... fossil anomaly 古异常 fossil arc-trench gap 古岛弧-海沟断谷 fossil assemblage 化石组合 ...
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沙尔布尔铁矿床形成于古岛弧区内的局部拉张环境。
Shaerbuer Iron deposit was formed in a partial tension environment of an ancient arc zone.
对研究区中、晚石炭世区域古构造环境的认识，目前存在有限洋盆、裂陷槽、裂谷、岛弧之争。
There are many disputations about the geological setting in Carboniferous of the Bogeda Mountain, such as small oceanic basin, aulacogen, rift or Island-Arc and so on.
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