PowerPoint Lectures for GE197j:
Artesian flow is water rising above the local water table due to hydrostatic head. This artesian well in Rangeley, Maine, remains flowing despite the fact that Poland Spring is pumping water nearby at a rate of 5000 gallons per minute, filling four large tanker trucks every hour.
Adequate supplies of fresh water are becoming one of THE global environmental issues of the 21st century; 25% of the human population of the world is already suffering from inadequate water resources. Maine is one of the few areas in the world with an abundance of high-quality fresh water, though this year (2016) has been very dry and we're currently facing moderate to severe drought throughout much of the state.
Earth in Revolt!
January, 2017

These presentations (in Microsoft PowerPoint) are made available solely for the use of students in GE197j, Earth in Revolt, at Colby College. These are the actual presentations made in class, sometimes augmented slightly to enhance the materials. However, nothing of substance will be added to materials once they have been presented in class without notifying the entire class that such a change has been made.
In order to view these, you will need to download them onto a computer capable of running Microsoft PowerPoint. Colby users not having this software may download it from the general server.

Click HERE for access to OLD EXAMS for GE141, which are the same format
we will be using and cover some of the same materials.

The Maldives in the Indian Ocean are a popular tourist destination. However, rising sea level produced by global warming is posing a threat to the existence of the island nation, all of which lies less than 10 feet (3 meters) above modern sea level.

(image from http://www.hotel-online.com/News/PR2009_4th/Dec09_HIMaldives.html)

The Colby Geology web pages are maintained by R. E. Nelson. Please e-mail any questions, comments
or suggestions you may have, especially if you encounter difficulties.

[ This page last modified on 25 January, 2017. ]