Q. How do young mountain belts differ from old mountain belts?
The continental crust under mountain ranges is thicker than that under the cratonic interior; similarly, the crust under younger mountain ranges is thicker than the crust under older ranges. The uplift of these blocks of crust eventually stabilizes through isostatic adjustments.
Q. What main characteristics are used to distinguish the two types of mountain belts?
What main characteristics are used to distinguish the two types of mountain belts? Continents were formerly in different positions on the Earth and have shifted to their present locations over time. Late Paleozoic sedimentary rocks often contain extensive coal seams that were used to support the existence of Pangaea.
Q. What is a good example of a young mountain belt?
Thrust sheets dipping beneath the stable plate and a paucity of calcalkaline igneous activity characterize such collisional mountain belts. Typical examples include the Urals, Alps, and Himalayas (12–16).
Q. What is the difference between Shield and stable platforms?
The term craton is used to distinguish the stable portion of the continental crust from regions that are more geologically active and unstable. Cratons can be described as shields, in which the basement rock crops out at the surface, and platforms, in which the basement is overlaid by sediments and sedimentary rock.
Q. Where are shields and stable platforms found?
distinguish the stable portion of the continental crust from regions that are more geologically active and unstable. Cratons can be described as shields, in which the basement rock crops out at the surface, and platforms, in which the basement is overlaid by sediments and sedimentary rock.
Q. What is a stable platform?
[′stā·bəl ′plat‚fȯrm] (aerospace engineering) A gimbal-mounted platform, usually containing gyros and accelerometers, the purpose of which is to maintain a desired orientation in inertial space independent of craft motion.
Q. Why is ozone concentrated in a particular range of levels in the atmosphere?
Why is ozone concentrated in a particular range of levels in the atmosphere? It requires a catalyst, an isolated oxygen atom, and an oxygen molecule, all of which occur in sufficient quantities at that range of levels.
Q. What is the third largest continent?
North America
Q. What is the fourth largest continent?
South America
Q. Which is the largest ocean of the world?
Pacific Ocean
Q. What does Ocean mean?
1a : the whole body of salt water that covers nearly three fourths of the surface of the earth The ocean covers most of our planet, regulates our weather and climate, absorbs vast amounts of carbon dioxide, provides most of our oxygen, and feeds much of the human population. —
