The study on petrology, lithochemistry and geo-chemistry of the pillow lava shows that it is the product of submarine basalt.
枕状熔岩的岩石学、岩石化学和地球化学研究表明，它是海底玄武岩的产物。
2
The lithochemistry, REE and isotope characteristic of strontium, oxygen and lead of Laowan granite show that the granite originates from lower crust by partial melting.
老湾花岗岩的岩石化学、稀土元素和同位素特征指示出老湾花岗岩源于下地壳经部分熔融作用形成。
3
According to stratigraphic compositionand lithochemistry, a"trench-arc-basin system" model for the dual-arrangedisland arc is established on the basis of the "tectonic melange".