Editing Hydrogeology of Burkina Faso

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|Birimian volcano-sedimentary and plutonic rocks; Eburnean granitoid rocks.
 
|Birimian volcano-sedimentary and plutonic rocks; Eburnean granitoid rocks.
 
||Precambrian
 
||Precambrian
||Basement complex of Archaean and Birimian age, consisting of belts of Birimian volcano-sedimentary and plutonic rocks intruded by large batholiths of Eburnean granitoid rocks. It includes basalt, andesite, rhyolite, rhyodacite, dacite, felsic tuffs, gabbro, diorite, granites, gneisses, shales, schists, quartzites and greenstones (Castaing et al., 2003b).  
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||Basement complext of Archaean and Birimian age, consisting of belts of Birimian volcano-sedimentary and plutonic rocks intruded by large batholiths of Eburnean granitoid rocks. It includes basalt, andesite, rhyolite, rhyodacite, dacite, felsic tuffs, gabbro, diorite, granites, gneisses, shales, schists, quartzites and greenstones (Castaing et al., 2003b).  
 
||Two major north-north-east-trending sinistral shear zones divide the Basement rocks into three domains: eastern, central and western, with variably north-east or north to north-north-east-trending  structural features (Castaing et al., 2003b).  
 
||Two major north-north-east-trending sinistral shear zones divide the Basement rocks into three domains: eastern, central and western, with variably north-east or north to north-north-east-trending  structural features (Castaing et al., 2003b).  
 
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