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6500万年前一位不速之客从天外飞来……四川盆地为什么是个“圆盆”形盆地? 四川盆地的形成对于地质学家来说一直是个谜。打开《中国地形图》,我们能清楚地看到
65 million years ago, an uninvited guest flew from the sky ... Why the Sichuan Basin is a “basin” shaped basin? The formation of the Sichuan Basin has always been a mystery to geologists. Open “China topographic map”, we can clearly see