There are 6 layered rhythemic unit in the lower facies,each unit is formed by olivine gabbro or gabbro.
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美
在下部岩相中有六个层状韵律单元;每一单元由橄榄辉长岩或橄榄苏长辉长岩、苏长辉长岩或辉长岩组成.
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