| 四川蒲江-雅安地区自流井组地层特征及沉积相 |
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| 引用本文： | 文芠,赵兵.四川蒲江-雅安地区自流井组地层特征及沉积相[J].地层学杂志,2010,34(2). |
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| 作者姓名： | 文芠 赵兵 |
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| 作者单位： | 成都理工大学沉积地质研究院,四川成都,610059;成都理工大学沉积地质研究院,四川成都,610059 |
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| 基金项目： | 《1/5万名山幅》等四幅区域地质矿产调查项目 |
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| 摘 要： | 在雅安沙坪自流井组实测地层剖面的基础上,讨论了四川蒲江-雅安地区自流井组的岩石地层、接触关系及岩性岩相的横向变化规律。认为自流井组主要为一套湖泊-湖泊三角洲沉积,组成一个完整的长期基准面旋回层序,在自流井组中建立了一个双壳类即Pseudocardiniaovalis-Pseudocardinia cf.submagna组合,根据化石组合及地层关系将自流井组的年代地层归属于下侏罗统。
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| 关 键 词： | 岩石地层 沉积相 化石组合 自流井组 侏罗系 雅安 四川 |
STRATIGRAPHIC CHARACTER AND SEDIMENTARY FACIES OF THE ZILIUJING FORMATION IN THE PUJIAN-YA'AN AREA,SICHUAN PROVIENCE |
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| Abstract: | The measured section of the Ziliujing Formation located at Shaping,Ya'an City,is described in detail.Lithostratigraphy,stratigraphic contact relationship,and spatial variation in lithofacies and sedimentary facies are discussed in this paper.Sedimentary facies and sequence sratigraphy of base level cycle have been analysed.The Ziliujing Formatiom consists of a sequence of long base level cycle.Sedimentary facies include lacustrine and lake delta facies.The bivalve Pseudocardinia ovalis-Pseudocardinia cf.submagna association has been established in the Ziliujing Formation.It is recognized that the Ziliujing Formation belongs to the Lower Jurassic according to fossil association and stratigraphic relationship. |
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| Keywords: | lithosratigraphy sedimentary facies fossil association Ziliujing Formation Jurassic Ya'an Sichuan Province |
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