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Richmond's Weathering - PowerPoint PPT Presentation


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Richmond's Weathering. A GIS Lesson. W hat is Weathering?. The process of rocks or other substances breaking down at or near the Earth’s surface is called weathering. N ot to be confused with… . … E rosion or D eposition. T ypes of Weathering. Chemical Weathering Mechanical Weathering

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Presentation Transcript
slide2

What is Weathering?

The process of rocks or other substances breaking down at or near the Earth’s surface is called weathering.

slide3

Not to be confused with…

…Erosion or Deposition.

slide4

Types of Weathering.

  • Chemical Weathering
  • Mechanical Weathering
  • Biological Weathering
slide5

Mechanical Weathering.

Mechanical weathering is the physical break down of a material without altering its chemical composition

slide6

Agents of Mechanical Weathering.

Abrasion

Exfoliation

Frost Action

Organic Activity

Gravity

slide7

Chemical Weathering.

Chemical Weathering is the alteration of the chemical composition of a material in breaking it down

slide8

Agents of Chemical Weathering.

Carbonation

Oxidation

Acid Rain

Plant Acid

Hydrolysis

slide10

Rates of Weathering.

4

3

2

1

1. Tropical rainforest2. Hot desert

3. Temperate mountains 4. Polar Regions

slide11

Rates of Weathering.

Austin, Texas

Annual Temperature: 20.3oC

Annual Rainfall: 82.4cm

slide12

What kind of Weathering does the Richmond area see?

take a virtual field trip and see for yourself.

slide16

These maps are georeferenced…

…so you can layer them.

slide17

Go to this website:

http://mathsciencecenter.info

Click on ‘Lessons on the Web’

slide19

Click on ‘Applications’ and

then click on your lesson.