There has been a wave of articles over the last few weeks out on the geoblogosphere on columnar jointing in lavas – with many, many great images of columns seen aroundthe world. I thought I’d jump in ...

Columnar jointing is a common feature in many basaltic lava flows and intrusions around the world. Spectacular arrangements of columns have fascinated observers for centuries, and numerous hypotheses ...

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is from Michael Poland, geophysicist with the ...