martes, 28 de junio de 2011

Geomorphology

Concept of geomorphology

Geomorphology  is the scientific study of landforms and the processes that shape them.

Difference between landscape and landform

Landscape comprises the visible features of an area of land, including the physical elements of landforms such as mountains, hills, water bodies, living elements of land cover, human elements, and transitory elements. It refers to the combined effect of numerous landforms
A landform is an individual feature--a slope, valley or mountain. It comprises a geomorphological unit, and is largely defined by its surface form and location in the landscape, as part of the terrain, and as such, is typically an element of topography. Landform elements also include seascape and oceanic waterbody interface features such as bays, peninsulas, seas and so forth, including sub-aqueous terrain features such as submersed mountain ranges, volcanoes, and the great ocean basins.

Extragenic processes that form landscape

Extragenic processes refer to meteor impacts. They are important because they could help solve the question of where does water come from, or be the cause of mass extinctions (like dinosaurs). There are craters and large structures  produced by meteor impact

Endogenic processes that form landscape

Endogenic proceses that form landscape are Volcanism and Diastrophism:
1. Volcanism: intraplate hotspot activity, arc volcanism, sea floor spreading
2. Tectonics: Plate tectonics
3. Orogenesis:
4. Epierogenisis: regional uplift and subsidence caused by mantle anomalies.

Exogenic processes that form landscape

This processes are:
1. Weather and erosion
2. Hydrologic cycle and related fluvial processes
3. Glaciation
4. Eolian
5. Biological activity
6. Men

Example of landforms

Hills
Sand Dune


Glacier

Sources used to write the post

Video related to these topics

http://www.youtube.com/watch?v=_ijoXMcS1XI

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