10.29. (10/28) Deep Ocean Sedimentation & Chemistry of Chemical Sediments/Sedimentary Rock Flashcards
Pelagic, Hemipelagic, limestone, chert, calcite, dolomite, evaporites
1
Q
terrigenous sediment
A
siliclastics
2
Q
river systems
A
turbidites, siliclastics
3
Q
pelagic clay
A
- deep water
- 4km water depth
- depositional facies
- the only thing that can go far: fine-grained
- currents spread muddy plumes
4
Q
calcareous ooze
A
- South Pacific Ocean
- calcium carbonate- biological calcite
- limestone
- carbon pump
5
Q
plankton
A
floats
6
Q
phytoplankton
A
photosynthesis, primary producer
7
Q
phytococcolith
A
- chalk
- disk shells fall apart becoming calcareous ooze
- micro-organism, single-celled
8
Q
zoo-foraminifera
A
- eat coccoliths
9
Q
Siliceous ooze
A
- chert
- SiO2
- phyto: diatom
- zoo: radiolarians
10
Q
ccd
A
- calcite compensation depth
- limestone dissolves again
11
Q
hemi-pelagic
A
- continent
- pelagic
- ____: marl
- marl: half and half siliciclastic, chert
