A definite low Pn velocity region to the south of Tarim basin is possibly related to strong magma and tectonic activity.

塔里木南缘中部存在一显著的低速区，可能与岩浆活动和构造活动较强有关。

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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.

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。

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Abstract: the Lower Paleozoic carbonates of Tarim Basin were marbleized locally due to the thermal effects of magma intrusions.

摘要：在岩浆侵入体热作用下，塔里木盆地下古生界碳酸盐岩局部发生了大理岩化作用。

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