Loch Scridain

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Loch Scridain
Loch Scridain from Knockan - geograph.org.uk - 973461.jpg
View from Knockan
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Loch Scridain
Location Isle of Mull, Scotland
Coordinates 56°21′59″N6°05′03″W / 56.36639°N 6.08417°W / 56.36639; -6.08417 Coordinates: 56°21′59″N6°05′03″W / 56.36639°N 6.08417°W / 56.36639; -6.08417
Basin  countriesUnited Kingdom

Loch Scridain is a 15-kilometre-long (9-mile) sea loch, with a west-south west aspect, on the western, or Atlantic coastline of the Isle of Mull, in the Inner Hebrides, Argyll and Bute, Scotland. [1]

Contents

Geography

Loch Scridain extends inland as far as the island's only Munro and extinct volcano, Ben More, a large massif on the Ardmeanach peninsula to the north; the imposing Bearraich hill overlooks the mouth of the loch. To the south is the Ross of Mull, the longest peninsula on Mull, that reaches past the sea loch boundary into the Atlantic. Near the head of Loch Scridain is the Aird of Kinloch, a small peninsula that almost separates the main loch from the small inner sea loch, Loch Beg. Loch Beg is fed by the River Coladoir.

Seabank Villa on the lochside at Kilfinichen Bay is the type locality for the mineral mullite. [2]

Settlements

Loch Scridain has three settlements, Tiroran, Kilfinichen, and Pennyghael, with a total population of about 60. The A849 to Bunessan and Fionnphort runs along the southern shore of the loch and there is a turn off in Pennyghael to Carsaig Bay.

Geology

Loch Scridain to the Ardmeanach peninsula is a lava landscape in which the lava flows have created a layered effect. Basalt lava is rich in minerals and the land between the crags is green and fertile. There is black basalt, stained orange in places. The orange colour represents the top surfaces of the flow, weathered by the tropical climate of 60 million years ago. There is a fossil tree, with a cave to its right, a large boulder on the shore just below, and a small area of columnar basalt on its left. The cast of the tree is a hollow half-cylinder about 1.2 m (4 ft) wide, starting just above ground level. Just beyond the tree, there is a black sand beach, and there are in the basalt shoreline slab some older boulders overwhelmed by the lava flow of 60 million years ago.

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Tiroran Human settlement in Scotland

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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. Numerous caves are located at the rear of this platform including Uaimh nan Taillearan. Sandy beaches lie at the head of the loch. The cliffs at either side are formed from basalt lava flows of Palaeogene age, intruded by numerous dolerite dykes. At the head of the loch, the rocks include granophyres and gabbro. Though unseen at the surface, the Great Glen Fault is usually considered to run beneath this loch and nearby Loch Spelve.

Geology of the Isle of Mull

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.

References

  1. "Loch Scridain". The Gazetteer for Scotland. Royal Scottish Geographical Society . Retrieved 13 August 2011.
  2. "Mullite". Mindat.org. Retrieved 22 October 2012.