About 2700 kilometers
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The thickness of Earth's crust ranges from roughly 2 miles at the mid-ocean ridges to 70 miles in thickness under some continental mountain ranges, with an average overall depth of around 27 miles.
The Earths Crust can be divided between Oceanic Crust and Continental Crust. Oceanic and Continental Crust are quiet different.
The thickness of oceanic crust is between 5km and 10km. It is made of mainly basalt, grabbo and diabise.
The thickness of continental crust is between 30km and 50km. It is made up of lighter rocks such as granite.
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The Earth's crust is approximately 5-70 kilometers thick beneath the oceans (oceanic crust) and about 20-90 kilometers thick beneath the continents (continental crust).
The Earth's crust varies in thickness, ranging from around 3 to 25 miles thick. However, on average, the Earth's crust is about 18-25 miles thick below continents and around 3-6 miles thick below the oceans.
The relative thickness of the Earth's crust is similar to the relative thickness of an apple's skin compared to the apple itself. Both the Earth's crust and an apple's skin are thin outer layers in relation to the entire object.
The thickness of Earth's layers vary depending on the specific layer. For example, the Earth's crust can range from 5-70 km thick, the mantle is about 2,900 km thick, and the outer core is approximately 2,200 km thick. The inner core has a radius of about 1,220 km.
The Earth's crust can vary in thickness, but on average it is about 5-70 kilometers (3-44 miles) thick. However, it can be much thicker under mountain ranges and thinner under the ocean floor.
This variation in the thickness of Earth's crust demonstrates that it is not uniform and can vary significantly depending on location. It indicates the diverse geological processes that have occurred over time, such as the formation of mountain ranges or ocean basins, leading to this variability in crust thickness. Additionally, it highlights the dynamic nature of Earth's lithosphere.