Glarus thrust
Tomb Geological thrust fault displaying Alpine overthrust examples
The Glarus thrust is a classic Alpine tectonic fault exposed in the Swiss Alps, studied by geologists; hikers and students visit roadside outcrops and interpretive points in the Canton of Glarus.
The Glarus thrust is a major geological overthrust in eastern Switzerland where older rock units have been pushed over younger formations, forming a classic tectonic contact. The feature is a central element of the Swiss Tectonic Arena Sardona, a UNESCO World Heritage landscape.
Recognition of the overthrust in the 19th century contributed to the development of modern structural geology; subsequent mapping and study established the scale and significance of the tectonic transport in the Alps. Today the region is protected for its scientific and educational value.
The thrust and its classic exposures occur in the Glarus Alps in southeastern Switzerland, visible from the Linth Valley and surrounding mountain routes near the town of Glarus and in the Sardona range.
- UNESCO inscription: Part of the Swiss Tectonic Arena Sardona UNESCO World Heritage site, the thrust provides textbook exposures used in geological education and research.
- Access notes: Visible rock contacts can be reached from marked hiking trails and mountain passes; seasonal conditions and mountain terrain affect accessibility.
What to See #
- Glarus thrust outcrops: Classic outcrops and cliff exposures in the Glarus Alps where older Permian and Mesozoic rocks are juxtaposed by the thrust, providing clear field evidence of large-scale tectonic transport.
- Martinsloch and Sardona range: The Martinsloch and surrounding Sardona range, an iconic part of the tectonic arena noted for its distinct rock formations and scenic mountain routes.
Tips for Visiting Glarus thrust #
- Plan your visit in summer (June-September) when the marked trails and road access across the Tectonic Arena Sardona are most reliable-many routes are snowbound outside those months.
- Base yourself in Glarus or nearby Flims/Elm and pick up the UNESCO Tectonic Arena Sardona maps from local tourist offices; these maps identify the recognized outcrops and the best vantage points for the Glarus thrust.
- Join a guided geological walk or consult the local visitor centres for the interpretive trails: casual passersby frequently miss the specific outcrops and explanatory panels that make the thrust's significance clear.
Best Time to Visit Glarus thrust #
Summer (June-September) is the best time to visit the Glarus thrust area when trails and outcrops are most accessible.
Weather & Climate near Glarus thrust #
Glarus thrust's climate is classified as Tundra - Tundra climate with cold summers (peaking in August) and freezing winters (coldest in February). Temperatures range from -13°C to 7°C. Abundant rainfall (1865 mm/year), wettest in July, distributed fairly evenly throughout the year.
January
January is freezing with highs of -7°C and lows of -12°C. Significant rainfall (154 mm), partly cloudy skies, and breezy conditions.
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February
February is the coldest month with highs of -7°C and lows of -13°C. Significant rainfall (135 mm), partly cloudy skies, and breezy conditions.
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March
March is freezing with highs of -6°C and lows of -12°C. Significant rainfall (152 mm), partly cloudy skies, and breezy conditions.
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April
April is freezing with highs of -5°C and lows of -10°C. Significant rainfall (152 mm) and mostly overcast skies.
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May
May is freezing with highs of -1°C and lows of -5°C. Significant rainfall (130 mm) and mostly overcast skies.
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June
June is cold with highs of 3°C and lows of -2°C. Significant rainfall (167 mm) and mostly overcast skies.
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July
July is cold with highs of 6°C and lows of 0°C. The wettest month with heavy rain (191 mm) and partly cloudy skies.
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August
August is cold with highs of 7°C and lows of 1°C. Significant rainfall (176 mm) and partly cloudy skies.
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September
September is cold with highs of 4°C and lows of -1°C. Significant rainfall (151 mm) and partly cloudy skies.
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October
October is freezing with highs of 1°C and lows of -4°C. Significant rainfall (136 mm) and partly cloudy skies.
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November
November is freezing with highs of -4°C and lows of -9°C. Significant rainfall (158 mm), partly cloudy skies, and breezy conditions.
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December
December is freezing with highs of -5°C and lows of -11°C. Significant rainfall (163 mm), partly cloudy skies, and breezy conditions.
