Geology and Scenery

The remarkable surface of our planet

• Will-o'-th'-Wisp: strange lights in the swamp.
• The Llano Estacado: the astonishing West Texas plain made when the Rockies were elevated.
• How Geysers Work: the mechanism of geyser eruptions.
• How Volcanoes Work: the mechanism of volcano eruptions.
• Kamchatka, Tunguska and Taupo: using web resources to tour the world.
• Arthur Holmes and the Principles of Geology: the revolution in geology.
• Igneous Rocks: how to correlate names with composition, and keep them straight.
• How Deep is the Ocean, How High is the Sky?: a look at our planet.
• Tides: examples of tides and some attempts at explanation.
• The Ouachita System: the southern border of North America.
• Faulty Reasoning: how descriptive geometry is applied to three-dimensional visualization.
• Displacements on a Sphere: describing the movement of tectonic plates mathematically.
• Chesil Beach: a famous shingle barrier ridge on the English south coast.
• Geomagnetism: Speculations on the origin of the field.
• Kentucky Bluegrass: people can change the land beyond recognition.

The illustration shows the Double Mountain Fork of the Brazos River in West Texas