what affects landforms?

Question

ok i am doing a geography paper where i have to do landform identificatian and causes which i have been able to find out but there is another section that says other info so i need to know other fascinating things about our landform help due tomorrow

Answer 1

It begins with plate tectonics. Which cause rifts and mountain building. In water these are bays, underwater canyons and Islands. When two plates collide trenches are formed. On land thes are valleys, plateaus and escapements. One plate slides beneath another is called subduction. It forms volcanoes. Another action called plutonic also forms volcanoes. The crumpling of the land from some of the collisions are called inclines(up slope) and sinclines (down slope).

Natural forces that act upon the earth are wind and water. Water works upon the land in all its forms. These are called erosive forces.

Answer 2

landforms like a mountain chain are affected by erosion by wind and water. An example is the current Appalachian Mountains in the eastern US are really the bottom parts of a former much higher mountain chain. Of course, it took millions of years to erode by wind and water. Recently, a much quicker method to achieve the same results is being done by humans owing coal companies ripping up mountains to get at the coal.

Answer 3

The study of landforms is called Geomorphology.

Everything you see exposed on the earth is (present tense) formed through weathering by erosion. Harder, more resistant formations generally hold up the mountains. Less resistant formations, shales and limestones, are being eroded out by weathering forming valleys. Sinkholes form primarily in limestone bedrock valleys as the underlying limestone is eroded away by carbonic acid (natural acid rain) and collapses.

Everything underwater is undergoing deposition, opposite of erosion. Not a hard fact with rivers as they can erode their way into their valley. But, a meandering stream (lots of bends) is doing both. They caused the flat valleys they are in by eroding on the outside of their bends and depositing on the inside of their bends.

Glaciers have scraped, ground and pushed rock debris as they moved south like giant bulldozers. They have scoured out valleys and scraped off mountain tops. When they melted, torrents of water rushed out their valleys and they left vast thicknesses of glacial till behind filling the valleys with hundreds of feet of unconsolidated material. The Finger Lakes in New York were formed by glacial activity.

The 1812 great New Madrid earthquake formed Reelfoot Lake when the Mississippi flowed backwards. (Facts are still in dispute.)

The Himalayan Mountains are formed by the Indian tectonic plate pushing north agaist the Asian tectonic plate. The mountains still continue to grow at about 2 inches per year.

Geology and Geography - always linked, always working together. You always have to be someplace.

Answer 4

glaciers move the loose layers. one way is to clear the sides of mountains as the glacier moves down. another way is to fill in small valleys with the debris as the glacier crosses over. glaciers also form "pot lakes" as they retreat and leave a chunk of ice to melt in a hole formed by the glacier. a glacier formed long island NY, it is large morain (deposit of sediment left by a retreating glacier". finger lakes are also landforms created by glaciers.