在滇东黔西地区，海相和陆相二叠—三叠系界线附近均有界线粘土岩存在。
There exists boundary claystone near the boundary between both the Marine and terrestrial Permian and Triassic in the eastern Yunnan-western Guizhou area.
在滇东黔西地区，海相和陆相二叠—三叠系界线附近均有界线粘土岩存在。
There exists boundary claystone near the boundary between both the Marine and terrestrial Permian and Triassic in the eastern Yunnan-western Guizhou area.
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