| 辽西义县地区黄花山角砾岩研究的新进展 |
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| 关键词:Huanghuashan breccia Yixan formation western Liaoning |
| 基金项目:科技部2000年度科技基础性工作第35专项，国土资源部专项(编号:95011223)，中国地质调查局项目(编号:GDJ22) |
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| New Progress in the Study of Huanghuashan Breccia in Yixian County, Western Liaoning |
| Based on a detailed study of the Huanghuashan breccia layer, it is known that the Huanghuashan breccia is a kind of pyroclastic rock-pyroclastic sedimentary rock. The formation of the breccia layer can be divided into two periods. The early period is a period of lava overflow and violent volcanic eruption, which formed mainly pyroclastic rock or lava. The late period (the upper layer) is characterized by better stratification in Huanghuashan breccia, great to intermediate thickness, and gradual development of rhythm in upward direction, suggesting that the period was dominated by sedimentary activity and formed pyroclastic sedimentary rock. Both the Huanghuashan breccia layer and the acid volcanic rock in late Yixian period are the upper horizon of Yixian Formation, belonging to different facies of the same period. The locating of Huanghuashan breccia is of great significance in the study of Yixan Formation and Fuxin-Yixian basin in western Liaoning. |
| ZHANG Hong,YANG Fang-lin,ZHANG Li-jun,LI Zhi-tong,WANG Wu-li,MA Bing,SUN Wu-guo,ZHENG Shao-lin,ZHENG Yue-juan.2004.New Progress in the Study of Huanghuashan Breccia in Yixian County, Western Liaoning[J].Acta Geoscientica Sinica,25(3):321-326. |
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