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The 547±7Ma old Achas intrusion (Damara orogen, Namibia) includes magnesian, metaluminous to slightly peraluminous, calcic to calc-alkalic granodiorites and ferroan, metaluminous to slightly peraluminous, calc-alkalic to alkali-calcic leucogranites. For the granodiorites, major and trace element variations show weak if any evidence for fractional crystallization whereas some leucogranites are highly...
The 556±4Ma-old Bloedkoppie granite (Central Damara orogen, Namibia) is a metaluminous to slightly peraluminous, alkali-calcic to calc-alkalic and ferroan granite. Its composition implies high-temperature, reduced, and anhydrous conditions during granite formation. The granite is fractionated, but heterogeneous radiogenic isotope data (87Sr/86Sr(init.): 0.712 to 0.727; εNd(init.): −7.2 to −13.1; 206...
Major and trace element and Nd, Sr, O and Pb isotope data from granites of the high-grade central part of the Damara orogen (Khan and Outlet gorge areas, Namibia) indicate a dominantly lower crustal origin. Based on their appearance in field, the granites can be divided into red granites, white granites and grey granodiorites. Red granites and some of the white granites from the Khan area are isotopically...
Mineral chemistry combined with Sm-Nd garnet-whole rock and U-Pb monazite ages provides important constraints on the geological history of metapelites, migmatites and granites from the high-grade basement-dominated part of the Damara orogen (Namibia). Based on thermobarometric data, the peak of regional metamorphism reached c. 700-750 o C and c. 5 kbar. U-Pb monazite and Sm-Nd garnet mineral...
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