Moine Thrust Belt


Moine Thrust Belt
Moine Thrust belt defining the western edge of the Moine Supergroup outcrop

The Moine Thrust Belt is a linear geological feature in the Scottish Highlands which runs from Loch Eriboll on the north coast 190 km south-west to the Sleat peninsula on the Isle of Skye. The thrust belt is a zone between an extensive landscape of rolling hills over a metamorphic rock base to the east and more rugged, terraced mountains with steep sides sculptured from weathered igneous, sedimentary and metamorphic rocks to the west. Mountains within the belt display complicated layers and the width of the zone varies up to 10 km. Often, summits of hard rock cap softer sedimentary rock layers visible on lower slopes. Ben More Assynt, in the centre of the belt, is a typical example that rises from a glen of limestone caves up through sandstone terraces to a quartzite summit cap.

Formation

The discovery of the Moine Thrust in 1907 was a milestone in the history of geology as it was one of the first thrust belts discovered. The formation has since been re-interpreted many times. Eventually, the Moine Thrust corroborated tectonic plate theory in that, during the Caledonian orogeny of the Silurian period, Scotland was compressed as a European plate thrust westwards over a thrust fault and above the ancient Lewisian Gneiss on the Laurentian Plate.

The thrust belt defines the boundary between the Hebridean Terrane to its northwest and the Northern Highlands Terrane to its southeast.[1] The thrust carried metamorphic material over 200 km across Scotland entirely masking the geology of the previous terrane. However, small windows, such as the Assynt window and the Glen Achall imbricated thrust system, allow Geologists to estimate what the geology of Scotland was like before the Caledonian orogeny.

See also

References

  1. ^ British Geological Survey 1996 Tectonic map of Britain, Ireland & adjacent areas, Pharoah et al

Coordinates: 58°8′N 4°51′W / 58.133°N 4.85°W / 58.133; -4.85



Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Moine Thrust — Geologische Karte Südschottlands mit dem Moine Thrust (MT) als nordwestliche Begrenzung Moine Thrust ist eine geologische Decken Überschiebung im Norden Schottlands. Sie ist etwa 180 km lang und reicht vom Süden der Isle of Skye bis zum Loch …   Deutsch Wikipedia

  • Moine — is the French word for Monk. It can also stand for: Contents 1 Geography 2 Geology 3 People 4 Miscellaneous Geography …   Wikipedia

  • Moine Supergroup — Map of the distribution of the Moine Supergroup on Mainland Scotland and the Inner Hebrides The Moine Supergroup is a sequence of Neoproterozoic metamorphic rocks that form the dominant outcrop of the Scottish Highlands between the Moine Thrust… …   Wikipedia

  • North West Highlands Geopark — Knockan Crag The North West Highlands Geopark is a geopark in the Scottish Highlands. Awarded UNESCO geopark status in 2004,[1] it features some of the oldest rocks in Europe, around 3,000 million years old …   Wikipedia

  • Geology of Scotland — The geology of Scotland is unusually varied for a country of its size, with a large number of differing geological features. [Keay Keay (1994) op cit page 415.] There are three main geographical sub divisions: the Highlands and Islands is a… …   Wikipedia

  • Conival — seen from Ben More Assynt. Elevation 987 m (3,238 ft) …   Wikipedia

  • 1907 — This article is about the year 1907. Millennium: 2nd millennium Centuries: 19th century – 20th century – 21st century Decades: 1870s  1880s  1890s  – 1900s –  1910s   …   Wikipedia

  • Ben More Assynt — Infobox Mountain Name = Ben More Assynt Photo = Ben More Assynt from Conival.jpg Caption = Ben More Assynt from Conival. Elevation = 998 m (3,274 ft) Location = Assynt, SCO Range = Northwest Highlands Prominence = 835 m Ranked 26th in British… …   Wikipedia

  • Quartzite — Swan Peak Quartzite (Ordovician) ex …   Wikipedia

  • Foinaven — Infobox Mountain Name = Foinaven Ganu Mòr Photo = Foinaven from Achriesgill.jpg Caption = Foinaven seen from Achriesgill on Loch Inchard Elevation = 911 m (2,988 ft) [cite news |url=http://news.bbc.co.uk/1/hi/scotland/highlands and… …   Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.