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20 Cards in this Set

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Marine sediment (by source)

-from land
-from water
-from life
-from volcanoes
-from extraterrestrial
Terrigenous
Hydrogenous
Biogenous
Volcanogenic
Cosmogenous
sediment by delivery

-river
-wind
-glacier
riverine
aeolian
glacial
sediment by location

-pelagic
-Neritic
from the deep ocean
from the continental margin
what is the most important rule in this chapter?
Larger particles require MORE energy to move.
because of this rule, what size sediment do you expect out at sea.
finer sand (clay-like)
the sediment on the continental margin is mostly ___________ but also includes __________.
Lithogenous; biogenous
the mississippi deltas have what sediment.
Sediment from the higher energy river flow into the low energy gulf and deposit all the sediment. ALOT of sediment at the mouth of the river.
Pelagic sediment consists of
Aeolian and volcanic sediments.
biogenic sediment is found everywhere but which is found where?
Coarser sediment is found on shore. While finer sediment is found at sea.
Any sediment that is made up of more than 30% biogenic material is called
ooze
What are the two types of ooze?
Calcerous and siliceous
silicaceous calcerous
Phytoplankton
Zooplankton
Diatoms Cocolithophores
Radiolarians Foraminifera
diatoms
like cold water
unicellular
life cycle of a day
radiolarians
unicellular
life cycle 7 days
Cocolithophores
most abundant fossilized orgnaism on Earth.
Foraminifera
pretty large
unicellular
segmented chambers
hydrogenous sediments
metalifferous nodules
grow in concentric circles
found where there is low sedimentation
What is our example of hydrogenous sediment
Evaporites- such as NaCl from seawater.
Cosmogenic sediments
Found in small amounts but ubiquitous around the world.
What is one comogenic sedimet that has gotten lots of attention.
The sediment of the asteroid that caused the extinction of dinosaurs.

High levels of iridium were found.