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| 黄骅坳陷新近系馆陶组重矿物特征及物源区意义 |
| 孙小霞,李勇,丘东洲,肖敦清,武站国,张连雪,陈蓉,赵瞻 |
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(1. 成都理工大学 油气藏开发工程国家重点实验室, 四川 成都 610059;
2. 西华师范大学 国 土资源学院, 四川 南充 637002;
3. 成都地质矿产研究所, 四川 成都 610081;
4. 大港油田, 天津 300280) |
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| 摘要: |
| 黄骅坳陷馆陶组发育一套以辫状河沉积为主的沉积体系,储集物性较好,是研究区内的重要储油层。整个黄骅坳陷新近系物源研究还处于空白状态。本文重点利用统计学中的Q型聚类及R型聚类的方法对重矿物含量特征进行分析,划分出不同的重矿物组合区及相应的母岩类型。研究结果表明:根据重矿物含量特征可划分出A—D4个不同的重矿物组合区,其中A、B、C区的母岩类型与周围燕山、沧县、埕宁3个古隆起的岩石类型能很好对应,重矿物稳定系数所揭示的物源方向也与3个古隆起位置相吻合;D区与前3个分异性很大,且重矿物稳定系数极高,应为远源搬运的沉积物,远于周围的古隆起,可能与古黄河沉积物有关。 |
| 关键词: 黄骅坳陷 新近系 重矿物 物源 渤海湾盆地 |
| DOI： |
| 附件 |
| 投稿时间：2005-12-18修订日期：2006-04-11 |
| 基金项目:四川省重点学科建设项目(编号SZD0408)和大港油田重点科技项目资助。 |
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| The heavy minerals and provenances of the Neogene Guantao Formation in the Huanghua depression |
| SUN Xiao-xia, LI Yong, QIU Dong-zhou, XIAO Dun-qing, WU Zhan-guo, ZHANG Lian-xue, CHEN Rong, ZHAO Zhan |
(1. Chengdu University of Technology, Chengdu 610059, Sichuan, China;
2. China West Normal University, Nanchong 637002, Sichuan, China;
3. Chengdu Institute of Geology and Mineral Resources, Chengdu 610082, Sichuan, China;
4. Dagang Oil Field, Tianjin 300280, China) |
| Abstract: |
| The Q-mode cluster analysis and Q-mode factor analysis are employed to examine the areas of the heavy mineral associations from the Neogene Guantao Formation in the Huanghua depression aiming at determining the nature and types of the parent rocks in the study area.Four areas of heavy mineral associations have been comparted.The parent rocks from three of the above-mentioned areas can well be compared with those from their surrounding Yanshan, Cangxian and Chengning palaeouplifts.The source areas indicated by the stable coefficients of the heavy minerals also coincide with the positions of the three palaeouplifts cited above.Judged from higher stable coefficients of the heavy minerals,the rest one of the areas of heavy mineral associations which differs greatly from the above-mentioned three areas of heavy mineral associations should be dominated by the distal sediments,and their source areas should be far from the preceding palaeouplifts.There may be four isolated drainages in the study area: three are controlled by proximal rivers and one by distal rivers which may be related with ancient Huanghe drainages. |
| Key words: Huanghua depression Neogene heavy mineral provenance Bohai Gulf Basin |