How old are the rocks of the Atlantic sea floor?
The rock of the Atlantic Ocean seafloor is less than 200 million years of age on the oldest end, and currently in the process of creation at the Mid-Atlantic Ridge.
Jurrasic= 206-142 Million Years Ago
How would the age of the oldest rocks on the continents compare with the age of the oldest rocks on the seafloor if the rock on the continents is continually formed but not removed?
The oldest rocks on the continents would be much older than the rocks on the sea floor because the rocks on the continents are not being removed unlike the rocks on the sea floor that are made by the mid-ocean ridge are being removed by deep ocean trenches. this prossess that is occuring on the sea floor is called sea floor spreading. evidence of this is the Pacific ocean shrinking and the Atlantic ocean growing.
Around 200 million years in age.
Around 200 million years of age.
The prominent sea floor feature found in the central Atlantic ocean is called the Mid Atlantic Ridge.
The study of the sea floor. Also the rocks and structures beneath the sea floor =]
Rocks on the sea floor are very young because most have resulted from recent volcanic activity. Volcanic activity is constantly erupting on the ocean's floor and creating new rocks.
Scientists date sea-floor rocks by looking at patterns in the rocks, including magnetic patterns, and by looking at the geomagnetic reversal time scale.
At a mid ocean ridge where sea floor spreading occurs.
Sea floor rocks are on average, much younger. Nearly all of the oceanic crust is recycled by the processes of plate tectonics in a roughly 160 million year cycle. Comparatively, the oldest crustal rocks discovered so far are over 4 billion years old.
Atlantic - 2 cm
Just as new sea floor forms at mid-ocean ridges, new sea floor is forced back into the mantle at abduction zones. The oldest seafloor is at east and west the edges of the Atlantic Ocean, dating to the breakup of Pangaea.
Rocks have a north and south pole. The sea floor was discovered to have different magnetic poles on cracks in the ocean floor.
looking at patterns
As the sea floor spreads, the old ocean floor gets pushed out, which makes the plates move.
Sea floor spreading
The sea floor is being constinty made. As the new sea floor pushes the old sea floor farther away, the old sea floor hits and another plate then the denser plate subducts under into he matle
The oldest continental rocks are 4 billion years old whereas the oldest sea-floor rocks are 200 million years old What is the difference in these ages?
The difference is 3.8 billion years. The ocean floor rocks are so much younger because they are continually being created and destroyed by the process of Plate Tectonics.
How old are rocks off the east coast of North America relative to rocks along the Mid-Atlantic ridge?
The rocks off of the east coast of North America are much older than those right along the mid-Atlantic ridge because sea-floor spreading is occurring where oceanic plates are diverging from one another. The rocks right along the ridge are the newest ones being formed, and the ones off the east coast of North America were made a long time ago.
Yes, the Atlantic ocean is growing because of the sea floor spreading under it, while the Pacific Ocean is shrinking because the sea floor is folding under itself and into the mantle
As the sea floor spreads the magnetic orientation in the rocks as they cooled is preserved. As the earth's magnetic field changes then a distinct pattern is imprinted in the rocks. If sea floor spreading is true then this unique pattern should be the same on both sides from the spreading point. Measurements of sea bottom rocks verify this symmetry is true. :)
Quite the opposite, in fact: Oceanic rocks are always younger than the Continental ones as sea-floor is rapidly (in Geological time) created and destroyed. This means that the sea-floor is relatively young, and the continental crust is not destroyed nearly as quickly, and is bolstered by uplift from within the Earth. Thus the Continental crust is very old; far older than the Oceanic crust.
Closest to the ridge
They are not. For instance, one may go to any active volcano and find rock which is hours old. However, generally, the sea floor is relatively young rock which spreads from huge faults under the ocean. This sea floor eventually gets transported to a boundary and heaps up into mountains which break the surface. Thus the concept that sea floor rock is younger than the continental surface rock.
On the sea-floor. It's a warm-water shelf-sea sediment.
1.) The age of the rocks- the oldest ones are found further away from the original mid-atlantic ridge. 2.) Magnetic clues. The rocks with iron in them have shown that the Earth's magnetic field has reversed itself several times. It is imprinted in the rock.
No. The sea floor is much younger than the continents. The oldest sea floor is about 200 million years old. The continents are billions of years old.
They found that the youngest rocks on the sea floor were at mid-ocean ridges and the oldest were further away from the ridges.
They like to live under rocks on the sea floor.
Yes, because they make up the ocean sea floor.
use the hm dive
he discover sea floor spreading
in the sea at the bottom of the sea. Oysters live on the sea floor or attached to rocks. In salt water.
The sea floor is older than 200 million years. It has been recycled by plate tectonics. Very old rocks have survived.
Which theory explains why rocks found on the ocean floor are younger than those found on continents?
Sea Floor Spreading
The age of rocks in the ocean crust depends on where the rocks are collected. Scientists collected rock samples from the sea floor. They found out that rock samples that were closer to mid-ocean ridges were younger than the samples farther away from the ridges. So pretty much you could get rocks that are thousands of years old to over millions of year old.
What motion of the sea floor is responsible for the formation of the Mid Atlantic Ridge's rift valley?
Perpendicular (away from) the ridge, that why the Atlantic ocean is widening.
Scientists discovered that the rocks that were found farther away from the ridge the sample was taken from, the older the rocks were. The most recent rocks were always in the center of the ridges. This showed that sea-floor spreading really has taken place.
pacific ocean, atlantic ocean
On each side of the mid-ocean ridge is a mirror of the striped pattern on the other side. When drawn, these patterns show alternating bands of normal and reverse polarity that match the geomagnetic reversal time scale, scientists can assign ages to the sea-floor rocks. The youngest rocks were at the center, and the older rocks father away. The ages of the sea floor rocks are symmetrical. The only place on the ocean-floor where new… Read More
sea sponges are Non-motile seeing as they are connected to the ocean floor and rocks
the ocean sea
Do You Know The Sedimentary Rocks? They are formed into sediment on the sea floor sediment is sand
as it spread away from a mid-ocean ridge, the sea floor carries with it a record or magnetic reversals. i hope this answer would be correct :) also, when the magma rises through fractures in the sea floor at the mid-ocean ridge, the magma cools and forms new rocks. this new rock takes place of the old rock and the old rock gets pulled away.
The Atlantic ocean because it has the mid-Atlantic ridge, one of the greatest parts of sea floor spreading.
Old sea floor rocks are much younger than old continental rocks! This is because the oceanic lithospheric plate forming the seafloor tends to be recycled at places known as subduction zones where it is forced below less dense (commonly continental) lithosphere. As such the oldest continental rocks tend to be 2-3 billion years old whereas oceanic crust neve tends to be more than a few hundred million years old.
The rocks off of the east coast of North America are much older than those right along the mid-Atlantic ridge because sea-floor spreading is occurring where oceanic plates are diverging from one another. The rocks right along the ridge are the newest ones being formed, and the ones off the east coast of North America were formed a long time ago.
What change in the age of the sea floor is observed as distance from the mid Atlantic ridge increases?
the ocean floor gets older as distance gets larger
water. most but not all stick to rocks or the sea floor.