Question

What is the historical significance of silicates on the Earth's crust

Answer 1

Answer:

Silicates. The silicates, owing to their abundance on Earth, constitute the most important mineral class. Approximately 25 percent of all known minerals and 40 percent of the most common ones are silicates; the igneous rocks that make up more than 90 percent of Earth's crust are composed of virtually all silicates.

Answer 2

The percent of these elements in the earth's crust is illustrated below. As you can see, oxygen and silicon are the most abundant elements in the earth's crust. These two elements combine to form the most common mineral group, the silicates, accounting for more than 90 percent of the earth's crust.

Because most of earth (on the inside) is composed of silicate minerals, so when partial melting occurs and crust is created (and however they decided how continents are created) the only minerals that can form are silicate (and sometimes the volatiles in a melt will form their own minerals, like sulfur- which is where a lot of ores come from). Basically the answer is just that earth is mostly composed of silicate minerals on the inside, and any (excluding sedimentary minerals like calcite and salts) thing on earths surface came from the interior, so it must be composed of silicate minerals as well. Hard to explain it any further without going into bowens reaction series and the primordial partial differentiation of Earth, both of which you could write multiple papers about their various aspects and implications into geology.

Explanation:

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