Siccar Point, Scotland Scotland should hold a place of reverence in the heart of everyone who works in the Geosciences. Another of Scotland’s geologic gems; this outcrop literally led to the science of geology. This is the famous outcrop at Siccar Point, where James Hutton first put together the idea of geologic time as incredibly long, as having “that we find no vestige of a beginning, no prospect of an end”. This outcrop is a classic example of an angular unconformity. Hutton reasoned that the formation of this outcrop required immense amounts of time, geologic time. The rocks in the lower layer were deposited as sediments, lithified, tilted, and eroded over immense time. After that, an entire new package of rocks was deposited on top. Out in the world we can see snapshots of some of these processes; rocks being tilted by faulting, sediments being deposited, rocks being eroded after uplift, but they all take enormous amounts of time. This outcrop simply can’t be formed quickly by any rapid process. Today’s election results will be available in a blink of an eye compared to the time represented by this outcrop, but the legacy of both will endure. -JBB Image credit: Anne Burgess http://en.wikipedia.org/wiki/Geology_of_Scotland#mediaviewer/File:Siccar_Point.jpg Read more: http://www.scottishgeology.com/geo/regional-geology/southern-uplands/siccar-point/ Have you been missing out on our posts lately? If so, it is due to changes in Facebook's filtering system. To find out how you can enjoy reading our posts more often click here: http://tinyurl.com/ll9wd7l.
Fingal’s Cave, Scotland, United Kingdom Maybe? Well, today’s the day for the United Kingdom. Scotland, the northern portion of the island of Great Britain, is voting on whether or not to secede from the United Kingdom. I have absolutely no opinion on this referendum and am not going to try to understand or explain the issues involved, mostly because I’m a citizen of a different country. On the other hand, here are some Scottish rocks! This is Fingal’s Cave, a remnant of the same lavas that were produced 60 million years ago during an outpouring of volcanism across the northern British Isles. The basalt lava gives a beautiful example of Columnar Jointing, a fracture pattern formed when the lava solidifies, continues cooling, and then shrinks. The cave was then cut by the action of waves, which wore away at the columns until they started to give way. -JBB Image credit (Creative commons): https://www.flickr.com/photos/thalamus/221016485/ Read more: http://www.atlasobscura.com/places/fingal-s-cave http://www.staffatours.com/the-islands/staffa/fingals-cave/