Sea Floor Young And Old

Oceanic crust tends to get colder and denser with age as it spreads off the mid ocean ridges.

Sea floor young and old.

The mid atlantic ocean ridge is young ocean floor. The oldest crust in the ocean dates back to the early cretaceous 100. This sounds old but is actually very young compared to the oldest continental rocks which are 4 billion years old. This proves that ocean floor is being destroyed therefore all ocean floor rocks are young compared to the age of.

New ocean floor is continually added by the process of sea floor spreading. The oldest oceanic crust is about 260 million years old. Seafloor spreading occurs along mid ocean ridges large mountain ranges rising from the ocean floor. The ocean plates spread and grow in opposite directions so rocks that are equidistance from the center have the same magnetic polarity and age.

This continual motion is evidenced by the occurrence of earthquakes and volcanoes. Margined octopus amphioctopus marginatus young octopus seeking shelter among litter on the ocean floor. Every so often it has occurred over 170 times over the past 100 million years the poles will suddenly switch. Lembeh strait north sulawesi indonesia.

Why is the seafloor so young. The mid atlantic ridge for instance separates the north american plate from the eurasian plate and the south american plate from the african plate the east pacific rise is a mid ocean ridge that runs through the eastern pacific ocean and separates the pacific plate from the north american. The amount of sediment on the sea floor simply does not support a billions of years old ocean but fits well with a young earth when the accelerated erosion rates during and immediately after the flood are accounted for. Learn vocabulary terms and more with flashcards games and other study tools.

The oldest ocean floor rocks ever found are 180 million years old. Lack of erosion evidence between strata. It is due to the process of subduction. Octopus is inside a plastic cup and is dragging a bivalve shell with its arm so as to put a lid on its plastic home.

As the magma and lava cool at seafloor spreading centers whatever magnetic field is present get ingrained into the rock. Remember the earth is 4 6 billion years old. When old was 27 1 2 of 54 young was 15 and old is twice that if you change the. There is a rather strenuous algebraic solution the answer is old is 30 young is 18when old was 18 young was 6.

The tectonic plates are constantly in motion and new surfaces are always being created. And that new crust was being formed and old crust was being destroyed in a continuous process that had been going on for most of earth s history. This is because the oldest sea floor is subducted under other plates and replaces by new surfaces. This phenomenon is known as sea floor spreading.

When making a multi layer cake the adjoining surface between layers is smooth.