Arran is therefore not unusual in that the derivation of the name is far from clear.Mac an Tàilleir (2003) states that "it is said to be unrelated to the name Aran in Ireland" (which means "kidney shaped", cf Irish ára "kidney").This granite was intruded into the Late Proterozoic to Cambrian metasediments of the Dalradian Supergroup.Other Paleogene igneous rocks on Arran include extensive felsic and composite sills in the south of the island, and the central ring complex, an eroded caldera system surrounded by a near-continuous ring of granitic rocks.
It is in the unitary council area of North Ayrshire.
There is a diversity of wildlife, including three species of tree endemic to the area.
Most of the islands of Scotland have been occupied by the speakers of at least four languages since the Iron Age, and many of the names of these islands have more than one possible meaning as a result.
The 19th century "clearances" led to significant depopulation and the end of the Gaelic language and way of life.
The economy and population have recovered in recent years, the main industry being tourism.