Seafloor spreading occurs along mid ocean ridges large mountain ranges rising from the ocean floor.
Seafloor spreading was a key discovery because it showed.
These age data also allow the rate of seafloor spreading to be determined and they show that rates.
The area was once covered with swamps jungles.
Plant fossils showed cold areas used to be tropical.
That mid ocean ridges have rifts at the center.
For instance the atlantic ocean is believed to be expanding because of its few trenches.
Spreading rates determine if the ridge is fast intermediate or slow.
The discovery of the code of hammurabi was valuable because it extended the date of common laws back almost 1 000 more years.
As upwelling of magma continues the plates continue to diverge a process known as seafloor spreading samples collected from the ocean floor show that the age of oceanic crust increases with distance from the spreading centre important evidence in favour of this process.
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.
What was the importance of the discovery that molten rock was coming out of the cracks.
Subduction and sea floor spreading are processes that could alter the size and form of the ocean.
The discovery of seafloor spreading finally provided a mechanism for.
Terms in this set 31 till and striations.
What kind of fossil evidence supported wegners hypothesis.
What layer of earths mantle do tectonic plates ride on.
Spreading rate is the rate at which an ocean basin widens due to seafloor spreading.
The mid ocean ridges are elevated above the surrounding seafloor because.
But the discovery of seafloor spreading disproved a part of wegener s theory because it wasn t just the continents that were moving through static oceans as he had originally thought but rather entire tectonic plates consisting of the continents ocean floors and parts of the upper mantle.
Sea floor spreading was a key discovery because it showed.
It showed that civilization was much more advanced then thought.
Why was sea floor spreading a key discovery.
This idea played a pivotal role in the development of the theory of plate tectonics which revolutionized geologic thought during the last quarter of the 20th century.
