【Key words】 seamount； hot spots； tectonic genesis； the effective elastic thickness； back-tracking of hot spot；
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Tectonic setting and Genesis 构造环境及成因
From characteristic analysis, it can be concluded that the five major terraces of Shagou river are mainly tectonic genesis, though the climate still played a role.
根据形态特征和成因分析，沙沟河五级阶地主要是构造隆升形成的，可以用阶地形成年代来确定构造隆升历史。
Aiming at the metallogenic epoch, metallogenic depth and the genesis of the deposit in Xiaoqinling gold field, the evidence of tectonic geology is given out.
对小秦岭金矿田的成矿时代、成矿深度、矿床成因等地质问题，给出了构造地质学方面的判据。
The lake in this basin was formed before the volcanic eruption. Thus, it is not a checked-np lake, but a tectonic lake in genesis.
盆地中湖泊的形成是在火山喷发之前，不是壅塞成因而是构造成因。
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