摘要
华南浙江长兴煤山剖面是全球两个金钉子点位(全球二叠系-三叠系界线层型及点和全球吴家坪阶-长兴阶界线层型及点)定位的GSSP剖面。煤山剖面上二叠统-下三叠统自下向上依次为龙潭组顶部、长兴组、殷坑组、和龙山组及南陵湖组下部。文中综合近30年来国内外学者对煤山剖面牙形石研究成果,将该剖面晚二叠世-早三叠世牙形石序列自下而上归纳为13个牙形石带,分别为:1)Neogondolella orientalis-Neogondolella longi-cuspidata带(龙潭组顶部-长兴组底部:第1层-4a-1层);2)Neogondolella wangi带(长兴组下部:第4a-2层-10层),其首现点标定了国际长兴阶底界金钉子点位;3)Neogondolella changxingensis-Neogondolella deflecta带(长兴组上部:第11层-23层);4)Neogondolella yini-N.zhangi带(长兴组顶部:P/T界线层第24层);5)Neogondolella meishanensis带(殷坑组底部:P/T界线层第25层);6)Hindeodus changxingensis带(殷坑组底部:P/T界线层第26层);7)N.taylorae带(殷坑组底部:P/T界线层第27a层-27b层);8)Hindeodus parvus带(殷坑组底部:P/T界线层第27c层),其首现点标定了国际三叠系底界金钉子点位;9)Isarcicella staeschei带(殷坑组底部:P/T界线层第27d层-29a层);10)Isarcicellaisarcica带(殷坑组下部-中部:第29b层-51层);11)Neogondolella tulongensis-Neogondolella planata带(殷坑组上部-和龙山组下部:第52层-72层);12)Neo-spathodus kummeli带(和龙山组中部:第73层-92层);13)Neospathodus cristagalli-Neospathodus dieneri带(和龙山组上部-南陵湖组下部:第93层-111层)。同时,为了提高全球不同地区二叠系-三叠系界线牙形石对比精度,文中也讨论并修改了该剖面二叠纪-三叠纪之交hindeollid型与gondolellid型平行的牙形石带。
Meishan section at Changxing,Zhejiang Province,South China contains two golden spikes——the Global Stratotype Section and Point（GSSP） for the Permian-Triassic Boundary and Wuchiapingian-Changhsingian Boundary.In ascending order,the Upper Permian and Lower Triassic at Meishan section consist of upper Longtan Formation,Changxing Formation,Yinkeng Formation,Helongshan Formation,and lower Nanlinghu Formation.Based on the research of conodonts at Meishan section during past 30 years,this paper summarizes 13 conodont zones for the Upper Permian-Lower Triassic.In ascending order they are as follows：Neogondolella orientalis-Neogondolella longicuspidata Zone（uppermost Longtan Formation to lowermost Changxing Formation,beds 1—4a-1）,Neogondolella wangi Zone（lower part of Changxing Formation,beds 4a-2—10.The first appearance of this Zone is the marker of the beginning of Changshingian）,Neogondolella changxingensis-Neogondolella deflecta Zone（upper part of Changxing Formation,beds 11—23）,Neogondolella yini-N.zhangi Zone（top of Changxing Formation,bed 24）,Neogondolella meishanensis Zone（basal part of Yinkeng Formation,bed 25）,Hindeodus changxingensis Zone（basal part of Yinkeng Formation,bed 26）,Neogondolella taylorae Zone（basal part of Yinkeng,beds 27a—27b）,Hindeodus parvus Zone（basal part of Yinkeng Formation,bed 27c.The first appearance of Hindeodus parvus Zone is the marker for the base of the Triassic System）,Isarcicella staeschei Zone（basal part of Yinkeng Formation,beds 27d—29a）,Isarcicella isarcica Zone（lower and middle part of Yinkeng Formation,beds 29b—51）,Neogondolella tulongensis-Neogondolella planata Zone（upper Yinkeng Formation and lower part of helongshan Formation,beds 52—72）,Neospathodus kummeli Zone（middle part of Helongshan Formation,beds 73—92）,Neospathodu cristagalli-Neospathodu dieneri Zone（upper Helongshan Formation and lower Nanlinghu Formation,beds 93—111）.For ameliorating cross-correlations between different regions around the world,parallel hindeodid and gondolellid zonations during the Permian-Triassic transitional period have also been discussed and revised.
出处
《古生物学报》
CAS
CSCD
北大核心
2009年第3期474-486,共13页
Acta Palaeontologica Sinica
基金
国家自然科学基金((40621002
400830212)资助
