GEOLOGY

Detailed explanation-1: -Earth’s crust is generally divided into older, thicker continental crust and younger, denser oceanic crust . The dynamic geology of Earth’s crust is informed by plate tectonics.

Detailed explanation-2: -The Earth is covered by two kinds of crust-continental and oceanic. The thinner oceanic crust is normally a little more than four miles thick, while the thicker continental crust is often as much as 25 miles thick.

Detailed explanation-3: -Continental crust is typically 40 km (25 miles) thick, while oceanic crust is much thinner, averaging about 6 km (4 miles) in thickness.

Detailed explanation-4: -Earth is covered by two different kinds of crust: oceanic and continental crust. The normal oceanic crust is  7 km thick (White et al., 1992), whereas the continental crust is  40 km thick on average (Christensen and Mooney, 1995).

Detailed explanation-5: -Oceanic crust is generally composed of dark-colored rocks called basalt and gabbro. It is thinner and denser than continental crust, which is made of light-colored rocks called andesite and granite.