The youngest rocks were always in the center of the ridges.
Quizlet most in expensive way to collect sea floor samples.
Samples from the sea floor were brought up through the pipes.
Disturbed the sediment and could only gather samples from the surface of the ocean floor.
The total amount of polymetallic nodules on the sea floor was estimated at 500 billion tons by alan a.
As scientists try to understand movement of materials through the oceanic system they moor sediment traps at various depths for many months to collect samples of particles sinking through the water column.
The sea floor provides the largest reservoir of usable energy in the ocean and likely the world in the form of.
Running through all the world s oceans is a continuous mountain range called the mid ocean ridge submarine ridge in figure 14 23.
C sea floor methane seeps support a rich community of organisms that depend on the methane.
E methane is created when bacteria break down organic matter trapped in sea floor sediments.
Of samples needed time to collect samples type of vessel being used available.
Look a global tidal changes 3.
D sudden releases of methane hydrates have been linked to underwater slope failures.
Penetrate sea floor to some depth.
Map out global ocean currents and wave patterns 4.
They found that the farther away from a ridge the samples were taken the older the rocks were.
Monitor changes in ocean surface temperatures 5.
3 primary types of direct sediment samplers.
A very important way to increase the settling rate of fine particles in the open ocean is via.
This showed that sea floor spreading really has taken place.
Cover of these shells by a calcareous material and movement of the sea floor over millions of years.
Monitor global rise in sea level 2.
The sea floor then drops off steeply along the continental slope the true edge of the continent.
A very important way to increase the settling rate of fine particles in the open ocean is via.
They vary greatly in abundance in some cases touching one another and covering more than 70 of the sea floor.
Collecting adequate samples from which of the following is the most difficult.
Ubsurface moorings are also used to suspend settling plates above the deep sea floor to collect larval forms of benthic animals.
The smooth flat regions that make up 40 of the ocean floor are the abyssal plain.
Computers process the differences measured in sea level to create a very complete picture of the sea floor topography.
Collecting adequate samples from which of the following is the most difficult.
Gravity corer a hollow steel tube with a heavy weight on top thrust into the sea floor to collect the first cores cylinders of sediment and rock.
Then the scientists determined the age of the rocks in the samples.
Archer of the london geological museum in 1981.
