Q:

What is sedimentation?

A:

In geological sciences, sedimentation is the process of accumulating sediments, or dirt, on the reef. It is a natural phenomenon that results from land and reef erosion. Broadly defined, it also encompasses glacial ice deposits and accumulation of materials due to gravity, such as talus deposits and rock debris collection at the base of cliffs.

Soil decomposition, plant decomposition, animal decomposition and bedrock erosion are natural sources of sediments transported to the oceans. Sediments often add nutrients to the soil. Natural sediment mobilization helps develop and maintain coastal habitats, such as mangroves, coral reefs, estuaries, lagoons and wetlands. However, many human activities often alter the process of sedimentation and erosion. High sedimentation destroys corals when sediments land directly on top of corals, smothering the corals. Corals are not capable of removing sediments, because they cannot move. Sedimentation is sometimes detrimental to corals, mainly because it affects water clarity and makes the water cloudy or turbid. When there is high turbidity, the amount of light that reaches the corals is considerably decreased. With lesser light, corals find it difficult to photosynthesize. Human activities are major culprits in the increase of sedimentation rates along many coastline areas. These activities are mainly related to poor land management practices, such as unregulated use of off-road vehicles and poor urban development.


Is this answer helpful?

Similar Questions

  • Q:

    What makes a continent?

    A:

    A continent is a large land mass on Earth that is distinguished by a separation from other land by water or by a distinct cultural difference. Earth has a total of seven continents: North America, South America, Europe, Africa, Asia, Australia and Antarctica.

    Full Answer >
    Filed Under:
  • Q:

    How does an artesian well form?

    A:

    Artesian wells form when water flows through a permeable rock from a higher area to the area of the well. Artesian wells produce water flow without any additional pumping because of the water pressure in the rock, so they require a layer of impermeable rock beneath the permeable rock to block the flow downward. Thus, when a well is dug into the permeable rock, the water flows out under pressure.

    Full Answer >
    Filed Under:
  • Q:

    How do beaches form?

    A:

    A beach is any type of landform that lies along the shoreline of a body of water. The shoreline of a beach is formed naturally by the geographical end of the body of water, but the sand on the beach is formed over many years.

    Full Answer >
    Filed Under:
  • Q:

    How deep is the Grand Canyon?

    A:

    The Grand Canyon averages a depth of about 4,000 feet for its 277-mile length. At its deepest point, it is 6,000 feet deep. At its widest point, it is 18 miles across.

    Full Answer >
    Filed Under:

Explore