【摘要】 塔里木盆地塔中地区古生代曾发生过多期火山活动,通过对塔中火山岩的基本特征及其成藏效应的研究,认识到塔中火成岩岩性主要为玄武岩、辉绿岩、凝灰岩和火山角砾岩;测井响应特征差异不明显,难以区分;地震反射特征往往表现为强振幅、横向振幅强弱有变化、连续性较好,相位上下错动、穿层,与围岩振幅差异较大的特征;塔中火成岩的发育受控于断裂,且以二叠系火成岩分布最为广泛,由西北向东南厚度呈逐渐减薄直至尖灭的趋势。火山活动对生、储、运移有一定的影响,从火山岩活动期与油气成藏期的匹配关系来看,火山岩与早期油气藏存在一定的关系,而与晚期油气藏无直接关系。更多还原

【Abstract】 Many volcano activities happened to Middle Area of Tarim Basin in Paleozoic.The study on the basic characteristics of volcano rocks and the reservoir formation effect shows that igneous rock lithology is mainly composed of basalt,diabase,tuff and volcano breccia;logging response characteristics are not obvious and are difficult to be distinguished;seismic reflection is characterized of strong amplitude,variable strength of lateral amplitude and continuous lateral amplitude,diastrophism and dislocation in phase and much difference from surrounding rock amplitude;the development of igneous rocks of the Middle Area of Tarim Basin is controlled by faults;the Permian igneous rock is widely distributed;and the thickness of the Permian igneous rock diminishes gradually from NW to SE until it pinches out.Volcano activity has certain effect on hydrocarbon generation,storage and migration;and volcano rock is related to early reservoir formation but is not directly related to late reservoir formation from the matching relationship between volcano rock activity period and reservoir formation.更多还原