The unusual primitive compositions of the west mata eruption lavas have much to tell us .
西玛塔火山喷发熔岩的不同寻常的原始组分告诉我们许多秘密。
Previously , researchers had found nearby pillow lavas , bulbous lava flows that form under water .
以前，研究人员在附近发现了形成于水下的枕状熔岩和球根状熔岩流。
The discovery of pillow lavas is of great significance in precise determination of the forming age and living environment of the animals and plant fossils .
