砾石钙膜纹层测年数据采集技术的实现方法及可行性分析

根据砾石钙膜纹层的明暗度测年是沉积物年代测定的一种新的思路．本阐述了用扫描仪对砾石钙膜切面直接进行高分辨率扫描，继而通过计算机获取其明暗度值并绘制明暗度一厚度曲线图，将它与其它定年结果对比确定砾石钙膜开始形成的年代的思路和实现方法．同时分别对同一剖面多次扫描，同一样品不同部位和同一阶地面上所取不同样品的结果进行了相关性分析，结果表明此方法是可靠的．

REALIZATION METHOD AND FEASIBILITY ANALYSIS ON DATA COLLECTION OF CALICHE-LAMINATION DATING

The dating method according to gray of caliche-lamination is a new ideal for ideology of sediment. In this article, the train of thought and realization technique of this dating method are expatiated. First the caliche section is scanned directly with high resolution by flat scanner. After this, their gray values can be obtained and the gray-thickness graph is drown in computer by using our application program. Then the curve is compared with other dating results, such as the bathy-oxygen-isotope curve, loess-palaeosol sequence and loess-grain curve etc., therefore the age of caliche formation is determined. Meanwhile the correlation analysis on the different results is done, for several times scanning on the same profile, different positions on the same sample face, and different samples from the same terrace. The results show that the method is feasible.