New discovery of Nanhuaian rift system in southwestern Tarim basin and its geological significance

作者：Li Yong^*; Chen Cai; Feng XiaoJun; Zhang Liang; Zeng ChangMin; Fan QiuHai

来源：Acta Petrologica Sinica, 2016, 32(3): 825-832.

• Southwestern Tarim Basin
• Nanhuaian
• Rift
• Rodinia Supercontinent
• Half graben structure

We firstly discovered the Nanhuaian rift system in southwestern Tarim Basin after a systemic interpretation of seismic data. The rift strikes NW-SE and presents an elongated shape in the plane with about 450km long and 70 similar to 110km wide. It is a dustpan-like basin in the profile: a large-sized normal fault, as the rift's syndeposition fault, is the southwestern border of the rift; the deposition thickness gradually thinning towards northeast. The deposition center is close to the southwestern border of the rift system, induced a large-scale half graben structure. The Nanhua system as typical growth strata is the main part of the rift deposition system. The Sinian system is deposited in the late period of or after the rifling. The southwestern Tarim Basin rift is formed during the breakup of the Rodinia Supercontinent, with a potential oil and gas exploration foreground.

• 出版日期2016-3
• 单位浙江大学