Skip to main content Accessibility help
×
Hostname: page-component-586b7cd67f-t8hqh Total loading time: 0 Render date: 2024-11-25T11:17:49.423Z Has data issue: false hasContentIssue false

Transformation of landforms and Quaternary deposits

from Environmental and landscape changes

Published online by Cambridge University Press:  05 September 2014

Get access

Summary

The greatest changes in landforms and Quaternary deposits have occurred due to the glaciers' recession, as described above. New landforms have appeared. Accumulation landforms appeared in the front of glaciers and around glacier tongues in their marginal zones, i.e. on lowlands and valley floors abandoned by glaciers and in their fore-fields situated below the marginal zones (i.e. beyond the former reach of the glaciers, Figs 10–14). Erosion landforms, apart from pro-glacial river incisions (Fig. 15), prevail on the steep slopes of valleys and mountain massifs. Hence, the recession of the upper parts of glaciers results almost exclusively in erosion landforms, and the recession of the lower parts of glaciers leaves both erosion and accumulation landforms behind (with predominance of the latter).

The following new ice-free landforms have been observed: rocky and rock-and-weathering slopes, valley incisions (cut by glacial waters) of different types (gullies, gorges), and roche moutonnées. The decrease in glacier thickness uncovers nunatak slopes from top to bottom. The continuation of this process leads to the joining of nunataks into new mountain ridges or ranges. Once the ice is gone, these erosion landforms undergo mostly non-glacial denudation-erosion changes, especially if they are located on steep slopes and in significantly inclined upper parts of valleys. However, some of them, especially at the foot of the slope and in the lower parts of valleys, are being covered by new deposits, first of all moraine or glacifluvial deposits, but also talus, weathering and fluvial deposits.

Type
Chapter
Information
Publisher: Jagiellonian University Press
Print publication year: 2011

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Save book to Kindle

To save this book to your Kindle, first ensure [email protected] is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.

Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

Available formats
×

Save book to Dropbox

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.

Available formats
×

Save book to Google Drive

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.

Available formats
×