| 广西横县六景古近纪冲积物特征 |
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| 引用本文： | 刘疆,白志强.广西横县六景古近纪冲积物特征[J].沉积学报,2009,27(1):87-93. |
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| 作者姓名： | 刘疆 白志强 |
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| 作者单位： | 北京大学 地球与空间科学学院 北京 100871 |
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| 基金项目： | 国家自然科学基金，中国地质调查局地质调查项目 |
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| 摘 要： | 广西横县六景火车站南侧，角度不整合覆盖下泥盆统莫丁组和那叫组下段、被新近系大面积覆盖而呈两部分远距离割裂状态的一套“二元结构”特征显著的红色泥砂基底碳酸盐岩粗—巨砾岩，长期以来未被学者们看作一个冲积扇的有机统一体进行研究。经两次实地踏勘、系统采样和测量，以现代山麓冲积扇鉴别特征为主，辅以古冲积扇特征，综合分析得出结论:该套沉积的系列相关分割露头分别为一古近纪冲积扇之残存扇根、扇中及扇缘。该冲积扇为一典型的古近纪早期干旱气候条件下、母岩区为陡峻碳酸盐岩山体的古山麓冲积扇。
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| 关 键 词： | 广西 六景 古近系 碳酸盐砾石 冲积扇 干旱气候 |
| 收稿时间： | 1900-01-01 |
Study on Paleogene Alluvial Fan at Liujing,Guangxi,South China |
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| LIU Jiang,BAI Zhi-qiang.Study on Paleogene Alluvial Fan at Liujing,Guangxi,South China[J].Acta Sedimentologica Sinica,2009,27(1):87-93. |
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| Authors: | LIU Jiang BAI Zhi-qiang |
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| Institution: | Peking University, School of Earth and Space Sciences, Beijing 100871 |
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| Abstract: | Matrix-supported carbonatite boulders and pebbles were discretely cropped out to the northeast of Liujing town, where they unconformably overlie the Lower Devonian Moding and Najiao Formations, in which dual textures are well exhibited. Few attentions have been paid to the alluvial fan deposits ever since they were noticed. After careful examination on the coarse deposits, in comparison with the modern and ancient alluvial fan analogues, these discrete red coarse deposits are proposed as the remains of diff... |
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| Keywords: | Guangxi Liujing paleogene carbonate conglomerate alluvial fan dry climate |
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