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.
Sedimentary rocks are the most prevalent rock type exposed on the Earth's surface, created from other materials derived from exposed and weathered igneous, metamorphic or previously structured sedimentary rocks, or biological sedimentation, and compacted into a solid, self-adherent mass.edimentary rocks are the most prevalent rock type exposed on the Earth's surface, created from other materials derived from exposed and weathered igneous, metamorphic or previously structured sedimentary rocks, or biological sedimentation, and compacted into a solid, self-adherent mass.