http://www.soton.ac.uk/~imw/petrol.htm- West's Geology Directory - Petroleum Geology section, this part of the site contains a large number of petroleum sites from around the world and information on petroleum exploration. The main index gives information on most aspects of geology.

http://www.brookes.ac.uk/geology/8361/1999/sarah/wytch.htm- An explanation of the formation and structure of the geology of South Dorset in reference to the exploration of oil at Wytch Farm. This is a very informative site about the regional geology of dorset and its hydrocarbon potential.

http://www.u-bourgogne.fr/BIOGEOSCIENCE/evresgb.html- Research on sedimentary petrology of terrestrial carbonates and sand dunes. Provides a good amount of research details on calcretes.

http://pubs.usgs.gov/gip/deserts/contents/- Deserts: Geology and Resources. A very informative site from the USGS with information on geological processes in desert environments containing some nice images of various desert structures and processes.

http://www.devon-cc.gov.uk/- Information Devon, a Devon County Council site with relative information on the county including all you need to know about what the county has to offer the tourist.