Siliceous duricrusts as palaeoclimatic indicators: evidence from the Kalahari desert of Botswana

Agriculture & Biology

• bedrock 41%
• Botswana 77%
• cement 30%
• chemical composition 22%
• chemistry 52%
• environmental factors 18%
• geochemistry 47%
• Kalahari Desert 100%
• microstructure 25%
• mineral content 28%
• mineralogy 42%
• sampling 20%
• sand 24%
• sediments 26%
• Southern Africa 32%
• weathering 35%
• wet environmental conditions 38%

Earth & Environmental Sciences

• analysis 1%
• bedrock 6%
• cement (construction material) 5%
• chemical composition 5%
• coastal zone 6%
• desert 48%
• duricrust 89%
• environmental conditions 5%
• geochemistry 5%
• indicator 34%
• material 5%
• micromorphology 9%
• mineral 4%
• mineralogy 6%
• sand 4%
• sediment 3%
• silcrete 89%
• Southern Africa 7%
• weathering profile 9%