找回密碼
 To register

QQ登錄

只需一步,快速開始

掃一掃,訪問微社區(qū)

打印 上一主題 下一主題

Titlebook: Geology and Mineral Resources of West Africa; J. B. Wright,J. B. Wright Book 1985 J. B. Wright, D. A. Hastings, W. B. Jones & H. R. Willia

[復(fù)制鏈接]
樓主: 板條箱
41#
發(fā)表于 2025-3-28 16:16:25 | 只看該作者
42#
發(fā)表于 2025-3-28 21:49:55 | 只看該作者
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.
43#
發(fā)表于 2025-3-28 23:49:13 | 只看該作者
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.
44#
發(fā)表于 2025-3-29 06:13:00 | 只看該作者
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.
45#
發(fā)表于 2025-3-29 10:15:23 | 只看該作者
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.
46#
發(fā)表于 2025-3-29 14:13:16 | 只看該作者
47#
發(fā)表于 2025-3-29 15:57:01 | 只看該作者
48#
發(fā)表于 2025-3-29 21:41:24 | 只看該作者
,Solit?re 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.
49#
發(fā)表于 2025-3-30 00:08:40 | 只看該作者
50#
發(fā)表于 2025-3-30 04:46:14 | 只看該作者
 關(guān)于派博傳思  派博傳思旗下網(wǎng)站  友情鏈接
派博傳思介紹 公司地理位置 論文服務(wù)流程 影響因子官網(wǎng) 吾愛論文網(wǎng) 大講堂 北京大學(xué) Oxford Uni. Harvard Uni.
發(fā)展歷史沿革 期刊點(diǎn)評(píng) 投稿經(jīng)驗(yàn)總結(jié) SCIENCEGARD IMPACTFACTOR 派博系數(shù) 清華大學(xué) Yale Uni. Stanford Uni.
QQ|Archiver|手機(jī)版|小黑屋| 派博傳思國際 ( 京公網(wǎng)安備110108008328) GMT+8, 2025-10-9 12:06
Copyright © 2001-2015 派博傳思   京公網(wǎng)安備110108008328 版權(quán)所有 All rights reserved
快速回復(fù) 返回頂部 返回列表
宾川县| 盐山县| 缙云县| 宜兴市| 凉城县| 武穴市| 通渭县| 改则县| 岳池县| 泰安市| 武义县| 玉山县| 卓资县| 民县| 玛多县| 平和县| 千阳县| 内江市| 临清市| 华坪县| 西丰县| 修水县| 米泉市| 嘉黎县| 建宁县| 梁河县| 琼中| 庄河市| 宝坻区| 通城县| 咸阳市| 民勤县| 西林县| 观塘区| 弥勒县| 额敏县| 东乡族自治县| 乌海市| 西安市| 浦县| 吴旗县|