Differential glacio-isostatic uplift of crustal blocks at Glen Roy, Scotland

Auteurs :
SISSONS, J. B.
CORNISH, R.

Description :
Detailed measurements of the altitudes of the shorelines of former ice-dammed lakes in Glen Roy and vicinity in the Scottish Highlands prove erroneous the conventional view that former shorelines in areas affected by glacio-isostatic uplift are uniformly tilted and/or gently warped. The measurements demonstrate differential uplift of blocks of the earth's crust. The surfaces of some blocks have no detectable tilt whereas others have gradients up to at least 4,6 m/km and are tilted in different directions. In three areas 0.72.0 km long, shorelines are distorted by crustal movements| all these areas have landslides attributed to earthquakes that accompanied the release of stress. A relationship between crustal movement and the limit of a glacial advance is demonstrated.


Type de document :
Article de périodique

Source :
Quaternary research New York, 1982, vol. 18, n°. 3, p. 268-288, Références bibliographiques : 37 réf.

Date :
1982