110 likes | 229 Views
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
E N D
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 structural geology map at 1:100,000
Sample of new geochemical Map at 1:200,000 scale
Legend of geochemical Map for Mn element
Are also available • Hydrogeology • Geomorphology, • Metamorphism • Distribution of ages Other thematic maps on Satellite imageries • JERS radar images • ASTER images
Map of the Tectono-Metamorphic Domains of Madagascar (PGRM, 2008)