The Islands of the Firth of Clyde are the fifth largest of the major Scottish island groups after the Inner and Outer Hebrides, Orkney and Shetland. They are situated in the Firth of Clyde between Ayrshire and Argyll and Bute. There are about forty islands and skerries. Only four are inhabited, and only nine are larger than 40 hectares. The largest and most populous are Arran and Bute. They are served by dedicated ferry routes, as are Great Cumbrae and Holy Island. Unlike the isles in the four larger Scottish archipelagos, none of the isles in this group are connected to one another or to the mainland by bridges.
Firth is a word in the English and Scots languages used to denote various coastal waters in the United Kingdom, predominantly within Scotland. In the Northern Isles, it more often refers to a smaller inlet. It is linguistically cognate to fjord, which has a more constrained sense in English. Bodies of water named "firths" tend to be more common on the Scottish east coast, or in the southwest of the country, although the Firth of Clyde is an exception to this. The Highland coast contains numerous estuaries, straits, and inlets of a similar kind, but not called "firth" ; instead, these are often called sea lochs. Before about 1850, the spelling "Frith" was more common.
Argyll and Bute is one of 32 unitary council areas in Scotland and a lieutenancy area. The current lord-lieutenant for Argyll and Bute is Jane Margaret MacLeod. The administrative centre for the council area is in Lochgilphead at Kilmory Castle, a 19th-century Gothic Revival building and estate. The current council leader is Robin Currie, a councillor for Kintyre and the Islands.
Lismore is an island of some 2,351 hectares in the Inner Hebrides of Scotland. The climate is damp and mild, with over 166 centimetres (65 in) of rain recorded annually. This fertile, low-lying island was once a major centre of Celtic Christianity, with a 6th-century monastery associated with Saint Moluag, and later became the seat of the medieval Bishop of Argyll. There are numerous ruined structures, including a broch and two 13th-century castles.
Kerrera is an island in the Scottish Inner Hebrides, close to the town of Oban. In 2016 it had a population of 45, divided into two communities in the north and south of the island.
Scalpay is an inhabited island in the Inner Hebrides of Scotland which has a population of 4.
Luing is one of the Slate Islands, Firth of Lorn, in the west of Argyll in Scotland, about 16 miles (26 km) south of Oban. The island has an area of 1,430 hectares and is bounded by several small skerries and islets. It has a population of around 200 people, mostly living in Cullipool, Toberonochy, and Blackmillbay.
Scarba is an island, in Argyll and Bute, Scotland, just north of the much larger island of Jura. The island has not been permanently inhabited since the 1960s. Until his death in 2013 it was owned by Richard Hill, 7th Baron Sandys; its owner now is Shane Cadzow who farms Luing cattle on the nearby island of Luing and grazes some of the cattle on Scarba. Kilmory Lodge is used seasonally as a shooting lodge, the island having a flourishing herd of red deer.
Dunnet Head is a peninsula in Caithness, on the north coast of Scotland. Dunnet Head includes the most northerly point of both mainland Scotland and the island of Great Britain.
Loch Eriboll is a 16 km (9.9 mi) long sea loch on the north coast of Scotland, which has been used for centuries as a deep water anchorage as it is safe from the often stormy seas of Cape Wrath and the Pentland Firth.
The Moine Thrust Belt or Moine Thrust Zone is a linear tectonic feature in the Scottish Highlands which runs from Loch Eriboll on the north coast 190 kilometres (120 mi) south-west to the Sleat peninsula on the Isle of Skye. The thrust belt consists of a series of thrust faults that branch off the Moine Thrust itself. Topographically, the belt marks a change from rugged, terraced mountains with steep sides sculptured from weathered igneous, sedimentary and metamorphic rocks in the west to an extensive landscape of rolling hills over a metamorphic rock base to the east. Mountains within the belt display complexly folded and faulted layers and the width of the main part of the zone varies up to 10 kilometres (6.2 mi), although it is significantly wider on Skye.
The geology of Scotland is unusually varied for a country of its size, with a large number of different geological features. There are three main geographical sub-divisions: the Highlands and Islands is a diverse area which lies to the north and west of the Highland Boundary Fault; the Central Lowlands is a rift valley mainly comprising Palaeozoic formations; and the Southern Uplands, which lie south of the Southern Uplands Fault, are largely composed of Silurian deposits.
Carna or Càrna is an island in Loch Sunart, an arm of the sea, close to the Ardnamurchan peninsula, on the west coast of Scotland.
The geology of the Isle of Skye in Scotland is highly varied and the island's landscape reflects changes in the underlying nature of the rocks. A wide range of rock types are exposed on the island, sedimentary, metamorphic and igneous, ranging in age from the Archaean through to the Quaternary.
The geology of Tyne and Wear in northeast England largely consists of a suite of sedimentary rocks dating from the Carboniferous and Permian periods into which were intruded igneous dykes during the later Palaeogene Period.
Loch Buie is a sea loch on the south coast of the Isle of Mull, off the west coast of Scotland. It takes the form of a deep bay opening onto the Firth of Lorn. At the head of the loch is the settlement of Lochbuie at the end of a minor road form the A849 at Ardura. There are a handful of small islands and rocky islets close to shore, the largest of which is Eilean Mor which is connected to the mainland of Mull at low tide. Nearby is Moy Castle. There are extensive shore platforms around the loch, notably on its southeastern side beneath Laggan Deer Forest.
The geology of the Isle of Man consists primarily of a thick pile of sedimentary rocks dating from the Ordovician period, together with smaller areas of later sedimentary and extrusive igneous strata. The older strata was folded and faulted during the Caledonian and Acadian orogenies The bedrock is overlain by a range of glacial and post-glacial deposits. Igneous intrusions in the form of dykes and plutons are common, some associated with mineralisation which spawned a minor metal mining industry.
The geology of Northumberland National Park in northeast England includes a mix of sedimentary, intrusive and extrusive igneous rocks from the Palaeozoic and Cenozoic eras. Devonian age volcanic rocks and a granite pluton form the Cheviot massif. The geology of the rest of the national park is characterised largely by a thick sequence of sedimentary rocks of Carboniferous age. These are intruded by Permian dykes and sills, of which the Whin Sill makes a significant impact in the south of the park. Further dykes were intruded during the Palaeogene period. The whole is overlain by unconsolidated sediments from the last ice age and the post-glacial period.
The geology of the Isle of Mull in Scotland is dominated by the development during the early Palaeogene period of a ‘volcanic central complex’ associated with the opening of the Atlantic Ocean. The bedrock of the larger part of the island is formed by basalt lava flows ascribed to the Mull Lava Group erupted onto a succession of Mesozoic sedimentary rocks during the Palaeocene epoch. Precambrian and Palaeozoic rocks occur at the island's margins. A number of distinct deposits and features such as raised beaches were formed during the Quaternary period.
Loch Don is a sea loch on the east coast of the Isle of Mull, off the west coast of Scotland. It is an intricately shaped loch opening onto the Firth of Lorn near the easternmost point of Mull. Its waters are shallow and the loch dries almost completely at low tide. The community of Lochdon sits on the A849 at the head of the loch. A minor road runs south from Lochdon and around to Grass Point at the point where the loch meets the open waters of the firth. There are both a terminal moraine and deltaic sand deposits around the northern end of the loch, a product of meltwater flow at the end of the last ice age. The shores of the outer part of the loch are formed from basalt lava flows of Palaeogene age whilst the inner parts of the loch extend across Palaeozoic basalt and also Mesozoic sedimentary rocks including Triassic sandstones and Jurassic Lias strata.
