Rocks and the minerals from rocks are used to make almost everything we use or buy in our modern world. Construction, medicines, electrical production, fuels, metals production, transportation pathways, electronics; all depend on rocks and minerals.
Rocks and minerals are also used as a window into Earth's history, and by examining them, we are able to discover how life has evolved, surmise the events and processes that shaped that life, and determine the age of the Earth and the solar system.
Rocks may help in building stable stone structures, such as fireplaces, bridges, and houses.
rocks and minerals
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Metamorphic rocks are useful to us because they can provide valuable information about the Earth's history, such as past tectonic events and the conditions under which they formed. They also have various industrial uses, including as building materials, in the production of ceramics, and as decorative stones. Additionally, some metamorphic rocks contain valuable minerals and ores that can be economically significant.
In classifying rocks, there are many properties that can be useful. In my opinion, either color or texture is most useful in classifying a rock or mineral.
ores are rocks that are mined
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slate and marble
Radiometric dating is least useful for dating sedimentary rocks because they are formed from the accumulation of sediments, making it difficult to determine the original isotopic composition.
In order to be useful in determining the relative ages of rocks, an indicator must provide different indications for rocks of different ages, right? So how could something which doesn't change over time be useful?
It is not useful in dating rocks. Only organic substances in terrestrial conditions. No carbon in rocks.