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Flashcards in Seafloor Sediments Deck (19):
1

What are the four marine sediments?

Lithogenous, Hydrogenous, Biogenous, and Cosmogenous

2

Lithogenous sediments are?

Sediments derived from preexisting rock materials.

3

Lithogenous sediments are also called ___________ because most Lithogenous sediments come from landmasses

Terrigenous

4

Lithogenous sediments begins as?

rocks on continents or islands

5

Eroded material is carried to oceans by

Streams, wind, glaciers, and gravity

6

80% of lithogenous sediments are provided by what continent

Asia

7

The greatest amount of lithogenous sediment is found?

along beaches and at the continental margin

8

Rock fragments, Quarts sand, Quarts silt, Clay, and Volcanic ash are examples of which type of sediment

Lithogenous

9

Calcareous ooze, Shell/Coral fragments, and Siliceous ooze are examples of which type of sediment

Biogenous

10

Manganese nodules, Phosphorite, Oolites, Metal sulfides, and Evaporites are examples of which type of sediment?

Hydrogenous

11

Iron nickel spherules, Tektites, Iron nickel meterorites, and Silicate chondrites are examples of which type of sediment

Cosmogenous

12

Calcareous ooze comes from

Coccolithophores and Foraminifers

13

Siliceous ooze comes from

Diatoms and Radiolarians

14

Hydrogeneous sediments are

Precipitation of dissolved materials from sea water due to chemical reactions

15

Biogenous sediments

Broken down bits of of organisms like teeth and bones

16

The two most common chemical compounds in biogenous sediments are

Calcium Carbonate and and Silica

17

Marine Snow is:

Made up of organic matter, dead sea creatures, tiny shells, dust and minerals.

18

Sediments can be classified by size. The types of sediment, from smallest to largest are?

Clay, Silt, Sand, Gravel, Boulders

19

What mineral is abundant but has yet to be commercially exploited in the pacific?

Manganese Nodules