Geology is the study of the Earth and the materials which makes up the Earth as well as the structure and processes acting on them.
Regular Blogs
The state geologist informs his readers about geological finds, pricing for minerals such as copper and uranium, and earthquake facts and news.
http://arizonageology.blogspot.com/
A California geology teacher chronicles field trips throughout the western United States and uses this as his journal. It contains detailed descriptions as well as photographs. He also makes forays into other geological phenomena such as earthquakes and rock formations.
http://geotripper.blogspot.com/
Describes the way the blogger sees the world of stones, which is his idea that there are stories which connect geology and rocks with people and goes into how people use stone as a building material.
http://stories-in-stone.blogspot.com/
The focus of this blog is volcanism, volcanology, and volcanoes not just on earth, but throughout the solar system. Entries also discuss the science as well as volcanos' place in human culture and in history.
http://volcanism.wordpress.com/
Online since 2007, this volcano-related blog shares weekly eruption reports from the Smithsonian, news about volcanoes and eruptions, and volcanism questions and answers.
http://volcanoworld.wordpress.com/
