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Aalenian Stage
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Aalenian Stage
Encyclopedia
理学
〔中统〕4
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Aalenian Stage
阿林阶
侏罗系第五个阶。即中侏罗统第一个阶,距今1.741亿~1.703亿年形成的地层。其下为托阿尔阶,其上为巴柔阶。
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