| 鄂尔多斯盆地西南部下白垩统宜君组砾岩砾组分析及其意义 |
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| 引用本文： | 王建强,贾楠,刘池洋,邱欣卫,赵红格,郭真. 鄂尔多斯盆地西南部下白垩统宜君组砾岩砾组分析及其意义[J]. 沉积学报, 2011, 29(2): 226-234 |
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| 作者姓名： | 王建强 贾楠 刘池洋 邱欣卫 赵红格 郭真 |
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| 作者单位： | 大陆动力学国家重点实验室(西北大学) 西北大学地质学系 西安 710069 |
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| 基金项目： | 国家自然科学基金(重大研究计划)重点项目(批准号:90814005); 陕西省教育厅基金项目(批准号:06JK181); 西北大学大陆动力学国家重点试验室开放课题基金资助 |
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| 摘 要： | 运用砾组分析方法,结合邻区基岩地层,对鄂尔多斯盆地西南部下白垩统宜君组砾岩的砾性、砾度、砾态及砾向进行了研究,阐述了研究区不同区域砾岩的成分来源、成因、形成的水动力条件及古水流方向.表明宜君组砾岩为早白垩世初期干旱环境下山麓洪积扇-河流相沉积产物,具多物源和快速沉积的特点,砾石分选普遍较差,磨圆呈次棱角-次圆状,风化程...
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| 关 键 词： | 鄂尔多斯盆地 早白垩世 宜君砾岩 砾组分析 渭北隆起 原盆边界 |
| 收稿时间： | 1900-01-01 |
Fabric Analysis of Yijun Gravels of Lower Cretaceous in the Southwestern Ordos Basin |
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| WANG Jian-qiang,JIA Nan,LIU Chi-yang,QIU Xin-wei,ZHAO Hong-ge,GUO Zhen. Fabric Analysis of Yijun Gravels of Lower Cretaceous in the Southwestern Ordos Basin[J]. Acta Sedimentologica Sinica, 2011, 29(2): 226-234 |
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| Authors: | WANG Jian-qiang JIA Nan LIU Chi-yang QIU Xin-wei ZHAO Hong-ge GUO Zhen |
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| Affiliation: | State Key Laboratory of Continental Dynamics, Geology Department of Northwest University, Xi'an, 710069 |
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| Abstract: | The study area is located in the southwest of the Ordos Basin,with the tectonic position in the intersection of Ordos Basin and Qinling-Qilian orogenic belt,and the area is adjacent to the western thrust fold belt in the west,and looking at Qinling orogenic belt across Weihe graben in the south.Since the Late Triassic,molasse formations were widely developed because of the neighbouring orogenic belts' multi-stage tectonic movements.Among them the Yijun conglomerate at the bottom of the Lower Cretaceous is t... |
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| Keywords: | Ordos Basin Early Cretaceous Yijun conglomerate fabric analysis of gravel Weibei uplift original basin boundary |
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