Once the heavy and medium weight debris have been removed, sweep the room from top to bottom; sweep upper sills and ceilings free of dust and debris, then move down to windows and walls, finishing with a good baseboard and floor sweep.
The degree of lateral forcing of such structures is little known, however, if dyke propagation is forced too close to horizontal (e.g., via reaching a neutral buoyancy within the upper crust), a sill will form and magma is unlikely to reach the surface (Kavanagh et al. 2006).
In contrast the Capricorn Orogen and Yilgarn Craton, which are not underplated, do not possess known deposits, despite extensive sills in the upper crust.
The water column is highly stratified in the upper 1,200 m because of the sill depths of the Antilles Islands arc, which prevents the flow of deep water into the Caribbean Basin [6].
Our 'laccolith' model is chiefly supported by: (i) the geometry of the intrusion roof, (ii) the recognition of roof pendants in its axial part, and (iii) the mapping relationships between the intrusion, the associated dyke-sill network, and the upper volcanic/volcaniclastic sequences.
The East River tidal strait is divided into upper and lower sections by the Hell Gate sill where the tidal flow is restricted through a narrow passage (Marmer 1935).
A drip cap and sill pan (optional), to protect the upper and lower portions of any doorway that be exposed directly to the elements.
An upper Hamid succession includes deposits from pyroclastic density currents, sills, and dykes.
Higher in the Karoo stratigraphy, sills are emplaced in the sandstone-dominated upper Ecca and Beaufort groups and form nested saucer-shaped intrusions with individual thicknesses of about 100 m and characteristic diameters of 20 60 km.
The Schoonspruit flows largely over erodible Karoo Supergroup shales in its upper and middle reaches but also crosses a resistant dolerite sill in its lower reaches.
