percentage of clay in the rock at the cretaceous/paleogene boundary differ from that found in the surrounding rocks? group of answer choices

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07-12-2022
Geography

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percentage of clay in the rock at the cretaceous/paleogene boundary differ from that found in the surrounding rocks? group of answer choices

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akursharma9034 akursharma9034 · Answer 1 · 2022-12-10T00:09:41-05:00

The majority of the earth's crust has relatively little iridium, however it can be found in meteorites. 30% more iridium is present in the clay layer than in the nearby rock.

The majority of clay minerals are white or light in colour, however natural clays come in a variety of hues due to impurities, like a reddish or brownish hue brought on by trace levels of iron oxide. The first ceramic substance is clay. Although iron substitutes for aluminum and magnesium to variable degrees, and significant amounts of potassium, sodium, and calcium are frequently found, clay minerals are primarily made of silica, alumina or magnesia or both, and water. Because it contains minerals necessary for plant growth, clay is a crucial component of soil. Sculpting using clay is another method. Plasticity is one of clay's qualities. This indicates that the clay can be stretched out without tearing or breaking. Since it doesn't need a kiln, air dry clay is ideal for individuals who are just starting out in pottery making. It's also great for hand building and making pottery at home.

Learn more about clay layer here

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