| 山东灵山岛北背来石剖面下白垩统顺层砂脉的特征及其成因动力学分析* |
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| 引用本文： | 钟建华,孙宁亮,郝兵,倪良田,宋冠先,薛纯琦,毛毳,邵珠福,葛毓柱,陈彬,刘圣鑫,彭超峰,谷东辉,王永强,李聪.山东灵山岛北背来石剖面下白垩统顺层砂脉的特征及其成因动力学分析*[J].古地理学报,2020,22(4):635-646. |
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| 作者姓名： | 钟建华 孙宁亮 郝兵 倪良田 宋冠先 薛纯琦 毛毳 邵珠福 葛毓柱 陈彬 刘圣鑫 彭超峰 谷东辉 王永强 李聪 |
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| 作者单位： | 1.中国矿业大学(北京)煤炭资源与安全开采国家重点实验室,北京 100083;2.中国石油大学(华东)地球科学与技术学院,山东青岛 266580;3.东北石油大学地球科学学院,黑龙江大庆 163318;4.地质、矿物学与地球物理学学院,波鸿大学,波鸿 44801,德国 |
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| 基金项目： | *国家自然科学基金项目(编号: 41572088)资助 |
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| 摘 要： | 山东灵山岛北背来石剖面下白垩统莱阳组发育大量砂脉。根据砂脉与层面的关系,将其分为顺层砂脉和非顺层砂脉。前者主要发育在三角洲前缘黑色泥岩中,顶、底界面普遍参差不齐,常与软沉积变形构造共生。在分析砂脉特征的基础上,建立了非地震条件下顺层砂脉侵入的物理模型和公式,推导出液化砂层的深度与侵位深度和上覆沉积层厚度之间的关系,认为形成大型砂脉的液化砂层深度都很大。该实例对研究砂脉的成因、湖泊相关沉积及盆地构造运动具有重要意义。
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| 关 键 词： | 砂脉(砂床) 动力学 下白垩统 灵山岛 |
| 收稿时间： | 2019-09-08 |
Characteristics and dynamics origin of the Lower Cretaceous sill in northern Beilaishi section of Lingshan Island,Shandong Province |
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| Zhong Jian-Hua,Sun Ning-Liang,Hao Bing,Ni Liang-Tian,Song Guan-Xian,Xue Chun-Qi,Mao Cui,Shao Zhu-Fu,Ge Yu-Zhu,Chen Bin,Liu Sheng-Xin,Peng Chao-Feng,Gu Dong-Hui,Wang Yong-Qiang,Li Cong.Characteristics and dynamics origin of the Lower Cretaceous sill in northern Beilaishi section of Lingshan Island,Shandong Province[J].Journal of Palaeogeography,2020,22(4):635-646. |
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| Authors: | Zhong Jian-Hua Sun Ning-Liang Hao Bing Ni Liang-Tian Song Guan-Xian Xue Chun-Qi Mao Cui Shao Zhu-Fu Ge Yu-Zhu Chen Bin Liu Sheng-Xin Peng Chao-Feng Gu Dong-Hui Wang Yong-Qiang Li Cong |
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| Institution: | 1.State Key Laboratory Coal Resources and Safe Mining, China University of Mining and Technology, Beijing 100083, China;2.School of Geosciences,China University of Petroleum(East China),Shandong Qingdao 266580,China;3.School of Earth Sciences,Northeast Petroleum University,Heilongjiang Daqing 163318,China;4.Institute for Geology,Mineralogy and Geophysics,Ruhr University,Bochum 44801,Germany |
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| Abstract: | A lot of sand dikes are found in the Lower Cretaceous Laiyang Formation in northern Beilaishi section located in the Lingshan Island of Shandong Province. There are two types including bedding sand dikes and unbedding sand dikes based on their relationship with the bedding plane. The bedding sand dikes, which are often associated with soft sedimentary deformation, are mainly developed in the black mudstone of delta front, and their top and bottom interfaces are generally uneven. Based on the characteristics of sand dikes, the physical model and formula of bedding sand dikes under non-seismic condition are established. The relationship between the depth of liquefied sand layer, the emplacement depth and thickness of overlying sediment layer is deduced. It is considered that the depth of liquefied sand layer which forms large sand veins is very deep. This paper is of great significance in studying the origin of sand veins, lake related deposition and basin tectonic movement. |
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| Keywords: | sand dikes dynamics Lower Cretaceous Lingshan Island |
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