WebContinental crust is indeed “granitic”, and has the general composition typical of granitic rocks, made up of mostly aluminium silicates (the SiAl). The lower density of these rocks … WebTectonic plates can be composed of oceanic or continental crust, and their movement can be influenced by a range of factors, including the distribution and density of crust, the temperature and pressure of the mantle, and the forces generated by the interaction of plates at their boundaries.
Solved At convergent plate boundaries, two plates are moving - Chegg
Web11. which of the following best describes the oceanic crust? a. the oceanic crust has the same composition as granite b. oceanic crust is relatively high density than continental … Web4 Mar 2024 · The oceanic crust is younger than the continental crust, rarely reaching more than 180 million years old. Here is how the age is determined. ... Like any rock, the plates of basaltic composition become less thick and … reliability pcr covid test
Oceanic Crust vs Continental Crust: What’s the difference?
WebThe rough ratio by area of oceanic to continental crust should remain roughly constant until plate tectonics shut down. And the interaction of plates will generally cause the uplifting of continental crust such that it tends to be exposed above the ocean, though sea level changes will also factor into that (much more than erosion, really). WebThe crust is the uppermost layer of the planet. It is between 5 and 80km thick. There are two types of crust, oceanic crust (found beneath the oceans) and continental crust. The … WebExercise 9.4 Rock Density and Isostasy. The densities (also known as “specific gravity”) of a number of common minerals are given in the table below. The approximate proportions of these minerals in the continental crust (typified by granite), oceanic crust (mostly basalt) and mantle (mainly the rock known as peridotite) are also given. product tester for high heels