Dictionary of Geotourism

2020 Edition
| Editors: Anze Chen, Young Ng, Erkuang Zhang, Mingzhong Tian

Changjiang (Yangtze River) Stone

Reference work entry
DOI: https://doi.org/10.1007/978-981-13-2538-0_281
Changjiang (Yangtze River) stones mainly refer to the pebbles found along the main course and tributaries of the Changjiang. These pebbles are widely distributed over thousands of kilometres. Pebbles of igneous, sedimentary and metamorphic rocks can be found on the river banks, and the high-quality stones with striking colours, fine textures and unique shapes are mostly siliceous and volcanic rocks. The Three Gorges stone is typical and is mainly found in the section of Changjiang from Yichang to Zhijiang, where there are gravel layers on the primary and secondary terraces on the Holocene to Pleistocene floodplains. The original rocks are in the gravel layer of the early Mesozoic Cretaceous deposits, which contain large amounts of opal, agate and chalcedony gravel that have become marvellous Three Gorges stones due to internal and external geological forces. The Three Gorges stones have unique patterns, colours and cracks. There are numerous varieties, and the valuable types include...
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