At the oceanic ridges the age of igneous basalt rocks is approximately zero (as that is where they formed) and the rocks get older the farther away.
The ages of sedimentary and metamorphic rocks does not correlate reliably with distance from the oceanic ridges like the ages of igneous rocks, because they can form anywhere not mainly at oceanic ridges. Igneous granite rocks are generally formed around continental volcanos not oceanic ridges.
15 kilo meters is the distance between the crust and the mantle
The age of rock increases with distance from mid-ocean ridges. At the ridges, new oceanic crust is formed through volcanic activity, which is young. As the crust moves away from the ridges, it cools and becomes older. This process is known as seafloor spreading.
When oceanic crust is still young, it's relatively warm. The older it gets, the colder it gets. The colder it gets, the less volume it takes in, however, it's still the same amount of matter. This causes a bigger density, thus causing the crust to sink deeper into the mantle.
The youngest parts of the Earth's crust are found in the oceanic crust. This crust is continuously being created at the mid-oceanic ridges.
The age of the oceanic crust increases with distance from mid-ocean ridges. As tectonic plates diverge at these ridges, magma rises to form new crust, which is youngest closest to the ridge. As the crust moves away from the ridge due to seafloor spreading, it cools and ages, leading to progressively older crust farther from the ridge. This pattern is a key feature of plate tectonics and helps scientists understand the dynamics of the Earth's lithosphere.
Ridges and Rises are uplifts in oceanic crust caused by volcanic eruption in oceans, the difference between a ridge and a rise is of rift valleys, ridges have long valleys and rises do not have any valleys
Yes, new continental crust is not formed at mid-ocean ridges; instead, these ridges are primarily sites for the formation of new oceanic crust. At mid-ocean ridges, tectonic plates diverge, allowing magma from the mantle to rise and solidify, creating new oceanic crust. Continental crust is formed through different geological processes, such as subduction and continental collision, which occur away from mid-ocean ridges.
The oceanic crust is generally hottest at mid-ocean ridges, where tectonic plates are diverging, and magma rises to create new crust. As you move away from these ridges, the crust cools gradually due to the increasing distance from the heat source. Additionally, areas near subduction zones, where the oceanic crust is being forced down into the mantle, can also experience increased temperatures due to geothermal gradients.
Compared to ocean crust near deep-sea trenches, crust near ocean ridges is generally younger, thinner, and hotter. Ocean ridges are sites of active seafloor spreading where magma rises to create new crust, while deep-sea trenches are associated with subduction, where older, denser crust is pulled back into the mantle. As a result, the crust at ocean ridges is also less dense and more buoyant than the crust found near trenches.
at ocean ridges
new rock is forming
They can be found in Oceanic Ridges.