| 西秦岭南带志留纪笔石生物地层 |
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| 引用本文： | 宋礼生.西秦岭南带志留纪笔石生物地层[J].甘肃地质学报,1999,8(2):28-46,T002. |
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| 作者姓名： | 宋礼生 |
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| 作者单位： | 西安地质矿产研究所!陕西西安710054 |
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| 摘 要： | 西秦岭南带志留系已发现１４个笔石层位，划分为１０ 个笔石带，４ 个笔石层，它们分别是：下志留统８ 个笔石带，２ 个笔石层；中志留统２ 个笔石带；上志留统２ 个笔石层。
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| 关 键 词： | 笔石层 西秦岭南带 志留纪 |
SILURIAN GRAPTOLITES FROM THE SOUTH ZONE OF WEST QINLING AREA |
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| SONG Li,sheng.SILURIAN GRAPTOLITES FROM THE SOUTH ZONE OF WEST QINLING AREA[J].Acta Geologica Gansu,1999,8(2):28-46,T002. |
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| Authors: | SONG Li sheng |
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| Institution: | SONG Li sheng (Xi′an Institute of Geology and Mineral Resources,CAGS,Xi′an 710054,China) |
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| Abstract: | The Silurian graptolite zones or graptolite bearing beds of West Qinling area may be divided as follows: Upper Silurian: (14)Pristiograptus bohemicus (Barrande)bed (13)P.ultimus(Perner)bed Middle Silurian: (12)Monograptus riccartonensis zone (11)Cyrtograptus cf insectus zone Lower Silurian: (10)Stomatograptus grandis zone (9)Oktavites spiralis zone (8)Streptograptus crispus zone (7)Spirograptus minor zone (6)Monograptus sedgwickii bed (5)Rastrites approximatus bed (4)Pristiograptus leei zone (3)Pristiograptus cyphus zone (2)Orthograptus vesiculosus zone (1)Parakidograptus cf acuminatus zone |
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| Keywords: | Graptolite bed The south zone of West Qinling area Silurian |
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