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Regarding geological survey. Geological fieldworks observations and tectonic measurements are strenghtened by - 120 ages by zircon mineral analysis 15 ages by K/Ar method 500 whole rocks chemical analysis 1,300 whole rocks analysis for multi – elements assay - PowerPoint PPT Presentation
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Regarding geological survey Regarding geological survey Geological fieldworks observations and tectonic measurements are strenghtened by
- 120 ages by zircon mineral analysis - 15 ages by K/Ar method- 500 whole rocks chemical analysis - 1,300 whole rocks analysis for multi – elements assay- 2,500 new thin sections added to thin sections
generated by former programs also studied- 500 mineral microprobe analysis - 28.000 stream sediments and panned heavy minerals
The legend of the renewed geological map is better shaped than former
Sample of renewed geological map at 1:500,000 scaleSample of renewed geological map at 1:500,000 scale
Sample of renewed structural geology map at 1:100,000
Sample of new Sample of new geochemicalgeochemicalMap at 1:200,000 scaleMap at 1:200,000 scale
Legend of geochemicalLegend of geochemicalMap for Mn elementMap for Mn element
Are also available Are also available
• Hydrogeology
• Geomorphology,
• Metamorphism
• Distribution of ages
Other thematic maps on Other thematic maps on
Satellite imageries Satellite imageries
• JERS radar images• ASTER images
Map of the Tectono-Metamorphic Map of the Tectono-Metamorphic Domains of Madagascar Domains of Madagascar (PGRM, 2008)(PGRM, 2008)