incubus
发表于 2025-3-28 16:16:25
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daredevil
发表于 2025-3-28 21:49:55
The Precambrian of West Africa — synthesis and reviewowever, has had more to do with levels of erosion, relative abundance of different rock types, climatic changes, erosion levels and intensity of weathering than with the fundamentals of global tectonics. Rock associations remain the most important control on the occurrence of mineral deposits.
magnanimity
发表于 2025-3-28 23:49:13
Economic potential of the younger sedimentary basins are generally not so large or abundant as in basement terranes, but include ores of lead, zinc, iron and manganese, and there may also be some bauxite. Smaller deposits of these various resources are already exploited on a small scale.
带来的感觉
发表于 2025-3-29 06:13:00
Allgemeine Schmerzen im Abdomen,coastal basins, the Senegal Basin is by far the largest, but the basins along the southern coast of West Africa are larger than their surface extents suggest, as substantial parts of their successions are offshore.
激怒
发表于 2025-3-29 10:15:23
The Benue Trough and coastal basinscoastal basins, the Senegal Basin is by far the largest, but the basins along the southern coast of West Africa are larger than their surface extents suggest, as substantial parts of their successions are offshore.
使痛苦
发表于 2025-3-29 14:13:16
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Pruritus
发表于 2025-3-29 15:57:01
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遵循的规范
发表于 2025-3-29 21:41:24
,Solitäre Rundschatten der Lungen,ntial thickness of Quaternary sediments in the Chad Basin..Cretaceous marine sedimentation was of shallow-water type, depositing limestones, sandstones and shales, with lithologies and fossils that indicate generally warm climatic conditions throughout. Maximum sediment thicknesses in the lullmedden and Chad Basins are of the order of 2000–3000 m.
赞美者
发表于 2025-3-30 00:08:40
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Thyroiditis
发表于 2025-3-30 04:46:14
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