Salary for Real Estate Brokers. Real estate brokers sell real estate for other individuals. They do this for a fee, also called a commission. Real estate brokers search other similar properties to compare prices and ensure the property is being listed at a competitive price. Brokers also monitor the fulfillment of the terms of the agreement once it is made and negotiate between buyers and sellers.
Oceanic crust is predominantly made of the rock basalt. Basalt is an extrusive igneous rock (meaning it forms once lava reaches the earth's surface... or ocean floor... and cools down). It is a dark colored, grey to black rock that has a lot of iron and magnesium in it, but not a lot of silicon.
It is the floor of the oceans where oceanic crust lies. This article takes a close look at the crust of the earth that is covered by the oceans. What is the Oceanic Crust made of â Facts Oceanic crust is thin and very dense. Oceanic crust makes up just 0.01% of the mass of the earth. It has a thickness of almost 7 kilometers and it is basically made of basaltic rocks. The floor of the oceans is made up of rocks containing mainly silica and magnesium. This is why it is referred to as Sima.