作者机构:[1]华南师范大学地理科学学院,广州510631, [2]Department of Geology, Grand Valley State University. Allendale Michigan, 49401 USA, [3]Department of Geology & Geophysics, University of Wisconsin-Madison, Madison Wisconsin 53706, USA, [4]兰州大学资源环境学院,兰州730000
相关基金:国家自然科学基金资助项目(批准号:40371013,40601012),致谢:感谢Brad Singer,Kurt Refsnider和Richard A Becker对实验的指导和帮助.