| 我国东北东部侏罗纪的龙爪沟群和鸡西群与其意义 |
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| 引用本文： | 顾知微,望竞,陈道阔,姜剑虹.我国东北东部侏罗纪的龙爪沟群和鸡西群与其意义[J].现代地质,1988,2(3):299. |
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| 作者姓名： | 顾知微 望竞 陈道阔 姜剑虹 |
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| 作者单位： | 中国科学南京地质古生物研究所
(顾知微)，东煤公司煤田地质局哈尔滨科研所
(望竞，陈道阔)，东煤公司煤田地质局哈尔滨科研所(姜剑虹) |
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| 摘 要： | 我国东北区的龙瓜沟群和鸡西群中部,由含有侏罗纪化石的海相与非海相岩层组成.龙爪沟群属中,上侏罗统,鸡西群可能全属上侏罗统,其中部的城子河组产有启末利阶的带化石细线雏蛤Buchia tenuistviata（Lahusen）.非海相的热河动物化石群中的软体动物分子与上侏罗统启末利阶海相双壳类化石在城子河组中同组共存,进一步核实了热河动物化石群的侏罗纪年代.
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| 关 键 词： | 龙瓜沟群 鸡西群 中、上侏罗统 Buchia |
JURASSIC LONGZHAOGOU GROUP AND JIXI GROUP IN THE EAST NORTHEAST CHINA AND THEIR SIGNIFICANCES |
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| Gu Zhiwei.JURASSIC LONGZHAOGOU GROUP AND JIXI GROUP IN THE EAST NORTHEAST CHINA AND THEIR SIGNIFICANCES[J].Geoscience——Journal of Graduate School,China University of Geosciences,1988,2(3):299. |
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| Authors: | Gu Zhiwei |
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| Abstract: | The Longzhaogou and middle Jixi Groups Consist of interbedded marine and nonmarine layered rocks with Jurassic faunas. The Longzhaogou Group contains the Middle and Upper Jurasssic whereas the whole Jixi Group be-loags probably to the Upper Jurassic. The common occurrence of both the molluscan species of the nonmarine Jehol fauna and marine Upper Jurassic or Kimmeridgian bivalves in the Chengzihe Formation of the Jixi Group proves the Jurassic age of the Jehol fauna. In the lower part of the Cheng-zihe Formation occurs the Kimmeridgian zonal fossil Buchia tenuistriata (Lahusen). |
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| Keywords: | : Longzhaogou Group Jixi Group Middle Upper Iurassic Buchia |
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