regarding geological survey

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)