Pikes Peak Pebble Pups

Pikes Peak Pebble Pups

Saturday, January 25, 2014

Aletsch Glacier

Aletsch Glacier, shown above carving through the Bernese Alps of Switzerland, is nearly 14 mi (23 km) in length making it the longest glacier in the entire Alps mountain system. It’s currently in retreat as are nearly all glaciers in the Alps. The dark narrow bands within the glacial ice are medial moraines, formed when individual valley glaciers merged. These moraines extend many miles downstream. The wavy features at bottom are possibly ogives -- spacing between the wave crests related to the ice flow over a given season. To give scale to the immensity of this glacier note the hikers in figure 3. Photo taken in late summer of 2013.
Photographer: Renata Hari , images used with permission
Summary Authors: Renata Hari; Jim Foster

Figure 1. Crevasses

Figure 2. Glacier in contact with rock valley. Moraine in center.

Figure 3. Closeup of moraine. Note on center of lobe just below the moraine the
group of ice climbers all in a row.

Figure 4. An arete in the background. 

Figure 5. A view of the glacier at a distance.

Welcome! This is the gateway to adventure and discovery

Through this blog pebble pups and junior members of the Colorado Springs Mineralogical Society can access their lessons, work on assignments and projects, and receive details about field trips in the Pikes Peak Region. This Internet program is also suitable for young people who are interested in Earth science but do not live near a rock club or gem and mineral society or for young people anywhere who want a deeper dive into these topics. The only requirement is that all participants must be members of the Colorado Springs Mineralogical Society and must fill out the CSMS membership form (under important websites) and send their registration and membership fee in. Steven Veatch is the senior instructor and will need an email from you with your name, address, phone number, and permission from your parents to participate in this program.