Conodont Biostratigraphy of Ordovician Deep-Water Turbiditic Sequences in Eastern Australia——A New Biozonal Scheme for the Open-Sea Realm

作     者：Yong Yi Zhen Ian G.Percival Phil Gilmore Jodie Rutledge Liann Deyssing Yong Yi Zhen;Ian G.Percival;Phil Gilmore;Jodie Rutledge;Liann Deyssing

作者机构：W.B.Clarke Geoscience CentreGeological Survey of New South WalesLondonderry NSW 2753Australia Head OfficeGeological Survey of New South WalesMaitland NSW 2320Australia Regional OfficeGeological Survey of New South WalesOrange NSW 2800Australia 

出 版 物：《Journal of Earth Science》 (地球科学学刊（英文版）)

年 卷 期：2021年第32卷第3期

页      面：486-500页

核心收录：

学科分类：070903[理学-古生物学与地层学(含：古人类学)] 0709[理学-地质学] 07[理学] 0708[理学-地球物理学] 0704[理学-天文学] 

基　　金：Geological Survey of New South Wales 

主　　题：conodonta Ordovician System correlation deep-water biofacies paleobiogeography 

摘      要：Ordovician conodonts representing 28 genera and 28 named and three unnamed species were identified from 740 chert and siliceous siltstone spot samples(3000 thin sections)from deep-water turbiditic sequences of the Lachlan Orogen in central and southern New South Wales,*** on these faunas,a new conodont biozonal scheme has been established to divide the Ordovician turbiditic successions of the Lachlan Orogen into 12 superbiozones and *** are(in ascending order)the Paracordylodus gracilis Superbiozone(including the Prioniodus oepiki Biozone),Periodon flabellum Superbiozone(including the Oepikodus evae Biozone in the lower part),Periodon hankensis Biozone,Periodon aculeatus Superbiozone(including the Histiodella labiosa,Histiodella holodentata,Histiodella kristinae,Pygodus serra and Pygodus anserinus biozones)and the Periodon grandis *** Pygodus anserinus Biozone is divided further into the lower and upper *** new conodont biozonation scheme spanning the upper Tremadocian to middle Katian interval permits precise age-dating and correlation of deep-water siliciclastic rocks that characterize the Ordovician Deep-Sea Realm regionally and internationally.