Report on the Geological Survey Dept |
Otras ediciones - Ver todas
Términos y frases comunes
Accra adit Akwapimian amphibolite aplite Apollonian argillaceous Ashanti bands banket bedrock beds biotite biotite-gneiss biotite-granite Birrimian phyllites Birrimian rocks boreholes Cape Coast clay coarse conglomerate deposits depth district Dixcove drilling dyke east Effia Elmina examined exposed fault felspar fine-grained fissure folding foliation geological mapping Geological Survey Geologist gneiss Gold Coast grained granite granodiorite gravel greenstone grey greywackes grit hills hornblende inches interbedded intrusion investigations Junner Kumasi limestone Lower Birrimian manganese mica miles mineral mudstone Nkwanta north-east north-west obtained occur outcrops pebbles pegmatite phyllites pink pits porphyritic prospecting pyrite quartz quartz veins quartzites railway reef ridge river road samples sand sandstone sandy schist sediments Sekondi shaft shales sheared south-east south-west specimens STANFORD stream strike surface Takoradi Tarkwa Tarkwaian thin trench trend tuffs underlain Upper Birrimian valley vertical village Voltaian water supply weathered Winneba yield zone