نتایج جستجو برای: migmatite
تعداد نتایج: 114 فیلتر نتایج به سال:
The Conlara Metamorphic Complex, the easternmost complex of Sierra de San Luis, is a key unit to understand relationship between late Proterozoic-Early Cambrian Pampean and Upper Cambrian-Middle Ordovician Famatinian orogenies Eastern Sierras Pampeanas. Complex extends east foothills Comechingones west up Río Guzmán shear zone. main rock types CMC are metaclastic metaigneous rocks that intruded...
This study aimed at the geological and geospatial mapping of flood vulnerable areas in Ganaja, Lokoja metropolis for proper mitigation. The area involved taking several traverses understudying different rock types area. Rocks identified are porphyritic granite, migmatite, augen gneiss, aplitic medium-grained pegmatitic intrusions quartzo-feldspathic veins, banded gneiss biotite gneiss. Fracture...
The Rb-Sr whole-rock isochron, age 1636 ± 66 Ma of Mirgarani granite, is the one oldest granite dated in northwestern part Chhotanagpur Granite Gneiss Complex (CGGC). initial Sr ratio 0.715 0.012 (MSWD = 0.11), showing an S-type affinity. has intruded migmatite complex Dudhi Group and forms formation comparable to granites Bihar Mica Belt around Hazaribagh (1590 30 Ma). present studies have est...
Abstract Outcrop mapping as well electromagnetic and ground magnetic surveys was carried out within Auchi Igarra localities in order to attempt an interpretation of the geology areas delineate boundary between basement sedimentary terrains. Geologic done by collecting samples outcrops at five different locations areas. Three lithofacies were identified area they are basal shale unit, tabular cr...
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