岩溶石笋的古环境研究进展

PROGRESS IN RESEARCH ON THE PALEO-ENVIRONMENT OF KARST STALAGMITE

全球变化研究的热点问题是获得十年到百年甚至年月分辨的气候变化规律。岩溶石笋因其诸多优点 ,将在古环境研究中发挥越来越重要的作用。本文从当前研究的现状出发 ,在石笋微层年层对比、微层形成机制、稳定同位素记录、灰度、生长率、微量元素以及紫外激光诱发荧光等方面的研究进行了综述 ,并结合自身研究成果 。

One of the hot points of current research on global environmental change is to understand the trends of climate change on the scale of hundreds, tens or even one year. As a useful paleo environmental carrier, karst stalagmite has always been emphasized because of the following advantages: it is of wide distribution, bears continuous and completed records, is sensitive to local and global climate change, and it can be very precisely timed using the TIMS U series method. This paper briefly reviews several main proxies of karst stalagmite, such as micro layer, stable isotopes, gray level, growth rate, trace element and fluorescence induced by ultraviolet laser, and then summarizes the progress in our own research. According to the growth rate of stalagmite in the Qixing Cave of Guizhou Province, it is suggested that Guizhou Province may be 'wet' during the MIS 3 period.