关键词: 伦坡拉, 赞－兹断层, 走滑拉分, 形成机理, 地质特征

Abstract: The right-handed strike-strike slip pull apart of Zan-Zi fault in the Ban-Nu main fault zone is the dynamic mechanism for the formation of Lunpola Basin. Features of petroleum geology in the Basin are as follows:(1)The tectonic nie frarnewark today is canstituted by south-north divided belts,east west divided blacks. (2)The Niubaa formation is thick and widely distributed and the grain size and color from bottom to top are coares-fine-coarse and red-black-red. The Dingyin ghu formation is a series of fine-grained blank and elastic rocks,limited in distribution.(3)The source racks are black,fine-grained and thick,extensive in distributian. The organic matter is in good type.matured and high in transformation ratio. (4)The reservoir sand bodies are extensively distributed,and goad in porosity and permeability. (5)Various types of ail and gas shows are widely distributed. The crude oil is heavy in specific gravity,low in viscosity,high in wax and low in sulfur.and with intensive changes after its generation.

Key words: Lunpola, Zan-Zi fault, strike-slip-pull-apart