| 中国黄土高原第四纪构造运动 |
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| 引用本文： | 闵隆瑞.中国黄土高原第四纪构造运动[J].地球学报,1984,6(2):225-236. |
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| 作者姓名： | 闵隆瑞 |
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| 作者单位： | 中国地质科学院地质研究所 |
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| 摘 要： | <正> 早在二十多年前,黄汲清教授在《中国新构造运动的几个类型》中首次将中国新构造运动划分为:1、大面积的升降运动;2、升降运动与大断裂伴生;3、翘起及断裂运动;4、拱曲运动;5、拗折、褶皱及冲断五大类型。并在论及第一类型大面积的升降运动时,明确指出,西北地区黄土高原新构造运动的特点是:“显著的幅度很大的,大面积的上升运动,自第三纪晚期以来直到现在,即在中国北方,特别在黄河流域的陕北、陇西等地区不断地进行着”。二十多年来,这些科学的论断,对中国新构造运动的研究及其类型的划分,对了解我国黄土高原地区新构造运动的特点及其表现性质等方面均起着积极的指导作用。
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THE TECTONIC MOVEMENT OF QUATERNARY IN LOESS PLATEAU OF CHINA |
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| MIN Long-rui.THE TECTONIC MOVEMENT OF QUATERNARY IN LOESS PLATEAU OF CHINA[J].Acta Geoscientia Sinica,1984,6(2):225-236. |
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| Authors: | MIN Long-rui |
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| Institution: | Institute of Geology, CAGS |
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| Abstract: | Prof. T. K. Huang pointed out 20 years ago that the elevating movement with large scale amplitude had been taking place from the Tertiary period in the north part of China, especially, in the Loess Plateau. On the basis of this scientific conclusion and the sedimentary and tectonic characteristics of the Quarternary period, the writer attempts to make a subdivision of the Quaternary system and tectonic stages of the Loess Plateau in China (Table 1, 2.).The first stage (Pliocene, 2.00 m. y. ): Alluval-lacustrine and proluvial-alluvial reddish soil, sand and gravel were widely accumlated within the Loess Plateau as a large open inland basin during this stage. Descending movement predominated.The second stage (Late Pliocene-Early Plistocene, about 2.00 m. y.): The basement of the large open basin bent down, accompanied by development of different regions with various tectonic characteristics. In the north of the basin (socalled Liang-Mao geomorphological region), uplifting movement predominated, and in the middle and the south (so-called Yuan geomorphological region) descending movement predominated, while Sanman and Wu-cheng formations were formed.The Quaternary strata in the Loess Plateau Table 1The third stage (Middle Pleistocene-middle Late Pleistocene, 0.70-0.03 m. y.): The loess of Lishi and xifene formations and the alluvial-lacustrine of Salawusu formation were widely accumulated in the Plateau. Several fossil soil bands were found in the loess. Slow elevating movement predominated in this stage. The embryo of the Loess Plateau wasformed.The fourth stage (late Late Pleistoceneearly time of Holocene, 0.03-0.008 m. y.): The loess of Malan formation was accumulated in this area. Uplifting movement predominated in this stage and the Loess Plateau was formed. Then it was characterized by Liang-Mao and Yuan geomorphological types due to erosion and washing. In short, the tectonic movemeot of Quaternary period in the Loess Plateau shows a cycle from descending, slow elevating to uplifting.It is quite evident that the uplift of plateau was closely related to tectonic movement in the Himalayan stage, and in particular, it was affected largely by tectonic movement in early Holocenelate Late Pleistocene. |
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