贵州下寒武统杷榔组的初步研究

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1、贵州工业大学硕士学位论文贵州下寒武统杷榔组的初步研究姓名：伍孟银申请学位级别：硕士专业：矿物学、岩石学、矿床学指导教师：赵元龙2003.6.2摘要本文对贵州下寒武统杷榔组作了一个全面系统的研究。通过贵州十余条杷榔组剖面，对杷榔组岩石地层特征、生物地层特征进行了详细的研究．还对杷榔组沉积环境作了简单讨论，对杷榔组三叶虫作了系统描述。到目前为止。杷榔组内共发现三叶虫属7个，本文描述是14个利■临们是：Redlichia(Pteroredlichia)chinensisWalcott1905，ArthricocephaluschauveauiBergcron1899-Arthricocephal

2、usgranulusQianetLininZhoueta1．1977，ArthricocephalusjiangkouensisYin1978，Arthricocephalitestaijiangensis(Ⅵn，inYineta／．，1978)，ArthricocephalitesxinzhaiheensisChienetLininLuetaL1974b，Arthricocephalites胪houensisZhou1977·ArthricocephalitesbalangensisLuetQianinYineta1．1978，DuyunaspisduyunensisChangetChi

3、en1977一DuyunaspislaevigatusChienetLin1977，FeilongshaniabrevisChianetLininYineta1．1978，BalangiabalangensisChien196l，Changaspismicr01嘴eLee196l，ChangaspisptacentaQianetLininZhang吖d1980a。，／通过对杷榔组生物地层进行全面总结．得出杷榔组只有一个三叶虫带，即Arthricocephalus-Changaspis组合带的结论。关键词：下寒武统；杷榔组；岩石地层；生物地层；系统描述AbstractWithcomplete

4、andsystematicstudyOHtenmoresectionsofBalangformation，thisarticlereferstothedetailedstudyonthelithostratigraphidfeaturesandbiostratigraphicfeatures，anddescribesthetrilobitesfromBalangformationsystematically．Bysofar,ithasbeenfoundthatthereare7genusinBalangformation，ofwhich14species[fietalkedabouther

5、e：Redlichia(Pteroredliehiu)chinensisWaleottl905ArthricocephaluschauveauiBergeron1899，ArthricocephalusgranulusQianetLininZhouda1．1977．ArthricocephalusjiangkouensisYin1978一Arthricocephalitesmijiangensis(Yin，inYinetaL，1978)-ArthricocephalitesxinzhaiheensisChienetLininLuela1．1974b，Arthricocephalitesji

6、shouensisZhou1977·ArthricocephalitesbalangensisLuetQianinYineta1．1978，Duyunasp／sduyunensisChangetChien1977，DuyⅫasp／slaevigatusChienetLin1977，FeEongshaniabrevisChienetLininYineta1．1978，BalangiabalangensisChien196t·ChangaspismicropygeLee1961，ChangaspisplacentaQian毗LininZhangetaL1980a-Withthoroughstu

7、dyonBalangformation，itcallbeconcludedthatthereisonlyonetrilobiteszone，thatisthecombinationzoneofArthricocephalus-ChangaspisKeyword：LowerCambrian；Balangformation；lithostratigraphid：biostratigraphic；systematicallyd