上扬子北缘震旦纪_早古生代沉积演化与储层分布特征

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1、1000-0569/2011/027(03)-0672-80ActaPetrologicaSinica岩石学报上扬子北缘震旦纪-早古生代沉积演化与*储层分布特征余谦牟传龙张海全谭钦银许效松闫剑飞YUQian，MUChuanLong，ZHANGHaiQuan，TANQinYin，XUXiaoSongandYANJianFei成都地质矿产研究所，成都610082ChengduInstituteofGeologyandMineralResources，Chengdu610082，China2010-1

2、0-20收稿，2011-01-30改回.YuQ，MuCL，ZhangHQ，TanQY，XuXSandYanJF.2011.SedimentaryevolutionandreservoirdistributionofnorthernUpperYangtzeplateinSinian-EarlyPaleozoic.ActaPetrologicaSinica，27(3):672－680AbstractThesedimentaryevolutionofthenorthernUpperYangtzepla

3、teisaffectedbySouthQinlingstructureonthenorth，Longmenshanstructureonthewest，andalsolong-terminheritedupliftofHannanpaleocontinentonthenorth.InSinian-EarlyPaleozoicwithQinlingSeaonthenorth，BayanHarSeaonthewest，itssedimentaryfillingevolutionisdifferent

4、fromNEedgeofYangtzeplate.Ontopofvolcanic-sedimentaryrockofTiechuanshanFormation-XixiangFormationandtilliteofNanhuaSystem，mainlyunderwentcarbonateplatforminSinian，shelfinEarly-MiddleCambrian，carbonateplatformandpericratonicupliftinLateCambrian-EarlyOr

5、dovician，platformsdrowninginMiddleOrdovician，andshelfdepositioninLateOrdovician-EarlySilurian.Somesetsofregionalsourcerockandfavorablereservoirareformedinthesedimentaryevolution.Thereservoirmainlyincludealgalreef-dolomitereservoirofDenigyingFormation

6、，ooliticlimestonereservoirofXiannvdongFormation，sandreservoirofCanglangpuFormation，anddolomitereservoirofShilongdongFormation.Thereservoirdistributeswidely.Althoughdominatedbylowporosityandlowpermeabilityoverall，carbonatitereservoirinsomeareasdevelop

7、scorrosionandthepermeabilityisfavorable.TheDingyingFormationandShilongdongFormationarethemainreservoirandpotentialexplorationtargetinnorthernYangtzeplate，inwhichoilandgasexplorationpotentialisconsiderable.KeywordsNorthernYangtzePlate;Sinian;EarlyPale

8、ozoic;Sedimentaryevolution;Reservoirdistribution摘要上扬子北缘地层沉积演化既受北部南秦岭构造、西部龙门山构造、同时也受北部汉南古陆的长期继承性隆起影响。震旦纪-早古生代，其北部为秦岭洋、西部为巴颜喀拉洋，沉积充填演化序列有别于扬子地台东南边缘。在铁船山组-西乡组火山-沉积岩系和南华系冰碛岩之上，主要经历了震旦纪初始碳酸盐台地、早中寒武世陆棚、晚末寒武世-早奥陶世碳酸盐台地及克拉通边缘隆升、中晚奥陶世台地淹没、晚奥陶-早志留世滞留陆棚沉积等阶段。沉积