How Do I Treat Calcium Deposits?

Stalagmite, a calcium carbonate limestone, is located at the bottom of a karst cave. It is a natural phenomenon in karst terrain.

A stalagmite refers to a pointed cone standing in the bottom of a cave.

Stalagmites are due to containing

Stalagmite is

Except for particularly dry years, where the top of the cave no longer drips, stalagmites generally grow every year. As the seasons change,

Southwestern University study finds stalagmites record quaternary climate change

In 2009, Li Tingyong found a stalagmite with a very high uranium concentration in the mouth of the Golden Buddha goat in the karst landform. "Through the law of uranium content decay, the 'age' of stalagmites can be calculated." Li Tingyong said that rare high uranium concentration stalagmites in Yangkoudong laid a foundation for obtaining accurate geological ages.

In the following 7 years, Li Tingyong led the team to collect collapsed stalagmites from the cave one after another, and cooperated with many universities at home and abroad. Finally, through the method of radioactive decay sequence, accurately determined one of the stalagmites deposited between 58,000 and 79,000 years ago. In addition, the team accurately reconstructed the history of changes in the Asian summer monsoon between 58,000 and 79,000 years ago by recording changes in the high-resolution oxygen 18 isotope ratio of the stalagmite.

"In the Asian monsoon region, summer precipitation is brought by the summer monsoon. This time we found that the change of the Asian summer monsoon is not only affected by the climate change in the high latitudes of the northern hemisphere, but also by the tropical ocean and the climate of the southern hemisphere." Li Tingyong introduced, In the case of global warming, various extreme weathers are frequent. In the future, it is necessary to analyze the changing rules of the Earth's climate system and then make a climate prediction by integrating the impact of human activities. The research results of this stalagmite provide a reference for the accurate calibration of a series of climatic abrupt events, and are of great significance for the analysis of environmental changes and the establishment of prediction reference models in the future. ^[3]

Provide important reference for predicting future climate change

It sounds magical that a stalagmite found in a cave can provide an important reference for understanding ancient climate change and predicting future climate change. However, this is the scientific research project led by Professor Cheng Hai of the Institute of Global Environmental Change of Xi'an Jiaotong University. The paper "Asian Monsoon Record and End of Ice Age in the Past 640,000 Years" was published in top international academic journals in 2016 "Nature" has attracted international attention.

According to Professor Cheng Hai, the changing rules and trends of the Asian monsoon and its relationship with global climate change have been the scientific issues and research hotspots that have attracted much attention. The study is based on samples of cave stalagmites obtained in the Sanbao Cave of Shennongjia, Central China, and uses the world-leading uranium dating technology possessed by the Isotope Laboratory of Xi'an Jiaotong University to extend the oxygen isotope records of cave stalagmites in the Asian monsoon to the past 640,000 (From the past 370,000 years to 640,000 years). The oxygen isotope record of cave stalagmites obtained by the Institute is currently the longest-scale high-resolution high-resolution Asian monsoon stalagmite record in the world, covering the past seven major glacial end periods. This record is globally comparable and is of great significance for studying the relationship and driving factors of the Asian monsoon and global climate change. The research results of this project provide important references for predicting future climate change. ^[4]