Q16.1 Pleistocene Glacials and Interglacials
Describe the nature of temperature change that followed each of these glacial periods.
In each case the temperature drops slowly building to a peak of glaciation, and then each of the glacial periods is followed by a very rapid increase in temperature.
The current interglacial (Holocene) is marked with an H. Point out the previous five interglacial periods.
The previous 5 interglacials are labelled 1 to 5 on the diagram below. Interglacial 2 had two distinct warm episodes.
Q16.2 Ice Advance and Retreat
Glacial advance (top) and retreat (bottom) [SE]
The red dots show the new positions of the markers.
Q16.3 Identify Glacial Erosion Features
- truncated spur (other arêtes are labelled below)
Q16.4 Identify Glacial depositional environments
[SE after USGS at http://water.usgs.gov/edu/gallery/gl...satellite.html