Steps. 1  1. Perform major pruning during the dormant season. The ideal time to prune a crabapple tree is late winter or in the cold days of early spring, before leaves appear. 2  2. Remove suckers. Suckers are additional branches that begin growing underground and sprout near the base of the tree. 3  3. Remove water sprouts.
The upper crust is 12.5 km thick in crust with an average total thickness of 40 km (ref. 3). If the upper crust is the product of 14% melting, the corresponding residue would be 77 km thick, resulting in a total crustal thickness of 100 km, including the middle crust.
â¢ Oceanic crust is mainly basalt whereas continental crust is mainly granite. â¢ Oceanic crust is relatively younger than continental crust. â¢ Continental crust is made up of landmasses, whereas oceanic crust is the floor of the oceans.â¢ Continental crust is thicker (25-70 km) than oceanic crust (7-10 km) and is nearly 35-40km deep. Related posts:ceanic Crust. As the name implies, oceanic crust is the floor of the oceans. Obviously, this crust is thinner than the continental crust. The major type of rocks making up oceanic crust is basalt.