|A picture of sandstone with rock hammer marks at night: doesn't really work.|
On yet another matter, I want to draw readers attention to this weeks volcanic activity in Iceland. Some interesting things are occurring under glacial cover. The only way that geologists can have an idea of what is going on is by measuring earthquakes. The number of earthquakes around two important concealed volcanoes has been in the many thousands this week. This has made processing the data time-consuming but presently the seismic records indicate some strange "goings on". In particular it appears that magma from the volcano Bardarbunga has made its way into fissures that are part of another volcano, Grimsvotn. This is quite unusual and with the added background these volcanoes have a very turbulent history and have taken many lives, all the more complicated. Volcano café has a good summary of the situation.