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Tutorials

There are a selection of geology tutorials from introductory to advanced levels covering a range of topics which together form a free online textbook.

If you enjoy reading our tutorials, please let other people know about them. If you think you can add something to the tutorial, please feel free to comment on them via the forums (you'll need to register to do this) or even better, you can write one yourself. Simply create an account if you don't have one and click "Create content"!

Below is the abstract of an example tutorial.

The Use Of Diatoms As Palaeoenvironmental Indicators

Diatoms are microscopic, photosynthetic algae (which due to the yellow-brown chloroplasts they contain are sometimes referred to as golden algae). Comprising one of the most common types of phytoplankton, they are found in a diverse range of environments from freshwater to saline oceanic waters. It is estimated that 20-25% of all the organic carbon fixation on Earth; via photosynthesis, is attributable to diatoms - in large due to their great abundance.

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