Arran is a popular destination for geologists , who come to see intrusive igneous landforms such as sills and dykes as well as sedimentary and metasedimentary rocks ranging in age from Precambrian to Mesozoic .
p297\/301 The island is a popular destination for geologists , who come to see intrusive igneous landforms such as sills and dykes as well as sedimentary and metasedimentary rocks ranging in age from Precambrian to Mesozoic .