Main reservoir spaces in subaerial volcanic rocks are primary pore, condensing shrinkage joint, secondary dissolution pore, cleavage fissure in mineral and structural fracture.

• 水下喷发火山岩多为具玻璃质结构的熔岩和含晶屑玻屑的层／沉凝灰岩、膨润土／伊利石岩／蒙脱石岩／沸石岩；