WebJun 8, 2024 · How very old sedimentary layers end up in horizontal layer on the continents is a mystery given what is now known about plate tectonics. It is clear that continental crust … WebContinental crust, however, is much more heterogeneous and complex than oceanic crust because it is much older and bears the scars of more tectonic events. Because of this continental complexity, the zones of weakness exploited by the rising hot spot magmas may not lie along a simple line.

The Solar System: THE MAJOR PLANETS AND THEIR …

WebOceanic lithosphere consists mainly of mafic crust and ultramafic mantle and is denser than continental lithosphere. Young oceanic lithosphere, found at mid-ocean ridges , is no thicker than the crust, but oceanic lithosphere thickens as it ages and moves away from the mid-ocean ridge. WebMay 10, 2013 · • Oceanic crust is mainly basalt whereas continental crust is mainly granite. • Oceanic crust is relatively younger than continental crust. • Continental crust is made up … sylph ionic hair dryer

Convection Cells With Accumulating Crust: Models of Continent …

WebIn contrast, much of the oceanic crust is substantially younger (tens of millions of years old), and none dates back more than 200 million years. It is not known when the original continental cores formed or how long ago modern plate-tectonic processes began to operate. Certainly the processes of internal convection, thermal segregation of ... Webcontinental crust and oceanic crust that differ in a number of ways. Continental crust is thicker than oceanic crust, averaging 20-70 km thick, compared to 5-10 km for oceanic crust. Continental crust is less dense than oceanic crust (2.7 g/cm 3 … WebMar 29, 2024 · The oceanic crust is thin, relatively young and uncomplicated compared to the continental crust, and chemically magnesium-rich compared to continental material. … sylph labyrinth