Island group Archipelago of Gothenburg | ||
Similar Archipelago of Gothenburg, Donsö, Måseskär, Älvsborg fortress, Skansen Kronan | ||
Vinga is a small island 10 nautical miles (19 km; 12 mi) outside Gothenburg's harbour entrance in Sweden. The 19th century Vinga Lighthouse is noted, not only as a beacon in the waterway of the Swedish west coast, but also as the place where the Swedish poet laureate Evert Taube grew up. Today Vinga is a tourist attraction, with boats to and from Gothenburg harbour.
Contents
Map of Vinga, 475 45 Fot%C3%B6, Sweden
Geology
The bedrock of Vinga is mostly made up of porphyrite (porfyrit), a volcanic rock with less Silicon dioxide, SiO2, than Porphyry. The rock has a fine-grained structure, dark with lighter grains of feldspar and other minerals. The mineralogical composition of the Vinga porphyry classifies it as a monzogranite or quartz diorite. The northern part of the island contains orthopyroxene. The Vinga porphyry was created about 950 million years ago, when it penetrated the surrounding older gneiss rock.