Fossil record formation by sedimentation

Sedimentation in fossilization:
Sedimentary rocks, formed on or close to the Earth’s surface, contain most of the common fossils. The fragmentation of pre-existing rock and accumulation of particles results in the formation of sediments. Climatic change or continent movement over time is evident by the presence of thousands of sedimentary layers.

The most common condition in fossilization is the presence of a dead organism’s skeleton or shell (hard parts), followed by rapid burial.

Don't use plagiarized sources. Get Your Custom Essay on
Fossil record formation by sedimentation
Just from $13/Page
Order Essay

Before the organism decays or disintegrates, it must settle in a position where it gets a good chance of being buried.

If it is unsuccessful, then aerobic bacteria start degrading the organism’s soft tissue and leave the rubble, i.e., the exoskeleton.

The exoskeleton is then preserved by the steady supply of sediments from lakes, delta rivers, and earth parts below the sea level as it contains a high percentage of minerals

Sedimentation at the lake or sea bottom serves as an ideal place for fossilization as it protects the rubble from damage and rapidly covers it over a long time. It also helps to eliminate the predators and solvent water to protect the tissues and debris.

Steno’s law or the Law of Superposition says that the oldest sedimentary layer (bed) lies at the bottom and the newest one on the top in an undisturbed manner.

Sedimentary rock formation:
Sedimentation on or close to the Earth’s surface due to compression or other geological processes creates three different types of rocks: (i) Sedimentary rocks, (ii) Igneous rocks, and (iii) Metamorphic rocks.

Weathering, erosion, precipitation, dissolution, and lithification are the geological processes that lead to the formation of a sedimentary rock near the surface of the Earth.

The raw materials for sedimentary rock formation are created by breaking down the large rocks into minor ones because of rain and wind. Weathering and erosion then convert the mountains and boulders into sand or mud sediments. Thirdly, chemical weathering makes the water slightly acidic and slowly removes the stone.

Two other geological processes, precipitation and lithification, build minerals or new rocks. Chemicals from the acidic water are precipitated out, which leads to the formation of minerals and rocks.

At last, sand, clay, and other sediments are compacted slowly into rocks due to the lithification process under the ocean or other water bodies.

Categories and structures of sedimentary rocks:
Sedimentary rocks are categorized into detrital, chemical, and organic rocks.

1. Detrital rock: This kind of rock is formed mechanically due to erosion and rock fragments accumulation. The sediments and organic matter from the decayed plants and animals are compressed over a long time and grouped as detritus. Inorganic detrital rocks, such as sandstone, are formed from the broken pieces of other rocks.

2. Chemical rock: This kind of rock is formed due to the precipitation of certain chemicals such as calcium carbonate and is found in caves, deserts, and oceans. Limestone, stalagmite, and stalactite are the different types of chemical rocks formed.

3. Organic rocks: Organic rocks are produced due to the accumulation of biological debris in bogs and swamps, as well as from an organism’s remains.

The sedimentary structure provides information on how and where sedimentation occurs and provides the geologic history of an area. It is produced during the deposition of sediments or just after that. Bedding is the most common sedimentary structure that contains a series of layers visible within a rock. Crossbedding is a kind of sedimentary structure that is common in sandstones. It consists of a thin, inclined layer within a horizontal rock bed. Ripple marks are the sediment layers formed by moving water or wind.

Assignment Help Guys
Calculate your paper price
Pages (550 words)
Approximate price: -

Why Work with Us

Top Quality and Well-Researched Papers

We always make sure that writers follow all your instructions precisely. You can choose your academic level: high school, college/university or professional, and we will assign a writer who has a respective degree.

Professional and Experienced Academic Writers

We have a team of professional writers with experience in academic and business writing. Many are native speakers and able to perform any task for which you need help.

Free Unlimited Revisions

If you think we missed something, send your order for a free revision. You have 10 days to submit the order for review after you have received the final document. You can do this yourself after logging into your personal account or by contacting our support.

Prompt Delivery and 100% Money-Back-Guarantee

All papers are always delivered on time. In case we need more time to master your paper, we may contact you regarding the deadline extension. In case you cannot provide us with more time, a 100% refund is guaranteed.

Original & Confidential

We use several writing tools checks to ensure that all documents you receive are free from plagiarism. Our editors carefully review all quotations in the text. We also promise maximum confidentiality in all of our services.

24/7 Customer Support

Our support agents are available 24 hours a day 7 days a week and committed to providing you with the best customer experience. Get in touch whenever you need any assistance.

Try it now!

Calculate the price of your order

Total price:

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.

Our Services

No need to work on your paper at night. Sleep tight, we will cover your back. We offer all kinds of writing services.


Essay Writing Service

No matter what kind of academic paper you need and how urgent you need it, you are welcome to choose your academic level and the type of your paper at an affordable price. We take care of all your paper needs and give a 24/7 customer care support system.


Admission Essays & Business Writing Help

An admission essay is an essay or other written statement by a candidate, often a potential student enrolling in a college, university, or graduate school. You can be rest assurred that through our service we will write the best admission essay for you.


Editing Support

Our academic writers and editors make the necessary changes to your paper so that it is polished. We also format your document by correctly quoting the sources and creating reference lists in the formats APA, Harvard, MLA, Chicago / Turabian.


Revision Support

If you think your paper could be improved, you can request a review. In this case, your paper will be checked by the writer or assigned to an editor. You can use this option as many times as you see fit. This is free because we want you to be completely satisfied with the service offered.

error: Content is protected !!
Open chat
Need assignment help? You can contact our live agent via WhatsApp using +1 718 717 2861

Feel free to ask questions, clarifications, or discounts available when placing an order.