| 陕西榆林侏罗纪层序地层分析及其意义 |
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| 引用本文： | 赵廷周,崔永泉,赵忠良.陕西榆林侏罗纪层序地层分析及其意义[J].陕西地质,1996(1). |
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| 作者姓名： | 赵廷周 崔永泉 赵忠良 |
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| 作者单位： | 陕西地质矿产勘查开发局区城地质矿产研究院!咸阳市滨河路7号，712000 |
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| 摘 要： | 陕西榆林侏罗系可划分4个层序。通过大断面写真、钻孔断面分析发现，层序－2（延安组）是3种类型小层序的重复叠覆，可归并为9个体系域，与海相地层有较大差异。系统分析其层序地层学特征，对于恢复古盆地水动力循环系统、沉积过程及矿产预测有重要意义。
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| 关 键 词： | 陕西榆林 小层序 枯水体系域 湖泊扩张体系域 丰水体系域 湖泊萎缩体系域 |
ANALYSIS OF STRATIGRAPHIC SUCCESSION OF THE JURASSIC SYSTEM IN YULIN, SHAANXI AND ITS SIGNIFICANCE |
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| Zhao Tingzhou, Cui Yongquan and Zhao Zhongliang.ANALYSIS OF STRATIGRAPHIC SUCCESSION OF THE JURASSIC SYSTEM IN YULIN, SHAANXI AND ITS SIGNIFICANCE[J].Geology of Shaanxi,1996(1). |
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| Authors: | Zhao Tingzhou Cui Yongquan and Zhao Zhongliang |
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| Abstract: | The Jurassic system in Yulin, Shaanxi, is divided into four sequences in this paper. Profiles and boreholes indicate that the sequence 2 (Yanan Formation). displaved three types of small succession with recurrent oversteps, which may be ascribed to 9 system regimes. It is very different from marine facies. Systematic analysis of the stratigraphic succession features is significant for reconstruction of hydrodynamic circulation system, sedimentary process and prognostication of mineral resources in paleo-basin. |
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| Keywords: | Yuling in Shaanxi Small-scale sequence Low-water system Lake and river expansion system Water-rich system Lacustrine depletion system |
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