Concordant igneous intrusion that has a sagging, saucer-like form. The shape of small lopoliths may be controlled by their emplacement in folds, but there is no such obvious control for great lopolithic intrusions. Compare laccolith.
Lopolith
A large intrusion which sags downwards in the centre, forming a saucer-shaped mass. Wilson (1956) GSA Bull. 67, 3 interprets lopoliths as funnel-shaped in cross-section with the most basic rocks at the bottom. See O’Driscoll et al. (2006) Geology 34, 3 on the Great Eucrite intrusion of Ardnamurchan.
- Supremacy, Acts of (1534)
- supremum
- surd
- sure thing principle
- surf
- surface
- surface-accessibility shading
- surface acoustic wave
- surface area
- surface boundary layer
- surface brightness
- surface-channel FET
- surface charge density
- surface-colour map
- surface conductivity
- surface-extended X-ray absorption fine-structure spectroscopy
- surface finish
- surface flux
- surface-forces apparatus
- surface gravity
- surface insulation
- surface integral
- surface(in topology)
- surface inversion
- surface leakage