张家沟剖面沉积连续、暴露完全、化石极为丰富,是建立侏罗白垩系临界阶陆相层型和研究界线划分的理想剖面。
So the Zhangjiagou section is an ideal candidate section for erecting the terrestrial stratotype and studying the Jurassic-Cretaceous boundary in China.
张家沟剖面沉积连续、暴露完全、化石极为丰富,是建立侏罗白垩系临界阶陆相层型和研究界线划分的理想剖面。
So the Zhangjiagou section is an ideal candidate section for erecting the terrestrial stratotype and studying the Jurassic-Cretaceous boundary in China.
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