魯西平邑盆地古近紀介形類動物群及地層研究.pdf

1、中國石油大學（華東）碩士學位論文魯西平邑盆地古近紀介形類動物群及地層研究姓名：徐健申請學位級別：碩士專業(yè)：地質(zhì)學指導教師：楊景林201206PaleogeneOstracodFaunasfromPingyiBasinintheWestofShandongProvinceandStratigraphicStudyXuJian(PalaeontologyandStratigraphyGeology)DirectedbySeniorEngin

2、eerYangJinglinAbstractPingyiBasinliesinsoutheastofagroupoftheCenozoicbasinslocatedatthewestShandongupliftThePaleogenestratafromPingyiBasinwhichiscalledGuanzhuangGroupiswelldevelopedandCanbesubdividedintofourformations：th

3、eGuehengFormation，theBianqiaoFormation，theChangluFormationandtheZhujiagouFormationinascendingorderThepaperdealswithabout154micropaleontologyspecimenscollectedfrom2outcropsectionsinPingyiBasin，21samplescontainostracodfoss

4、ils，mountingto22gener鳥20species，2conformisspeciesand33indeterminatespecies，including2newspecies，aredescribedAccordingtothecompositionandgeologicaldistributionofthespecies，3assemblageshavebeenrecognizedinascendingorder：1)

5、ZiziphocyprisCyprideaRhinocyprisisdiscoveredatthebottomoftheUpperMemberofGuchengFormationindon萄ingbushigaokuangprofileItbelongstotheLateCretaceousinage2)Frambocytherefan∥iaheensisassemblagelocatesattheboaomofBianqiaoForm

6、ationintongjiazhuang—tiaogouprofileItbelongstotheLateCretaceousPaleogeneinage3)LineocyprisGuanzhuangiaHeterocyprisParacandona—CandonaOCCurSintheBianqiaoFormation(exceptforthebottomsediments)ItbelongstoEoceneAccordingtoth

7、eageofDawenkouFormation，wemayspeculatethattheChangluFormation，whichisnoos仃acodfossilsfounded，belongstoEarlyEoceneBasedontheresearchoftheseostracods，theGuartzhuangGroupinPingyiBasinbelongstoLateCretaceous—EarlyEoceneinage

8、Inadditiontoa11above，basedonthesurfacestructuresofthecarapacevalveandhabitsoftheseostracods，thelithologiccharacteristicsandtraceelementsanalysis，theresultofthesestudiesindicatethattheLowerMemberoftheGuchengFormationmight

9、havedepositedunderadryandhotclimatewiththerichprovenanceandshallowflesh，itmightbeagravellybraiedriverfaciesneartheprovenance；theUpperMembermighthavedepositedunderashallowlacustrineenvironments，accompanyingthefinesizeofse