The fractures in trachyte are better developed than that in the basalt 其中，粗面岩中裂缝的发育程度较玄武岩要好。
2.
Through rock mechanics analysis , basalt has the most compression strength , while that of trachyte is relatively weaker 经岩石力学分析，玄武岩抗压强度最大，粗面岩抗压强度相对较弱。
3.
Though matrix material from basalt is better than trachyte , the pore throats of trachyte reservoirs are better developed than basalt in respect of pore structures ; the overflow reservoirs have the best petrophysical conditions in trachyte and then the expulsion facies is the next 但从孔隙结构特征看，粗面岩储层孔喉较玄武岩发育程度好，粗面岩中以溢流相储层物性条件最佳，喷发相次之。
4.
Several analysis methods such as casting slice , scanning electron microscope , porosity and permeability data , mercury injection data and density of fissures are used to study the reservoir properties of volcanic rocks in huang - yu - re area , the east sag of liaohe basin . volcanic rocks in this area are mainly composed of basalt , diabase , tuff and trachyte . the dominating type of volcanic reservoir space includes secondary solution pores and structural fissures 通过火山岩的常规物性分析压汞分析和裂缝密度分析，结合铸体薄片和扫描电镜，研究了辽河油田黄于热地区的火山岩储层物性特征，认为该区火山岩储层岩石类型主要有玄武岩辉绿岩凝灰岩和粗面岩，主要储集空间类型为次生的构造裂缝和溶蚀孔缝。
5.
Through observation , description , slice identification of cores and chemical analysis of whole rock , it is determined that the central volcanic rocks of the eastern depression are classified as four major types , i . e . basalt , trachyte , tuff and cataclasite of sedimentary volcanic rocks , in which trachyte is of basic series and potassium rock type 通过岩心观察、描述，岩心薄片鉴定，全岩化学分析等资料，确定东部凹陷中段火山岩岩石类型分为4大类：玄武岩、粗面岩、凝灰岩和沉火山碎屑岩类，其中粗面岩类属于碱性系列、钾岩类型。
