Searched for: +
(1 - 2 of 2)
document
Yang, Yunqi (author), Wang, C. (author), Wang, Chengsi (author), Shen, Xibing (author), Yin, Ke (author), Chen, Tao (author), Shen, Andy Hsitien (author), Algeo, Thomas J. (author), Hong, Hanlie (author)
In recent years, some sapphires were found to fade in sunlight and to increase their color after UV irradiation. This unstable color phenomenon is attributed to the photochromism of corundum. The photochromic effect seriously affects the grading and evaluation of sapphires, although its mechanism is still uncertain. Here, we performed a set...
journal article 2023
document
Ji, Kaipeng (author), Wang, C. (author), Hong, Hanlie (author), Yin, Ke (author), Zhao, Chenlei (author), Prins, Maarten (author), Lourens, Lucas J. (author), Gingerich, Philip D. (author), Abels, H.A. (author)
The Paleocene-Eocene Thermal Maximum (PETM) global warming event at ∼56 million years before present changed catchment weathering and erosion. Increased chemical weathering of silicate minerals is thought to be an important process removing CO<sub>2</sub> from the atmosphere. However, changes in clay mineralogy can often be explained by...
journal article 2023