Ocean Sediments

Front

What are biogenous sediments?

Back

Sediments made from microscopic shells that settle to the bottom when the organisms that produced them die.

Front

What are the four main types of ocean sediments?

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1. Lithogenous 2. Biogenous 3. Hydrogenous 4. Cosmogenous

Front

Which type of sediment is formed from the weathering of rocks?

Back

Lithogenous sediments.

Front

What type of sediment is derived from the remains of marine organisms?

Back

Biogenous sediments.

Front

What are hydrogenous sediments?

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Sediments that precipitate directly from seawater, often containing minerals.

Front

What are cosmogenous sediments?

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Sediments that originate from extraterrestrial sources, such as meteorites.

Front

What is the difference between terrigenous and lithogenous sediments?

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Terrigenous sediments are derived from land, while lithogenous sediments specifically refer to those formed from the weathering of rocks.

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What is the significance of tektites in sediment classification?

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Tektites are examples of cosmogenous sediments, formed from the impact of meteorites.

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How does the proportion of biogenous sediment differ between deep ocean and continental-shelf sediment?

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Deep ocean sediments tend to have proportionally more biogenous sediment than continental-shelf sediment.

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What is the primary source of silt in ocean sediments?

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Silt primarily comes from the erosion of land and the breakdown of larger particles.