Map with Physical

lestats_bride

I was just wondering if anyone could give me some help on recognising physical features like a corrie, drumlin or ribbon lake on a map.

Also any help with understanding patterns of drainage would be much appreciated!

snappieT

OK, drumlins are dead easy. It's just an absolute mess of contour lines to form the 'basket-of-eggs' topography.

A corrie looks like a hole in a mountain with only 3 sides: three cliffs and an open end towards the foot of the mountain as such.

Ribbon lakes are difficult to miss. They appear along a river within a U-shaped valley, which is a cut-out with a running cliff on both sides on a map. They appear as extra width in the river along it's course.

For drainage:
- Deranged: These follow no pattern whatsover
- Trellis: This is where the tribuatary flows into the main river at a roughly 90 degree angle
- Dendretic: This forms a tree-like pattern. The tribuatary flows into the main river at an acute angle from the source
- Radial: This is simply a mountain being drained from multiple sides my multiple rivers, forming this pattern.

lestats_bride

Ah thank you very much!

So if a question came up about physical features shaping the landscape. I'd identify what it is, give evidence on the map and would i then have to explain how it was formed?

snappieT

Well, you'd use the standard
Name:
Process:
Example:
Diagram:
Formation:

structure, but under Example you would give both an Irish example (Powerscourt Waterfall, Co. Wicklow) and a Grid Ref on the map Y 777 777