1. Education

Lateral Moraine, Alaska

Visual Glossary of Glacial Features


Lateral moraines are sediment bodies plastered along the flanks of glaciers. (more below)
Glacial bathtub rings
Photo (c) 2005 Andrew Alden, licensed to About.com (fair use policy)
This U-shaped valley in Glacier Bay, Alaska, once held a glacier, which left a thick swath of glacial sediment along its sides. That lateral moraine is still visible, supporting some green vegetation. Moraine sediment, or till, is a mix of all particle sizes, and it can be quite hard if the clay size fraction is abundant.

A fresher lateral moraine is visible in the valley glacier picture.

©2014 About.com. All rights reserved.