English: Road Cutting The rock faces exposed when the new A838 was built have become a mecca for geologists because they show the relationships of the different types of rock in the Lewisian. The oldest rock is the striped grey Badcallian gneiss, which is 2700 to 3000 million years old. Between 2400 and 2200 million years ago these grey rocks were intruded by dykes of black igneous rock, known as Scourie dykes. These rocks were later deformed and again intruded by coarse pink granites and pegmatites, themselves deformed during the Laxfordian event of 1900 to 1700 million years ago.
Ова и друге слике снимљене у близини на: OpenStreetMap
58.389890; -5.024600
Лиценцирање
This image was taken from the Geograph project collection. See this photograph's page on the Geograph website for the photographer's contact details. The copyright on this image is owned by Anne Burgess and is licensed for reuse under the Creative Commons Attribution-ShareAlike 2.0 license.
да делите – да умножавате, расподељујете и преносите дело
да прерађујете – да прерадите дело
Под следећим условима:
ауторство – Морате да дате одговарајуће заслуге, обезбедите везу ка лиценци и назначите да ли су измене направљене. Можете то урадити на било који разуман манир, али не на начин који предлаже да лиценцатор одобрава вас или ваше коришћење.
делити под истим условима – Ако измените, преобразите или доградите овај материјал, морате поделити своје доприносе под истом или компатибилном лиценцом као оригинал.
== {{int:filedesc}} == {{Information |description={{en|1=Road Cutting The rock faces exposed when the new A838 was built have become a mecca for geologists because they show the relationships of the different types of rock in the Lewisian. The oldest rock