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Dashanpu Formation
The Dashanpu Formation is a Mid to Late Jurassic rock formation in China, most notable for the wealth of dinosaurs that have been excavated from the area. The Dashanpu Formation sits in and around the small township of Dashanpu (), situated seven kilometres north-east from Sichuan's third largest city, Zigong, in the Da'an District.
==Geology==
The Dashanpu Formation includes four layers of rock: The upper and lower Shaximiao Formations (), although they are commonly referred to as one, simply being called "Shaximiao Formations". The upper Shaximiao Formation is also known as the Shangshaximiao Formation, and the lower Shaximiao Formation is also known as the Xiashaximiao Formation. The Shaximiao Formations are the most productive, despite being only two of four. The last two formations, the Zhenchuchong Formation and the Ziliujing Formation, are noticeably less productive and remain relatively unexplored.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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