Book contents
- Global Resources and the Environment
- Reviews
- Global Resources and the Environment
- Copyright page
- Dedication
- Contents
- Preface
- Acknowledgments
- Figure Credits
- Part I Introduction, Dynamic Systems, and Change
- Part II People
- Part III Climates
- Part IV Landforms
- 10 Landforms and Soils
- 11 Bedrock Landforms
- 12 Landforms of Transported Materials
- Part V Biodiversity
- Part VI Water
- Part VII Agriculture
- Part VIII Energy
- Part IX Minerals
- Part X Forests
- Part XI Perspective
- Book part
- Index
- Plate Section
- References
12 - Landforms of Transported Materials
from Part IV - Landforms
Published online by Cambridge University Press: 05 July 2018
Book contents
- Global Resources and the Environment
- Reviews
- Global Resources and the Environment
- Copyright page
- Dedication
- Contents
- Preface
- Acknowledgments
- Figure Credits
- Part I Introduction, Dynamic Systems, and Change
- Part II People
- Part III Climates
- Part IV Landforms
- 10 Landforms and Soils
- 11 Bedrock Landforms
- 12 Landforms of Transported Materials
- Part V Biodiversity
- Part VI Water
- Part VII Agriculture
- Part VIII Energy
- Part IX Minerals
- Part X Forests
- Part XI Perspective
- Book part
- Index
- Plate Section
- References
Summary
Transported materials cover bedrock and provide new properties. Volcanoes deposit ash and tuff downwind. Sand dunes cover other landforms and vegetation, and create relatively useless and hazardous landforms. Loess (windblown silt) can create thin or thick layers of productive, erodible soils. Eroding rivers deposit their suspended materials in flat areas known as alluvial floodplains. They are highly productive for agriculture but usually flood without levee infrastructures. Coastal plains are uplifted continental shelves with exposed sediments; they have little vertical relief and a variety of soils. Glaciated areas are where glaciers overran the landscape, scraped and compacted the soil, and then melted and washed the soil; they create a variety of till (upland), outwash (lowland washed sand and gravel), and lacustrine (lakebed) soils. Bogs form in cold or water-saturated areas where organic matter does not decompose. Nutrients stay in organic matter, trees, and sphagnum moss grows on them. Permafrost areas contain permanently frozen soils at high latitudes or elevations. Wetlands are seasonal or permanently wet areas that are extremely valuable for biodiversity.
- Type
- Chapter
- Information
- Global Resources and the Environment , pp. 170 - 190Publisher: Cambridge University PressPrint publication year: 2018
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