| 黑龙江东部始新统虎林组中期基准面旋回与聚煤作用 |
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| 引用本文： | 李仰春,杨晓平 金哲岩 郝永鸿.黑龙江东部始新统虎林组中期基准面旋回与聚煤作用[J].中国地质,2008,35(4):699-705. |
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| 作者姓名： | 李仰春 杨晓平 金哲岩 郝永鸿 |
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| 作者单位： | 1. 中国地质大学地球科学学院,湖北,武汉,430074;中国地质大学地质过程与矿产资源国家重点实验室,湖北,武汉,430074;黑龙江省地质调查研究总院齐齐哈尔分院,黑龙江,齐齐哈尔,161005
2. 黑龙江省地质调查研究总院齐齐哈尔分院,黑龙江,齐齐哈尔,161005 |
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| 基金项目： | 中国地质调查局地质调查项目 |
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| 摘 要： | 以虎林市大石桥86-46钻孔为例对黑龙江东部敦密断陷盆地内虎林组进行了高分辨率层序中期基准面旋回划分,识别出3个中期基准面旋回。3个中期基准面旋回均由上升、下降两个半旋回构成基本对称型结构,可进一步分为上升半旋回厚度大于下降半旋回和上升半旋回厚度小于下降半旋回两种类型,它们代表了敦密断陷盆地内3次较明显的湖侵-湖退沉积。在此基础上,讨论了中期基准面旋回与聚煤作用关系,其中中期基准面下降半旋回聚煤作用最好,是重要工业煤层的有利赋存部位,上升半旋回聚煤作用差-较差。研究结果显示虎林组第①、②个中期基准面旋回下降半旋回聚煤作用最好,是采煤及扩大远景找矿的首选层位。
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| 关 键 词： | 虎林组 中期基准面旋回 聚煤作用 黑龙江东部 敦密断陷盆地 始新统 |
Medium-term datum plane cycle and coal-accumulating processes of the Eocene Hulin Formation in eastern Heilongjiang |
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| LI Yang-chun,YANG Xiao-ping,JIN Zhe-yan,HAO Yong-hong.Medium-term datum plane cycle and coal-accumulating processes of the Eocene Hulin Formation in eastern Heilongjiang[J].Chinese Geology,2008,35(4):699-705. |
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| Authors: | LI Yang-chun YANG Xiao-ping JIN Zhe-yan HAO Yong-hong |
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| Institution: | 1. Faculty of Earth Science;China University of Geosciences;Wuhan 430074;Hubei;China;2. State Key Laboratory of Geological Processes and Mineral Resources;3. Qiqihar Branch;Research Institute of Regional Geological Survey of Heilongjiang;Qiqihar 161005;Heilongjiang;China |
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| Abstract: | Using the data of drill hole 86-46 in Dashiqiao, Hulin City, the high-resolution sequence stratigraphic division of the Hulin Formation in the Dunmi downfaulted basin, eastern Heilongjiang, was made, and three medium-term datum plane cycles were recognized. The three cycles are all made up of broadly symmetric structure consisting of two half-cycles of rising and falling, and they may be subdivided into tow basic types, namely, the rising half-cycle thicker than the falling half-cycle and the rising half-cy... |
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| Keywords: | Hulin Formation medium-term datum plane cycle coal-accumulating process eastern Heilongjiang Dunmi downfaulted basin Eocene |
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