这说明它们是在地幔柱轴部，由地幔岩和榴辉岩(古玄武质洋壳)组成的源区产生的岩浆形成的。
The evidences indicate that the magmas are formed by melting of pyrolite and eclogite (ancient basaltic oceanic crust) in the axial zone of mantle plume.
火山岩岩浆的形成既与古特提斯洋的俯冲洋壳在深部脱水有关，又与南澜沧江带红层盆地形成初期的拉张作用有关，为山—盆转化阶段特殊岩浆类型。
The origination of the magma is related with the dehydration of the subducting plate of the Palezoic Tethy Sea and the early tension of the form of the Lancangjiang belt red layer basin.
南北两地中生界被古老基底和新生代洋壳隔开，加里曼丹岛北侧-北巴拉望一线为古南海消亡的缝合带。
These two parts were partitioned by antique basement and Cenozoic oceanic crust. The suture belt of the Ancient South China Sea exists in an area from north Kalimantan to north Palawan.
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