【摘要】 特提斯构造带有80余个沉积盆地,拥有1500×10~8t以上油气探明储量。但是,油气分布十分不均。98％的储量集中分布在阿拉伯板块东北缘、非洲大陆东北缘、斯基夫-土兰地台南缘和东南亚。这些地区油气之所以特别丰富,主要是由该地区的特殊沉积和构造环境造成的。东南亚的盆地大部分处于近代活动陆缘环境,其裂谷和弧后盆地被动陆缘沉积层序得到了良好发育和保存。其余三个地区,特别是阿拉伯板块东北缘,长期濒临的古生代、古特提斯和新特提斯洋,具有多次开合的发展历史,因而有多期次的盆地演化和被动陆缘沉积的发育。其与广海相对隔绝的封闭环境非常有利于有机质的形成和保存。更为重要的则是刚性陆缘保护了其上的盆地,避免了构造运动的破坏。更多还原

【Abstract】 Tethys Structural Belt has more than 80 sedimentary basinswith the proven oil and natural gas in place exceeding 1500 ×10~?t. However, the oil and gas distribution is not homogeneousat all. About 98% of the reserves is concentrated on the north-eastern periphery of Arabian plate, the northeastern peripheryof African Continent,the southern periphery of Sijifu-Tulanplatform and Southeast Asia. The oil and gas abundance in thisarea is derivcd from the special sedimentation and structuralenvironment. Most basins in Southeast Asia are located in themodern borderland environment. The rifts and back-arc basinpassive borderland sediment sequence have a good develop-ment and are kept well. The remaining three regions, the north-cat periphery of Arabian plate in particular, have experienceda development history of banding and disbanding for manytimes. Therefore, they have had basin evolution and passiveborderland sedimentary development for many times in manyperiods. The close environment,isolated from marine facics, isfavorable to generation and existence of organic matter.What ismore important, the stiff borderland protects the above basinsfrom damage caused by structural activities.更多还原