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It's believed in some instances that the Pacific Ocean is once where ancient civilisations of Mu and lemuria were located. Some ancient myths suggest an extinction level event occurred where a comet didn't Impact earth but passed by. The gravitational pull of the comet could in theory (depending on it's size) have torn part of the earth away from itself billions of years ago leaving the ridges as sign of the earths past torment.
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What is a oceanic ridges?
a ridge in the ocean
Why are ridges and rifts elevated features?
Ridges and rifts are elevated features primarily due to tectonic processes. In rift zones, tectonic plates are pulling apart, causing the crust to thin and create a series of valleys and elevated landforms. Similarly, ridges, such as mid-ocean ridges, form where tectonic plates diverge, leading to the upwelling of magma that creates new crust, resulting in elevated topography. These geological processes contribute to the characteristic height of these features above surrounding landscapes.
Where is ocean ridges generlly located?
Ocean ridges are generally located along the boundaries of tectonic plates, primarily in the middle of ocean basins. They form where plates are diverging, allowing magma to rise from the mantle and create new oceanic crust. This process can be observed in major oceanic ridges such as the Mid-Atlantic Ridge and the East Pacific Rise. These ridges are characterized by elevated topography and volcanic activity.
What is oceanic ridges?
a ridge in the ocean
Where are the youngest portion of Earth's crust found?
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.
What are the crests of mid oceanic ridges?
The crests of mid-oceanic ridges are elevated underwater mountain ranges formed by tectonic plate movements and volcanic activity. These ridges are where new oceanic crust is created as magma rises from the mantle and solidifies at divergent plate boundaries. The crests are characterized by features such as rift valleys, hydrothermal vents, and volcanic activity, making them key areas for geological and biological research. They play a crucial role in the process of seafloor spreading and the global carbon cycle.
What is mid - oceanic ridges?
mountainous topography
Mid-ocean ridges are actually underwater mountain ranges?
Yes, mid-ocean ridges are elevated areas on the ocean floor where tectonic plates spread apart, creating new oceanic crust. These ridges can indeed be considered underwater mountain ranges due to their topographic relief and the volcanic activity associated with them.
Where is oceanic crust created?
New oceanic crust is created at the mid-oceanic ridges, a divergent plate boundary.
What is the relationship between distance from the ridges and age of the crust?
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.
Is the oceanic lithosphere thick and brittle?
Yes, the oceanic lithosphere is relatively thinner and more brittle compared to the continental lithosphere. This is due to the cooling and solidifying processes that occur at mid-ocean ridges, which result in a thinner and more rigid lithosphere in oceanic regions.
Is it true that The Atlantic and Pacific basins have oceanic ridges and the Indian Ocean has no oceanic ridge?
yah
