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对本溪水洞全新世石笋ＴＷ９８０１不同级次微层分别计数，结合该石笋的ＴＩＭＳ－２３０Ｔｈ年龄，指出石笋 ＴＷ９８０１某一级次的微层是年层。结合其他全新世北方型石 笋微层研究结果，总结出中国北方型石笋年层的镜下影像特征，并由此提出石笋微层 计数年代学的研究思路。
According to the TIMS-230Th ages of the stalagmite TW9801, the micro-beds of TW9801 in the stalagmite were counted. Combined with the results of other Holocene northern type stalagmites, the microscopic image features of the stalactites in Northern China were summarized, and the research thought of micro-layer counting chronology of stalagmite was put forward.