| 浙江长兴二叠系-三叠系界线层型剖面面临的新问题 |
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| 引用本文： | 王成源.浙江长兴二叠系-三叠系界线层型剖面面临的新问题[J].地层学杂志,2008,32(2):221-226. |
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| 作者姓名： | 王成源 |
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| 作者单位： | 中国科学院南京地质古生物研究所,江苏南京,210008 |
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| 摘 要： | 长兴煤山P/T界线在27层中间,H.parvus带之上应为I.staeschei带,不是I.isarcica带。H.parvus带厚仅4cm,可能包括H.parvus和I.lobata两个化石带的时间间隔;界线层不仅高度浓缩,而且有硬底构造,缺失一些牙形刺分子,很可能在界线层中有小的沉积间断。
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| 关 键 词： | 二叠系-三叠系界线 界线层型剖面及点位 I.staeschei带 H.parvus带 间断 硬度构造 浓缩 煤山 浙江 |
| 文章编号： | 0253-4959(2008)02-0221-06 |
| 修稿时间： | 2007年12月25 |
THE PERMIAN-TRIASSIC BOUNDARY GSSP AT MEISHAN,CHANGXING,ZHEJIANG,FACES NEW PROBLEMS |
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| Wang Cheng-yuan.THE PERMIAN-TRIASSIC BOUNDARY GSSP AT MEISHAN,CHANGXING,ZHEJIANG,FACES NEW PROBLEMS[J].Journal of Stratigraphy,2008,32(2):221-226. |
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| Authors: | Wang Cheng-yuan |
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| Abstract: | The Permian-Triassic boundary GSSP at Meishan,Changxing,is designated within bed 27.Above the H.parvus Zone is the I.staeschei Zone rather than the I.isarcica Zone.The H.parvus Zone is only 4 cm in thickness,and probably represents strata deposited during the H.parvus Zone and the I.lobata Zone.Bed 27 is highly condensed,and contains hardground surfaces at several levels.Thus,some conodont elementss are missing,and it is most likely that some depositional gaps of short time span are present within bed 27. |
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| Keywords: | Permian-Triassic boundary GSSP I staeschei Zone H parvus Zone gaps hardgroud surfaces condensed section Meishan Zhejiang |
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