The Mashan structural belt, which extends several hundred km east-west and 8–12 km north-south, is in the east section of the southern faulted tectonic belt at Bachu uplift of Tarim Basin. It is mainly controlled by two large faults—one in the south and one in the north. Commercial gas has been discovered in the area and it is considered to have further exploration potential despite the huge obstacles its topography presents to seismic prospecting. Seismic data quality in the south Mashan is poor and the reflection from top Ordovician limestone, the exploration target, is not clear.

Traditionally, the Mashan structural...

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