18938.安徽巢湖石炭系和州組沉積學(xué)及有孔蟲地層學(xué)

1、中國科學(xué)院研究生院碩士學(xué)位論文安徽巢湖石炭系和州組沉積學(xué)及有孔蟲地層學(xué)姓名：盛青怡申請學(xué)位級別：碩士專業(yè)：古生物學(xué)與地層學(xué)指導(dǎo)教師：王向東201205AbstractCarboniferousandPermiancyclothemshaVealwaysbeenpaidcoIlsiderableattentionamongtheresearchesontheLatePaleozoicIceAgeTheyarethetransgressiV

2、e—regressiVed印ositionalsequencespresentintheCarboniferousandPer塒anshallowmarinesuccessionsworldwide，especiallyintheNonhemHemisphereTheyarecommonlybelieVedtesult仔omtheglobalsea—leVelchangesthatcouldbeattI’ibutedtolarge—sc

3、alewaxingandwaningofGondwananglaciersHoweVer，thecause，thetimingoftheonset，andtheaVeragecycleperiodofCarboniferousandPemliancyclothemsarestillunderdebateComparedwithNorthAmericaandEurope，onlyafewresearcheshaVebeendealtwit

4、honotherregionsTheFenghuangshansection，whichislocatedatChaohuCityofAnhuiProVinceandbelongstotheLowerYangtzeBlock，isselectedhereinasacasestudytoeValuateapossiblecyclothemicd印ositioninPaleotethyanregionForaminifersarethepr

5、imarycontmutortoestablishchronostratigr印hical仔ameworkoftheHezhouFonnatiollThefiVefor鋤iniferalassemblagezones，i11ascendillgorder，are(1)the彳sfP，4D口，℃厶口P講sc“srztgDs“s一爿sfP，。D口，℃辦以PdZsc淞6以scJlz舫rfc“sZone；(2)the￡DP6，fc忍f以Zone

6、；(3)the么sfe，D日，c矗以Pc打sc“5posf，‘￡但DJ“s一施，彪陀f腸p比ss“腸Zone；(4)the上10sfq船脅“以p口r夠pmn懈PZone；(5)theG厶，6iV以～“，i，2以一—P，PcfoJfq∥吝，，口ZoneTheysuggesttheHezhouFoImationhaVingarallge仔omthelateViseantoearlyBashl(irianinageTheHezhouFomat

7、ioniscomposedofshallowsubtidaltoi11tertidalcarbonateswith丘equentlyandcyclicallyinterVeningsubaerialsiliciclastic／clayrocksand／orexposuresur白ces0nthebasisofdetailedfieldmeasurements，polishedslabandthinsectionstudies，powde

8、rX—raydif行actionexperiments，andanalysisofsedimentarystructures，l2majormicrofacies，and5tralls伊essiVe—re鏟essiVedepositionalsequencesarerecognizedinthe296一m—thickHezhouFoll[11ationSequence1d印osited丘0mthe1ateⅥsean(V3c)toearl