Describe Two Ways a Fossil Could Be Created

Weathering by wind water and sun can destroy a fossil by wearing it away. Once buried the fossil and surrounding rock might undergo extreme pressure and heat and the fossils could melt.

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This type of fossil is formed when an organism is buried in sediment which hardens into rock After the soft parts of the animal.

. Some of the oldest fossils are those of ancient algae that lived in the ocean more than 3 billion years ago. All three were formed many hundreds of millions of years ago before the time of the dinosaurs. Casts or impressions such as foot prints can be covered by layers of sediments.

The body is usually exposed to air and water with a lot of oxygen so it decomposes rapidlyThe animal is likely to be fossilized only if it is buried soon after it dies or. Form when flowing water removes all of the original bone or. Dead animals and plants can be preserved in amber - hardened tree resin - peat bogs tar pits or in ice.

The age they were formed is called the Carboniferous Period. Once fossils are formed they might be washed away by streams moved by glaciers carried by scavengers or caught in rockslides. Minerals in the water replace the bone leaving a rock replica of the original bone called a fossil.

Other fossils especially Insects are found imbedded in ambera sticky sap from trees. Fossils can come from the Archaeaean Eon which began almost 4 billion years ago all the way up to the Holocene Epoch which continues today. The mud silt or sand hardens into rock and an impression fossil remains.

Fossils can be formed in many ways. Once buried the fossil and surrounding rock might undergo extreme pressure and heat and the fossils could melt. There are two main methods determining a fossils age relative dating and absolute dating.

If an organism completely dissolves in sedimentary rock it can leave an impression of its exterior in the rock called an external mold. Fossils can also form when water carries mineral into the mold where it hardens and forms are natural cast of the organism. Combustion of fossil fuelscoal release sox and nox which combine with H2o and create sulfuric and nitric acid - acid deposition Acid deposition falls and.

Hopes this answer helps D. Fossils are often found in quarries or other dig sites. An organism dies and is buried in water.

Relative dating is used to determine a fossils approximate age by comparing it to similar rocks and fossils of known ages. Once fossils are formed they might be washed away by streams moved by glaciers carried by scavengers or caught in rockslides. Many animals have been found preserved in ice in Siberia.

Describe two ways a fossil could be created. Here is a step by step process of how fossils form by permineralization. These types of fossils capture the activities of ancient animals.

For a soft-bodied animal to be fossilized its body must be protected from decomposition. Minerals fill in the mold recreating the original shape of the organism. Fossils also form from molds and casts.

Absolute dating is used to determine a precise age of a fossil by using radiometric dating to measure the decay of isotopes either within the fossil or more often the. Tissue leaving just an impression in sediment. 3 Show answers Another question on Social Studies.

That hardens into amber after the tree gets buried underground. After millions of years movement of the Earths crust may push the layer of sedimentary rock containing the fossil upwards towards the surface. The fossilized teeth of wooly mammoths are some of our most recent fossils.

This can happen fast with landslides. After the soft parts of the animal rot away a cavity remains. Carboniferous gets its name from.

Are organisms that become trapped in tree resin. Just like impression fossils the soil hardens to form rock preserving a trace of the animal. The bones then start to be dissolved by water seeping through the rock.

Water containing dissolved minerals infiltrates the pores in the bone or wood and deposits the minerals in the pores. Although the original matter is washed away the cast creates a near exact reproduction of the animal or plant. When paleontologists find a well-preserved fossil of a soft-bodied animal its an occasion for celebration.

Sediments bury the organism. The animals leave its footprints or scat which makes an impression in the soft mud silt or sand. Social Studies 22062019 0300.

Soft tissues quickly decompose leaving the hard bones or shells behind. Coal oil and gas are called fossil fuels because they have been formed from the fossilized remains of dead prehistoric plants and animals. Weathering by wind water and sun can destroy a fossil by wearing it away.

Some common fossil imprints are dinosaur tracks which are formed when the large animals left their tracks on the bottom of shallow seas or rivers. There are other ways that fossils can be preserved. Fossils are formed in different ways but most are formed when a plant or animal dies in a watery environment and is buried in mud and silt.

Weathering and erosion eventually wear away some of the rock exposing the fossil.

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