湖南益阳中奥陶统大坪阶笔石生物地层分带及对比
Journal of Stratigraphy(2016)
Abstract
根据对采自湖南益阳南坝剖面的笔石化石的研究,该剖面中奥陶统大坪阶自下而上可识别出2个笔石带:Pseudophyllograptus angusti folius elongatus带和Isograptus victoriae divergens带,初步探明该剖面大坪阶的笔石带序列.这一笔石带序列不仅可与我国华南三山地区、西南地区、湖北宜昌及江西崇义同期地层中的笔石带序列进行对比,还能与加拿大、美国、斯堪的纳维亚等地同期笔石带序列进行较好的对比.这一笔石带序列的建立为我国与国际同期地层的高精度对比提供了新的、详实的资料.
MoreKey words
biostratigraphy,Hunan,stratigraphic correlation,Yiyang,Middle Ordovician,graptolitic biozonation,Dapingian
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