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| 湖南津市黄牯山第四纪泥砾混杂堆积成因探讨 | |
| 引用本文： | 柏道远,倪艳军,周柯军,李长安,李纲,马铁球.湖南津市黄牯山第四纪泥砾混杂堆积成因探讨[J].热带地理,2009,29(6). |
| 作者姓名： | 柏道远 倪艳军 周柯军 李长安 李纲 马铁球 |
| 作者单位： | 1. 中国地质大学(武汉)地球科学学院,武汉430074;湖南省地质调查院,长沙410011 2. 湖南省地质调查院,长沙,410011 3. 中国地质大学(武汉)地球科学学院,武汉,430074 |
| 基金项目： | 中国地质调查局地质大调查项目(1212010610706) |
| 摘 要： | 湖南省津市黄牯山发育一套泥砾混杂堆积,前人曾认为属冰川成因。近年笔者对该套堆积的沉积层序、结构组成、横向变化、砾石组构与表面特征等作了详细考察,发现堆积中下细上粗的层序特征,砾石扁平面的优选定向,沿层理经差异风化和磨蚀所形成的假"冰川擦痕",由壳状裂口经磨蚀、圆化所形成的凹面石,沉积体短距离内的相变,以及周边仅有低矮丘陵的地貌背景等,表明泥砾混杂堆积为泥石流产物,而不是冰川成因。 |
| 关 键 词： | 泥砾混杂堆积 泥石流成因 第四纪 黄牯山 湖南津市 |
Origin of the Quaternary Muddy Gravel Deposits in Huanggushan of Jinshi City,Hunan Province |
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| BAI Daoyuan,NI Yanjun,ZHOU Kejun,LI Chang'an,LI Gang,MA Tieqiu.Origin of the Quaternary Muddy Gravel Deposits in Huanggushan of Jinshi City,Hunan Province[J].Tropical Geography,2009,29(6). | |
| Authors: | BAI Daoyuan NI Yanjun ZHOU Kejun LI Chang'an LI Gang MA Tieqiu |
| Institution: | 1;2;1.Faculty of Earth Sciences;China University of Geosciences;Wuhan 430074;China;2.Hunan Institute of Geology Survey;Changsha 410011;China |
| Abstract: | There is a sequence of muddy gravel deposits at Huanggushan,Jinshi City.This sequence was once considered as moraine deposits.The authors of this paper re-surveyed the lithology,compositions and lateral change of the deposits,and studied the fabric characteristics and surface textures of the gravels.On the outcrop of the muddy gravel deposits,the gravels from the lower section are smaller,which suggest that the lower section is probably the main body of debris flow deposits,while the upper section represent... |
| Keywords: | muddy gravel deposits debris flow origin Quaternary Huanggushan Jinshi City |
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