Learner's definition of DOMINANT. 1. [more dominant; most dominant] : more important, powerful, or successful than most or all others. The university has/plays a dominant [=major] role in the local economy. Money is the dominant [=main] force in consumer societies. The company is now dominant in its market.
Shale is a fine-grained sedimentary rock that can have high porosity, yet can be nearly impermeable due to the poorly interconnected voids.hale is a fine-grained sedimentary rock that can have high porosity, yet can be nearly impermeable due to the poorly interconnected voids.
In an undeformed stack of sedimentary rocks, the oldest rocks are on the bottom and the youngest rocks are on the top. 2) The Principle of Original Continuity Sedimentary rocks are deposited in continuous sheets that may have extended some considerable distance.