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云南275个晚第三纪含煤盆地,经地质勘探,发现有一些盆地中煤与硅藻土伴生,具有较高的工业价值,先锋盆地即为典型实例。
275 late Triassic coal-bearing basins in Yunnan Province. After geological exploration, it is found that some basins are associated with diatomite and have high industrial value. The Pioneer Basin is a typical example.