fossils form in which kind of rock? sedimentary igneous metamorphic all of the above course hero

Full Answer

What types of rocks do fossils form?

In what types of rocks do fossils form? In certain conditions, and over a very long period of time, sediment becomes compacted and cemented into sedimentary rock. Fossils are more common in some kinds of sedimentary rocks than others.

Which type of rock has no fossils found?

These types of rocks are known as primary or basic rocks as this type was considered to be the first form of rock and the supply materials for other types of rocks. No fossils contain found in these types of Rock. These types of rock forms include more than one mineral deposit and these may be either glassy or coarse in nature.

What are the three types of rocks?

On the basis of the origin of rocks, they are classified into three types – Igneous rocks, Sedimentary rocks, and Metamorphic rocks. There are also a few rocks substances of organic origin sometimes they contain fossils, for example, coal, peat, etc.

Why don't all fossils form in sedimentary rocks?

That is because most limestones consist partly or mostly of the shells of organisms. Sometimes, however, the shells are worn so much that they look like sediment grains rather than "real" fossils. Fossils are also common in shales, which form from muds. Excellent imprint fossils can be formed in fine-grained sediments like muds.

Why are fossils more common in sedimentary rocks?

Fossils are more common in some kinds of sedimentary rocks than others. There are many factors that can contribute to the likelihood of an organism being preserved as a fossil. Fossils are most common in limestones. That is because most limestones consist partly or mostly of the shells of organisms. Sometimes, however, the shells are worn so much ...

What type of sediments can fossils be found in?

Excellent imprint fossils can be formed in fine-grained sediments like muds. Only some shales contain fossils, however, because many areas of muddy ocean floor had conditions that were not suitable for animal life.

What are limestone fossils made of?

That is because most limestones consist partly or mostly of the shells of organisms. Sometimes, however, the shells are worn so much that they look like sediment grains rather than "real" fossils. Fossils are also common in shales, which form from muds. Excellent imprint fossils can be formed in fine-grained sediments like muds.

Do sandstones have fossils?

Although this does happen, it is a very rare occurrence. Some sandstones contain fossils as well. Most sandstones do not contain fossils, for various reasons.