Compare and contrast the geological features of a desert landscape and glacial landscape...
can you help me think of a geological feature? once i get that i have to compare and contrast each of them right?
Check this site for geological features of both landscapes.
http://www.scienceclarified.com/landforms/Basins-to-Dunes/Dune-and-Other-Desert-Features.html
http://www.scienceclarified.com/landforms/Faults-to-Mountains/Glacial-Landforms-and-Features.html
are they asking like dune types?
Yes.
like explain these :
barchan
parabolic
linear, or longitudinal,
transverse
Look those terms up in your text or online.
Of course! I can help you think of a geological feature for comparison between a desert landscape and a glacial landscape. One such feature that comes to mind is a canyon.
To compare and contrast these features in both landscapes, you can consider the following points:
Formation: In a desert landscape, canyons are typically formed by the erosion of wind and water over millions of years. The constant movement of sand and occasional flash flooding contribute to the creation of deep, narrow canyons. In contrast, in a glacial landscape, canyons are formed by the movement of glaciers over thousands of years. As glaciers slowly advance, they carve out deep, U-shaped valleys by scraping and grinding rock and soil.
Shape: Deserts often have canyons with steep, V-shaped walls. The erosion caused by wind and water tends to create sharp edges and vertical slopes. On the other hand, glacial canyons exhibit a more U-shaped profile due to the scraping action of glaciers. The ice erodes the valley floor and smoothes the sides, resulting in a wider, rounded appearance.
Surface Features: Desert canyons often have exposed rock formations due to the minimal vegetation cover in arid regions. The rocks may vary in color and texture, providing an array of geological features such as layers, folds, and faults. In glacial landscapes, canyons might display more evidence of glacial activity, such as glacial till (unsorted sediment deposited by a glacier) or moraines (debris left by receding glaciers).
Water Sources: In desert canyons, water sources can be scarce, and intermittent streams or rivers may flow through them during rain events. However, these waterways are typically dry for extended periods of time. In contrast, glacial canyons often have active, flowing rivers or glacial meltwater streams due to the continuous melting of glaciers.
Vegetation: Desert canyons often have limited vegetation, with sparse drought-resistant plants and shrubs adapted to arid conditions. Glacial canyons, on the other hand, can support a more diverse range of vegetation. The presence of water and nutrient-rich glacial till can promote the growth of mosses, lichens, grasses, and even trees in certain areas.
By comparing and contrasting these various aspects of canyons in desert and glacial landscapes, you can gain a comprehensive understanding of the geological differences between the two environments.