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Jul 1, 2015 · The 5.8 magnitude earthquake that struck the commonwealth in 2011 was a wake-up call for many Virginians. Originating deep under Louisa County, the quake was felt as far north as Canada and caused significant structural damage around the state.
Sep 13, 2024 · A popular conceptual tectonic model envisages the Great Glen Fault to be part of a sinistral strike-slip system active during the mid-Silurian to early Devonian with c. 700 km of displacement.
Aug 12, 2024 · A popular conceptual tectonic model envisages the Great Glen Fault to be part of a sinistral strike-slip system active during the mid-Silurian through early Devonian with c. 700 km of displacement.
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faults (brown lines) mark the uplift of mountains, dropping of basins, and compression of geologic formations through tectonic thrusting Source: ESRI, ArcGIS Online
faults in Prince William show the boundaries of terranes accreted to Laurentia, effects of the Alleghanian orogeny and breakup of Pangea, and slumping in the Coastal Plain Source: ESRI, ArcGIS Online
US Geological Survey (USGS)UVATodayIn the middle of the 19th century, geologists identified the Great Glen as the location of an ancient fault line, detailing a normal sense of displacement of at least 1000 m of downthrow on its SE side (as reported by Kennedy 1946).
Map of the Great Glen Fault and other late Caledonian strike-slip faults in Scotland and northwestern Ireland. The Great Glen Fault is a strike-slip fault that runs through the Great Glen in Scotland. Occasional moderate tremors have been recorded over the past 150 years.
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The two mantle domains tightly bracket the fault. The lamprophyre magmas were generated at depths of at least 100 km. At the end of the Caledonian Orogeny the Great Glen Fault was a major vertical discontinuity that transected the sub-continental lithospheric mantle.