Insta petroleum system: Wick’ed oil in Scotland
Usually, petroleum geologists think of source rock and reservoir as different things: The source is the tight, shitty shale that has to be be boiled to expulse oil. The reservoir […]
Category Archives: Palaeozoic
Desert city in the woods
Our journey to the far east of Europe soon comes to an end. But first, a look at something completely different, in age and type of rock. Let’s leave the […]
On salt and old timber buildings
In the last post, we took a walk in a cave that water has carved out in the easily solvable mineral anhydrite, a calcium sulphate. Anhydrite is among the minerals […]
Boooo! Halloween in the Kungurian – literally
A few days ago, I took you to Perm to look at the Permian, and a crash-course in the mysterious ways of carbonate rock porosity. Today, we home into the […]
Perm and the Permian: Carbonate porosity for muggles
Some places have a special place in the hearts of geologists. Iceland with its volcanoes. The Dorset coast because it is the cradle of modern geology. The Oslo Graben because […]
Pretty crossbeds from Hovedøya
OK, folks, here is another post of Early Paleozoic sediments from Hovedøya, near Oslo. Because that’s the closest to my home I find pretty sedimentary rocks. This time, the I […]
A nice fault on the way to work
All my faults are normal, but I can reverse them…is an old joke among us structural geology nerds. But there is no reason to reverse this prettier-than-normal fault, which actually […]
Pretty sedimentology from Hovedøya in the Oslo fjord
For no particular reason, I took a trip to Hovedøya, one of the islands in the fjord just south of Oslo. These islands consist of the ”Cambrosilurian”, Cambrian to Silurian […]