Want the latest geologic timescale – at least the one used by the USGS? Well, you can download USGS Fact Sheet 2010-3059, which sets out the latest definitions and corrections for the geologic timescale. It is the first update since 2007, where new fossil correlations and dating of rocks allows for refining of the boundaries between the epochs, ages and periods. It is a must for any true geophile.
Three articles I found recently tackle volcano tourism – the plusses and minuses – in Java (Indonesia), Guatemala and the Congo. The volcanoes in both countries are relatively easy to approach, but are still very dangerous. This is especially true for people trying to visit Pacaya as officials in Guatemala are reporting an increase in seismic activity at the volcano that erupted earlier this year.