Question

5. Why Some on Igneous rocks dard and other light ?.

6. What are the 3 major types of sedimentary rocks?.



Earth Science.

Answer 1

5) The different elements present in the different igneous compositions will form different minerals. Rocks with high amounts of iron (Fe) tend to form minerals that are dark in color (such as olivine and pyroxene). As result, mafic rocks tend to be dark in color and felsic rocks tend to be lighter in color.

6) There are three different types of sedimentary rocks: clastic, organic (biological), and chemical. Clastic sedimentary rocks, like sandstone, form from clasts, or pieces of other rock.

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