Flysch and Molasse are terms that describe different sets of sedimentary facies associated with orogenic belts. Molasse is defined as terrestrial and shallow marine deposits formed nearest the rising mountain front. It consists of various interbedded rock types including conglomerates, sandstones, and shales. The flysch on the other hand is made up of deep marine […]
Author: Christopher Spencer
Central Alps – Helvetic Nappes
First off we should define what is a nappe. A nappes is a package of rock that has been folded and deformed to the point that it is completely allocthonous, that is disconnected from its origin (generally over 5km from the original position). They are characterized by rootless, recumbent, and isoclinal folds. The word nappe is […]
Central Alps – Sesia-Lanzo
Last week we transected the Apulian crust through the Ivrea-Verbano Zone to the Insubric Line. The Insubric Line is the suture between the Apulian crust that makes up Italy and the European continent. Within this suture zone is a sliver of oceanic crust zone known as the Sesia-Lanzo Zone. The Sesia Lanzo and other units of […]
Central Alps – Ivrea Verbano Zone
I recently returned from a trip to the Central Alps in Italy and Switzerland. All things considered, the Alps might be my favorite mountain range to visit. It has the incredible relief of the Andes and Himalaya (almost), accessibility of the Rockies, and food of … Italy! The Alpine mountain chain extends basically along the […]
Portrush, Ireland – Siim Sepp
The last stand of the Neptunists – by Siim Sepp Portrush is a nice little seaside town in Antrim, Northern Ireland which I visited in the early summer of 2012. Portrush is located on top of a dolerite (diabase) sill which forms a promontory and continues off shore in the chain of islands, the […]
