| 第四纪地质定年与地质年表 |
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| 引用本文： | 刘嘉麒,王文远.第四纪地质定年与地质年表[J].第四纪研究,1997,17(3):193-202. |
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| 作者姓名： | 刘嘉麒 王文远 |
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| 作者单位： | 中国科学院地质研究所!北京，100029 |
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| 摘 要： | 时、空、质(物质)、能(动力)是研究地质过程、环境演变的基本要素，其中时间是关键．任何一个自然事件、任何一个地质过程，都与时间相关联，时间的重要性需要通过年龄的精确测量来体现。本文综述了第四纪定年的基本方法和特点以及近年来年代地层学所获得的进展，提出了中国第四纪的划分简表。
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| 关 键 词： | 第四纪地质定年 地质年表 |
| 收稿时间： | 1997-05-01 |
| 修稿时间： | 1997-06-02 |
QUATERNARY GEOLOGICAL DATING AND TIME SCALE |
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| Liu Jiaqi,Wang Wenyuan.QUATERNARY GEOLOGICAL DATING AND TIME SCALE[J].Quaternary Sciences,1997,17(3):193-202. |
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| Authors: | Liu Jiaqi Wang Wenyuan |
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| Institution: | Institute of Geology, Chinese Academy of Sciences, Beijing 100029 |
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| Abstract: | Quaternary is a time - window of the last 2.5Ma, the latest and shortest period of the Earth history. Within this period, our planet have undengone several glacial and interglacial stages, fluctuations, in terms of warming and cooling. In other words,Quaternary deals with high - resolution records of past events and near- present dynamics of the Earth. Therefore, timing of these events and dynamics is of significant,and a difficult subject.A member of methods and techniques have been devoleped for tackling these problems. This paper reviews the advance of the related methods, their applications and the relationships between them.Relative dating methods used in Quaternary include lithostratigraphy, biostratigraphy, magnetostratigraphy and archeology. Some memeric dating methods are useful to provide high precise age - data, and these are radiatic isotopic datings (K - Ar,Ar - Ar, ~(14)C, U-series, etc.), fission track, TL (OSL), and ESR In addition, varve chronology and dendrochronology can provide real absolute ages with supper-high resolution.These techniques have been widely applied to marine materials, glacial deposits,loess, and lacustrine sediments, which are the best bine-bearing sequences from different environments.According to the update data resulted from the mentioned investigations, the Quaternary period comprises the Pleistocene Epoch (ca 2.5-0.011Ma) which is subdivided into the Early Pleistocene (ca 2.5-0.78Ma), the Middle Pleistocene (ca 0.78-0.128Ma), and the Late Pleistocene (ca 0. 128-0.011Ma). |
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| Keywords: | Quaternary geological dating time scale |
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