05.07.2009

A type of coal that is dull black and has less moisture than lignite. Subbituminous is generally used to produce steam for electricity generation

Variety of sandstone in which 25% percent of the sand grains are composed of feldspar

Sorry, this entry is only available in עברית.

A term used to describe the overall relationship of rock masses e.g. folding, faulting, unconformities

A trap in reservoir rock which has been formed by the deformation (folding or faulting) of the rock layer. There are three basic forms of a structural trap in petroleum geology: anticline trap, fault trap and salt dome trap all of which result in barriers which form traps

Term used to refer to the structural reform in the electricity sector enacted by the government

Series of electric logs that illustrate subsurface structure by placing the logs relative to sea level.