| 论浙江平水群的划分和地质时代 |
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| 引用本文： | 龚日祥,颜铁增,余心起,华锡宏,张志芳.论浙江平水群的划分和地质时代[J].现代地质,2009,23(2):238-245. |
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| 作者姓名： | 龚日祥 颜铁增 余心起 华锡宏 张志芳 |
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| 作者单位： | 1浙江省地质调查院,浙江 杭州311203；2中国地质大学 地球科学与资源学院,北京100083 |
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| 基金项目： | 浙江省金华市幅区域地质调查项目 |
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| 摘 要： | 依据实测的浙江省浦江县蒙山剖面，建立二个地层单位层型：蒙山组和陈塘坞组，二组归并为平水群。平水群为岩石地层清理前所用的地层名称，本研究予以恢复并修订了它的含义。平水群下部为蒙山组细碧角斑岩建造，上部为陈塘坞组海相砂泥岩建造，与上覆地层双溪坞群为整合关系；它代表浙江省西北部最古老的基底。通过对层型剖面微古植物化石和同位素年龄的研究对比，提出平水群地质时代归属中-新元古代。
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| 关 键 词： | 蒙山组 陈塘坞组 平水群 中-新元古代 浙江 |
| 收稿时间： | 2008-06-02 |
| 修稿时间： | 2008-10-27 |
Subdivision and Geological Age of Pingshui Group in Zhejiang,China |
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| GONG Ri-xiang,YAN Tie-zeng,YU Xin-qi,HUA Xi-hong,ZHANG Zhi-fang.Subdivision and Geological Age of Pingshui Group in Zhejiang,China[J].Geoscience——Journal of Graduate School,China University of Geosciences,2009,23(2):238-245. |
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| Authors: | GONG Ri-xiang YAN Tie-zeng YU Xin-qi HUA Xi-hong ZHANG Zhi-fang |
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| Institution: | 1Zhejiang Institute of Geological Survey, Hangzhou, Zhejiang311203，China;;
2School of Earth Sciences and Resources, China University of Geosciences, Beijing100083, China |
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| Abstract: | By studying the Mengshan section in Pujiang County,Zhejiang Province,this paper established two unit-stratotypes: Mengshan Formation and Chentangwu Formation.These two formations can be united into Pingshui Group,which is a former used lithostratigraphic unit and has been revised the meanings in this research.The lower part of Pingshui Group is Mengshan Formation(spilite-keratophyre formation) and the upper is Chentangwu Formation(marine facies sand-mudstone formation).Pingshui Group,representing the oldest basement in northwest Zhejiang,is conformably overlain by Shuangxiwu Group.Through study and argumentation of microflora and isotope age in the stratotype section,authors proposed that the geologic age of Pingshui Group belongs to the Meso-Neoproterozoic. |
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| Keywords: | Mengshan Formation Chentangwu Formation Pingshui Group Meso-Neoproterozoic Zhejiang |
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