| 四川龙门山泥盆纪四射珊瑚 |
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| 引用本文： | 秦洪宾,蒋飞虎.四川龙门山泥盆纪四射珊瑚[J].地球科学与环境学报,1991(1). |
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| 作者姓名： | 秦洪宾 蒋飞虎 |
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| 作者单位： | 西安地质学院地勘系
(秦洪宾)，中原石油勘探局(蒋飞虎) |
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| 摘 要： | 本文记述了产于四川龙门山地区中、上泥盆统界线附近观雾山组和土桥子组的四射珊瑚。在大量珊瑚标本鉴定的基础上,建立了中泥盆世晚期至晚泥盆世初期的四个四射珊瑚化石组合。根据四射珊瑚的演化规律,确定以Peneckiella珊瑚类的兴起和Pseudozaphrentis hejiazhaiensis,Temnophyllun(Truncicarinulum)beichua-nensis珊瑚类的消失作为龙门山地区识别中、上泥盆统界线的标志。
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| 关 键 词： | 龙门山 观雾山组 土桥子组 四射珊瑚 |
RUGOSE CORALS OF DEVONIAN PERIOD IN THE LONGMESHAN,NORTH SICHUAN,CHINA |
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| Qin Hongbin.RUGOSE CORALS OF DEVONIAN PERIOD IN THE LONGMESHAN,NORTH SICHUAN,CHINA[J].Journal of Earth Sciences and Environment,1991(1). |
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| Authors: | Qin Hongbin |
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| Institution: | Qin Hongbin
(Xi'an College of Geology)
Jiang Feihu (Zhongyuan Oilfield Exploration Bureau) |
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| Abstract: | The rugose corals described in the paper were collected from the D3/D2 boundary beds-the Guanwushan Formation and Tugiaozi Formation in the Longmens-han area.The 19 genera and the 45 species, including 5 new species, can be grouped into the following four coral assemblages. Upper Devonian:
4. Peneckiella concabotabulata-Peneckiella shawoziensis assemblage; Middle Devonian:
3. Pseudozaphrentis hejiazhaiensis-Temnophyllum(Truncicarinulum)beichuanensis assemblage, including 2 subassemblages; ( 2 ) Pseudozaphrentis he jiazhaiensis subassemblage; ( 1 ) Temnophyllum ( Truncicarinulum ) beichuanensis-Temnophyllum ( Truncica-
rinulum ) aiensis subassemblage;
2. Sinospongophyllum pseudocarinatum-Sinospongophyllum longmenshanense assemblage;
1. Temnophyllum waltheri assemblage.
The lower limit of Pcnechiella assemblage is roughly coincident with the lower limit of Polygnathus asymmetricus conodont zone.It can be regarded as the mark for recognizing the D3/D2 boundary in the Longmenshan area. |
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| Keywords: | rugose corals Longmenshan Guanwushan Tuqiaozi group |
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