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Which oceanic deposit is believed to be volcanic dust blown out from volcanoes during eruptions?
- a)Terrigenous deposits
- b)Hydrogenous deposits
- c)Cosmic deposits
- d)Pelagic deposits
Correct answer is option 'C'. Can you explain this answer?
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Which oceanic deposit is believed to be volcanic dust blown out from v...
Cosmic deposits are believed to be extraterrestrial and make up less than 1% of total oceanic deposits. They are uniformly distributed on the abyssal plain and include thin glassy particles called tektites, which are thought to be volcanic dust from outer space.
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Which oceanic deposit is believed to be volcanic dust blown out from v...
Understanding Oceanic Deposits
Oceanic deposits are classified into various categories based on their origin. One particularly interesting type is the cosmic deposits, which are linked to volcanic activity.
What are Cosmic Deposits?
- Cosmic deposits are formed from materials that originate outside the Earth, including volcanic dust released during eruptions.
- When a volcano erupts, it can emit ash and fine particles into the atmosphere. These particles can be carried by wind and eventually settle into the ocean.
Characteristics of Volcanic Dust
- Particle Size: Volcanic dust consists of very fine particles that can remain suspended in the atmosphere for extended periods.
- Composition: The dust contains various minerals and elements that are characteristic of volcanic rock, such as silica, alumina, and iron oxides.
Importance of Cosmic Deposits
- Nutrient Supply: When volcanic dust settles into the ocean, it can enrich the water with nutrients, promoting phytoplankton growth, which is essential for marine ecosystems.
- Geological Record: The presence of volcanic dust in oceanic sediments helps scientists understand past volcanic activity and its impact on marine environments.
Distinguishing from Other Deposits
- Terrigenous Deposits: These are derived from land erosion and do not originate from volcanic activities.
- Hydrogenous Deposits: These form through precipitation of minerals from seawater, not related to volcanic eruptions.
- Pelagic Deposits: While they encompass a range of sediments found in the deep ocean, they do not specifically refer to volcanic dust.
In summary, cosmic deposits, particularly those from volcanic dust, play a vital role in ocean ecosystems and geological studies, distinguishing them from other deposit types.
Oceanic deposits are classified into various categories based on their origin. One particularly interesting type is the cosmic deposits, which are linked to volcanic activity.
What are Cosmic Deposits?
- Cosmic deposits are formed from materials that originate outside the Earth, including volcanic dust released during eruptions.
- When a volcano erupts, it can emit ash and fine particles into the atmosphere. These particles can be carried by wind and eventually settle into the ocean.
Characteristics of Volcanic Dust
- Particle Size: Volcanic dust consists of very fine particles that can remain suspended in the atmosphere for extended periods.
- Composition: The dust contains various minerals and elements that are characteristic of volcanic rock, such as silica, alumina, and iron oxides.
Importance of Cosmic Deposits
- Nutrient Supply: When volcanic dust settles into the ocean, it can enrich the water with nutrients, promoting phytoplankton growth, which is essential for marine ecosystems.
- Geological Record: The presence of volcanic dust in oceanic sediments helps scientists understand past volcanic activity and its impact on marine environments.
Distinguishing from Other Deposits
- Terrigenous Deposits: These are derived from land erosion and do not originate from volcanic activities.
- Hydrogenous Deposits: These form through precipitation of minerals from seawater, not related to volcanic eruptions.
- Pelagic Deposits: While they encompass a range of sediments found in the deep ocean, they do not specifically refer to volcanic dust.
In summary, cosmic deposits, particularly those from volcanic dust, play a vital role in ocean ecosystems and geological studies, distinguishing them from other deposit types.
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Which oceanic deposit is believed to be volcanic dust blown out from volcanoes during eruptions?a)Terrigenous depositsb)Hydrogenous depositsc)Cosmic depositsd)Pelagic depositsCorrect answer is option 'C'. Can you explain this answer?
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