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Flashcards in Ocean Bottom sediments Deck (40):
1

List sediment size smallest to largest

clay

2

List sediment size smallest to largest

clay

3

3 sources of sediment

lithogenous
biogenous
hydrogenous

4

What are lithogenous sediments

produced by weather rock

5

What is the sediment accumulation of river deltas

>800 cm/year

6

What is the sediment accumulation of estuaries and bays

0.5 cm/year

7

What is the sediment accumulation of continental shelf and slope

10-40 cm/1000years (0.001-0.004 cm/year)

8

What is the sediment accumulation of the deep ocean

9

How do sediments travel

by currents and wind
also by glaciers

10

How do sediments travel

by currents and wind
also by glaciers

11

3 sources of sediment

lithogenous
biogenous
hydrogenous

12

What are lithogenous sediments

produced by weather rock

13

What is the sediment accumulation of river deltas

>800 cm/year

14

What is the sediment accumulation of estuaries and bays

0.5 cm/year

15

What is the sediment accumulation of continental shelf and slope

10-40 cm/1000years (0.001-0.004 cm/year)

16

What is the sediment accumulation of the deep ocean

17

Describe the sediment depth in the deep ocean

near center, little build up due to melting rock
build up farther from center (closer to shore)

18

How do sediments travel

by currents and wind
also by glaciers

19

How does size of sediment effect travel

smaller the particle the farther it travels

20

What plant contributes to siliceous oozes

diatoms

21

What are biogenous sediments

produced by marine animals and plants

22

What are calcarous oozes

made up of remains of tiny shells and test containing calcium carbonate

23

What are the animals that contribute to calcareous oozes

dinoflagellates and foraminiferea

24

What are the plants that contribute to calcareous oozes

coccolithiphores

25

How does calcium carbonate dissolve

at high pressure, high CO2 concentration and L temp (ie deep ocean)

26

What does calcium carbonate dissolve into

CO2

27

Where is calcium carbonate presereved

shallow water

28

What is the water above continental shelf called

neuritic zone

29

What plant contributes to siliceous oozes

diatoms

30

What animal contributes to siliceous oozes

Radiolarians

31

Where/how does silicate dissolve

not at h pressure, h co2 concentration, l temp
dissolves only if not enough silica

32

What are the biogeneous accumulation on continental shelf

1cm per 1000 yars

33

what are the diatomaceous oozes accumulation

1 cm/year

34

What are hydrogenous sediment

precipitation from sea water or pore water (water with minerals)

35

What are manganese nodules

iron and manganese oxide with other heavier elements

36

What is the accumulation of manganese nodules

1mm/1 million years

37

What is the water above continental shelf called

nuritic zone

38

How do radioactive isotopes help date ice/water

more O18 means more evaporation meaning ice age time (glacial maximum)

39

How can date time from ice cores

foram test deposite

40

What are heinrich events

poorly sorted sediments, large rocks within mostly fin grain sediment---moraines and drop stones