They are commonly distributed along the margins of such stable areas as the platform and are characterized by oriented distribution along extensions of deep faults or rifts.

这类矿床多分布在地台稳定区的边缘，常沿深断裂或裂谷带延展方向呈群分布。

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It is still unclear if the decision will lead to substantive rifts with Washington, as such sales have in the past.

目前还不清楚该决定是否会像过去一样引起中美之间的严重不和。

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Seismic research in the area is hindered by frequent landslides, which cover up much of the visible tectonic evidence, such as rifts in the ground or exposed ridges, scientists say.

科学家们表示，该地区的地震研究也因为频繁的塌方而受阻，塌方掩埋了很多地质构造证据，比如地表的裂纹或暴露的山脊。

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