During Middle Triassic, the Gejiu area was in a special sedimental environment, i. e. in a restricted marginal sea basin within the continental rift system.
中三叠世，个旧矿区处于特殊的沉积环境—陆裂谷系中的局限边缘海盆。
During Middle Triassic, the Gejiu area was in a special sedimental environment, i. e. in a restricted marginal sea basin within the continental rift system.
中三叠世，个旧矿区处于特殊的沉积环境—陆裂谷系中的局限边缘海盆。
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