简介:在这研究,在Tang-eKushk和Sarvestan区域stratigraphic节的东方的Tarbur形成的465m被学习,185薄节被提供并且分析。基于岩石层位学的研究,在这二stratigraphic节的Tarbur形成被划分成上面、更低的部分。更低的部分包括是的中等床的rudist石灰石与Gastropoda由铁小瘤组成。上面的部分用轻灰巨大的organodetrital石灰石做的。两个都学习的节的识别有孔虫目动物由组成:Orbitoides媒介,Orbitoidestriangularis,Orbitoidestissoti,Orbitoidesorientalis,Orbitoidesapiculata,Antalynakorayi,Rotaliaskourensis,Dicyclinaschlumbergeri,Nezzazatinellasp,Omphalocyclusmacroporus,Trochospirasp,铁陨石calcitrapoides,Broeckinellasp,Lepidorbitoidessocialis,Gavelinellapertusa,被检测,并且也,它有Salpingoporelladinarica的Dasycladacea,Salpingoporellaturgida,Salpingoporellasp...根据诊断有孔虫类,Tarb的年龄决心
简介:<正>Withtherapidincreasingdemandofmetallithiumanditscompoundsinscienceandtechnology,studiesonlithiumrecoverythoughlithiumionextractionfromsaltlakebrinesarebloomingbacausemorethan60percentof
简介:Tarim盆在含碳的时期期间是craton块。除了它的开西南(SWW)加深盆边缘,盆的中央部分被包围由北、东方、南部高举。在盆的大多数部分,有岩石把Biocalcarenite成员,标准石灰石成员和Xiaohaizi形成称为的碳酸盐的三层。今日的Maigeti斜坡,在盆的西南的区域定位了,曾经是到clinoform的paleogeographic碳酸盐站台边缘。在区域的地上凿穿在Xiaohaizi形成揭示超过十米沙滩免职的高精力的biospararenite。这个特征与在中间、北的盆的相等的地平线的低精力的micritic石灰石相当不同。如此的典型碳酸盐沙滩和站台边缘背景显示为礁石生长导致的环境。根据3-D的解释600km2Xinbaza调查上的地震数据,面向在的25km长的堡礁一东方向西,方向与圆丘般的几何学被描出,12km宽南方剧降礁石前面,和36km宽北方剧降backreef。礁石撑墙和轮廓也在连贯,振幅,和频率属性的Xiaohaizi形成以及地平线片的一张isopach地图上被显示出。礁石在矩形的3-D的范围以外扩大地震调查。Xiaohaizi形成的厚度是在中央礁石,和比礁石的外面大的12m的超过60m。堡礁由由狭窄的潮汐的入口分开的片断组成。礁石的邻居主要是bioclasticgrainstones的沙滩免职。由于迟了的宰相和晚第三列的构造运动,堡礁被倾斜蘸在一个SWW方向。它的updip部分被一套反向的差错打破并且错放。不过,与礁石有关的大量烃储备的潜在的stratigraphic水池被期望在它旁边基于实质的礁石规模和最近的地上凿穿指示在未来被成立。
简介:KarstrocksfromtheHuanglongFormationexposedatthemarginoftheEasternSichuanBasincanbedividedintofourtypes:slightlycorroded,moderatelycorrodedporous,intenselycorrodedbrecciatedandintenselycorrodedandreplacedsecondarycalcickarsticrocks.Thecarbon,oxygenandstrontiumisotopecompositionsofthevariouskarstrocksareanalyzedsystematicallyandcomparedtorockswithoutkarstcorrosion.Theresultsindicatethat(1)theHuanglongFormationintheeasternSichuanBasinwasarestrictedbaysuppliedandcontrolledbyfreshwaterinwhichmudmicriteandmud-dolomicriteexhibitlowδ13Candδ18Ovaluesandhigh87Sr/86Srratios;(2)alltypesofkarsticrocksinthepaleokarstreservoirsoftheHuanglongFormationintheresearchareaareaffectedbyatmosphericfreshwaterwiththeδ13Candδ18Ovaluesand87Sr/86Srratiosintheoriginalformationapproachingthoseofatmosphericfreshwater,whichreflectsancienthydrologicalconditions,fluidproperties,isotopicsourceandthefractionationeffect;(3)theintenselycorrodedandreplacedsecondarylimestoneisaffectedbyavarietyofdiageneticfluids,oftenreflectedbyδ13Candδ18Ovalues,whilethe87Sr/86Srratiosexhibitthestrongdegreeofthecorrosion;(4)aftercomparingthe87Sr/86Srratiosofeachtypeofkarstrock,thediageneticfluidsaredeterminedtobemainlyatmosphericfreshwater,anddependingonthestrengthofcorrosion,andthelow87Sr/86Srratiofluidsinthelayerwillparticipateinthekarstprocess.Thecarbon,oxygen,andstrontiumisotopesofdifferentkarsticreservoirscanprovidemeaningfulgeochemicalinformationforforecastingandevaluatingthedevelopmentanddistributionrulesoftheHuanglongFormationatthemarginoftheeasternSichuanBasinintimeandspace.更多还原
简介:<正>1IntroductionTheundergroundbrineresourcesdistributingwidelyinSichuanBasin,Chinahavedrawnworldwideattentionduetotheirunusualelementabundanceandexcellentquality.