| 浙江中生代晚期火山—沉积岩系层序和时代 |
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| 引用本文： | 俞云文,徐步台.浙江中生代晚期火山—沉积岩系层序和时代[J].地层学杂志,1999,23(2):136-145. |
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| 作者姓名： | 俞云文 徐步台 |
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| 作者单位： | 1. 浙江省区域地质调查大队,浙江,肖山,311201
2. 浙江省地质矿产研究所,浙江,杭州,310007 |
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| 基金项目： | 浙江省科技厅资助项目;; |
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| 摘 要： | 浙江中生代晚期火山—沉积地层由上、下两个岩系组成，上岩系包括横山组、永康群、衢江群及天台群，下岩系包括建德群和磨石山群。这两个岩系的同位素年龄范围分别在１１０～９０Ｍａ和１３５～１２０Ｍａ。根据同位素地质年代结合该区火山—沉积地层的古地磁和古生物研究资料，我们提出上岩系的形成时代为早白垩世晚期至晚白垩世早期，下岩系为早白垩世早期
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| 关 键 词： | 地质年代，火山—沉积岩系，中生代地层，浙江 |
| 修稿时间： | 1997-04-21 |
Stratigraphical Sequence and Geochronology of the Upper Mesozoic Volcano-Sedi-mentary Rock Series in Zhejiang |
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| Yu Yunwen,Xu Butai.Stratigraphical Sequence and Geochronology of the Upper Mesozoic Volcano-Sedi-mentary Rock Series in Zhejiang[J].Journal of Stratigraphy,1999,23(2):136-145. |
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| Authors: | Yu Yunwen Xu Butai |
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| Abstract: | The Upper Mesozoic volcano sedimentary rock series in Zhejiang Province consists
of the upper and the lower rock series, the former including the Hengshan Formation, Yongkang
Group, Jujiang Group and Tiantai Group, and the latter including the Jiande Group and the
Moshishan Group. The isotopic ages of both series range over 110-90Ma and 135-120Ma
respectively. Based on the isotopic geochronology, combined with the data on
palaeomagnetical and palaeontological researches in the volcano sedimentary rock series in
this area, we suggest that the forming time of the upper rock series is from late Early
Cretaceous to early Late Cretaceous, and the lower is early Early Cretaceous. |
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| Keywords: | geochronology volcano sedimentary rock series Mesozoic Cretaceous Zhejiang |
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