Geology Under Lloydminster
Preliminary Sketch
Note: There are various concepts as to what one would see at a depth of
700 meters under Lloydminster. One is that a layer of salt dissolved and the
overlying sediments collapsed into this space giving a very uneven, broken area with many
traps in which the oil accumulated. The overburden of rock referred to is described as
unconsolidated - that is more like compressed sand than sandstone. Another theory,
not necessarily entirely contradictory, says the best way to describe the oil reservoir
area is to imagine a landscape of an ancient river valley. The river in that valley
was wide and meandering, filled with oxbow lakes, and sand bars. Where the sand
accumulated later became the home of the oil reservoirs from which we produce today.
In any event, below is a preliminary sketch suggesting something of the geology in the oil
reservoir area.
For a surface down depiction - click here.
