What are ocean deposits?

By Ritesh|Updated : September 6th, 2022

Marine sediments come from different sources and settle on the ocean floor. Unconsolidated sediments, originating from various sources deposited on the bottom of the sea, are included in oceanic sediments. The study of oceanic (marine) deposits involves considering sediment types, sources, modes of transport, horizontal distribution, lithological succession, vertical variations in their distribution and composition, etc.

Types and Classification of Ocean Deposits

Rivers, winds, etc., carry sediments to the oceans created by the weathering and erosion of terrestrial rocks. Volcanic eruptions also produce deposits.

  • The deposition of sediments is also aided by the breakdown and decay of marine life, including plants and animals.
  • Marine sediments come in four types: lithogenic, biogenic, hydrogenic, and cosmogenic.
  • Sedimentary rocks are the only rock that can hold fossils.
  • In other words, they are proof of a previous existence.

Marine deposits are divided into many types based on sediments and location:

Classification based on residues:

  • Pelagic - open sea, not near the coast. Red Clay, Radiolarian Slime, Diatom Slime, Pteropod Slime, and Globigerina Slime.
  • Seaside - close to the shore. Gravel, sand, mud.
  • Hemipelagic- between littoral and pelagic.
  • Eupelagic - the highest point in the ocean zone, located above the mesopelagic area, where sufficient sunlight is received.
  • Slimes from radiolarians, globigerina, pteropods, and red clay.

Classification by location:

  • Continental
  • Neritic- shallow sea
  • Pelagic - Deep sea


What are ocean deposits?

Marine sediments are deposited on the ocean floor and originate from various sources.

  • Oceanic sediments contain loose sediments that have been deposited on the ocean floor from a variety of sources.
  • Depending on the sediments and the location, there are numerous types of marine deposits:
  • Sediment-based classification Pelagic means to live far from land.


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