以上来源于: WordNet
N a broad elongated depression in the earth's crust containing great thicknesses of sediment 地槽
From the Archaean to the Palaeozoic, Shandong was controlled predominantly by the E-W extending structural systems, and the basement geosynclines and platform sedimentary covers were formed.
太古代至古生代山东主要受到了东西向构造体系的控制，形成了基底“地槽”和“地台”盖层。
The principal fold age of the two "Indosinian geosynclines" is between the Middle and Late Eocene, which is marked by the regional flagrant unconformity below the Mengla Group and equivalent horizons.
这两个“印支地槽”的主要褶皱时代是中、晚始新世之交，以勐腊群及其相当层位之下的区域性巨大不整合为标志。
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