LGS被弄短,phenophase出现在3000m下面并且在5000m上面的一个大变化。(3)从2000~2015,温度出现与一个大变化一起的细微增加,和降水显然增加。(4)到降水的phenophase的反应不在低举起是明显的潮湿的区域,在SGS早到达,EGS们推迟的地方;当在山区域的上面的部分,SGS推迟,EGS们与温度前进升起时,SGS早到达,EGS们与降水增加推迟。
简介:Determiningthespatio-temporaldistributionofthedeformationtiedtotheIndia-Eurasianconvergenceandtheimpactofpre-existingweaknessesontheCenozoiccrustaldeformationissignificantforunderstandinghowtheconvergencebetweenIndiaandEurasiacontributedtothedevelopmentoftheTibetanPlateau.TheexhumationhistoryofthenortheasternTibetanPlateauwasaddressedinthisresearchusinganewapatitefissiontrack(AFT)studyintheNorthQaidamthrustbelt(NQTB).ThreegranitesamplescollectedfromtheQaidamShanplutoninthenorthtiedtotheQaidamShanthrust,withAFTagesclusteringintheEocenetoMiocene.TheotherthirteensamplesobtainedfromtheLuliangShanandYukaplutonsinthesouthrelatedtotheLuliangShanthrustandtheyhaveshowedpredominantlytheCretaceousAFTages.RelatedthermalhistorymodelingbasedongrainagesandtracklengthsindicatesrapidcoolingeventsduringtheEocene-earlyOligoceneandsincelateMiocenewithintheQaidamShan,incontrasttothoseintheCretaceousandsincetheOligocene-MioceneintheLuliangShanandYukaregion.Theresults,combinedwithpublishedtheCretaceousthermochronologicalagesintheQaidamShanregion,suggestthattheNQTBhadundergorapidexhumationduringtheaccretionsalongthesouthernAsianAndean-typemarginpriortotheIndia-Eurasiancollision.TheCenozoicdeformationinitiallytookplaceintheNorthQaidamthrustbeltbytheEocene,whichisconsistentwiththerecentclaimthatthedeformationofthenortheasternTibetanPlateauinitiatedintheEoceneasaresponsetocontinentalcollisionbetweenIndiaandEurasia.Theimmediatedeformationrespondingtothecollisionistentativelyattributedtothepre-existingweaknessesofthelithosphere,andthereforethedeformationofthenortheasternTibetanPlateaushouldberegardedasaboundary-condition-dependentprocess.
简介:这研究在Balong提供n链烷和Holocene黄土的花粉记录()镇,Dulan()县,Qinghai()省,和环境变化从同意很好的两个记录重建了。过去的气候变化的三个阶段被n链烷和花粉代理的变化译解。在5370一BP前,气候温暖干燥却稍微潮湿,相应于Mid-Holocene气候的最佳;53703830一BP,气候或者变化了在之间温暖干燥稍微潮湿、温暖干燥,从Mid-Holocene气候的最佳显示转变到迟了的Holocene冷时期;在3830一BP以后,气候主要是温暖干燥的。温暖的凉爽、极其干燥的气候被n链烷和花粉代理在30402600一BP期间记录,建议环境演变为荒芜或咸的湖,根据在西方的周王朝的冷、高度经常的自然灾难时期(ca。29962721一BP)在中国。