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地球学报 2012
越南东北部CatBa岛泥盆系-石炭系过渡层的初探Keywords: D-Cboundary,Conodont,δ13C,CatBaIsland,Vietnam Abstract: ThePhoHanFormationisexposedonsouthernCatBaIsland,HaiPhongProvinceinnortheasternVietnam,andintercalatestheDevonianandCarbonif-erous(D-C)boundary(TaandDoan,2007;Komatsuetal.,2012).TheD-Cboundarysectionconsistsmainlyoflimestonebeds,numberedfrom1to167,interca-latedwithalternatingblackorganic-richshales.Thelimestoneyieldsabundantbrachiopods,crinoid-stemsandconodonts.Preliminaryinvestigationsonstrati-graphy(conodontbiostratigraphyandδ13C)andsedi-mentologyofbeds113-133wereundertakeninthisstudy.
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