下侏罗统 lower /early jurassic
- 上三叠统和下侏罗统为全盆地分布的区域性盖层;
The upper Triassic and lower Jurassic are regional capping beds and almost cover the whole basin. - 以准噶尔盆地上二叠统和中、下侏罗统的两套烃源岩为例,分析和探讨了生物标志物的组合特征。
This paper analysed and discussed the association characteristics of the biomarker in Upper and Mid-Lower Jurassic source rocks in Junggar basin. - 四川珙县恐龙化石埋藏地是四川盆地早侏罗世重要的恐龙化石点,恐龙化石埋藏于下侏罗统自流井组之中。
Gongxin dinosaur fossils site is an important fossils site in Sichuan basin and the dinosaur fossils are buried in early Jurassic Ziliujing Formation.
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