And there were only a very few aftershocks in the conductive lower crust.

因此,无论从竖向分层还是从横向非均匀性上看,唐山主震及其大多数余震都与高阻上地壳密切相关.

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The metallogenic source material comes from the upper mantle and the lower crust.

主要成矿时代为晚石炭世-早二叠世.

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