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古地震研究是经典的地震地质研究方法。通过研究古地震可以揭示史前地震的破裂形式、位移量、次数和每次古地震事件发生的时间等信息,进而可以科学地认识和推断地震断裂或发震构造的长期活动速率和地震复发周期等地震活动的演化趋势和发展规律。高精确度和高分辨率的测年是获得可靠活动速率和地震复发周期的基础,因此测年工作至关重要。要获得可靠的测年数据,不但需要了解各种测年技术的原理和适用条件,同时需要有丰富的野外地质工作经验。本文的目的在于结合自己的野外工作经验,探讨和分析古地震研究中常用的几种测年方法的样品选择和采集方式以及注意事项等内容。
Paleoearthquake research is a classic seismic geology research method. Through the study of paleoseismicity, we can reveal the rupture form, displacement and frequency of prehistoric earthquakes and the time of each paleoseismic event, so that we can scientifically recognize and infer the long-term seismic velocity and seismogenic cycle and earthquake recurrence period The Evolutionary Trend and Development Law of Earthquake Activity. High-accuracy and high-resolution dating is the basis for obtaining reliable rates of activity and recurrence cycles of the earthquake, so dating is of the essence. To obtain reliable dating data, not only need to understand the principle and applicable conditions of a variety of dating techniques, at the same time need to have a wealth of field geological work experience. The purpose of this paper is to explore and analyze the sample selection, collection methods and precautions of several dating methods commonly used in paleoseismic research in combination with their field work experience.