The contact between the sediments and the tuff is an angular unconformity — a boundary where one rock unit cuts across the layering of another. This indicates a period of erosion and a time when ...

One of the things I love to do on this blog is share photographs of geology I’ve taken while doing field work, attending field trips/conferences, or simply traveling. I started this series of ...

He spoke on gradual change of a sharp angular unconformity in Painganga valley into a graded unconformity as we move towards the dip direction. Explaining the different types of shear and strain ...

It was first described in 1788 by James Hutton, the ‘father of geology’, as an example of an angular unconformity – a junction between two sets of rocks of different ages.

Friday Field Photo #133: Angular Unconformity in the Spanish Pyrenees This week’s Friday Field Photo is another one from a recent trip to the Spanish Pyrenees. What do you see?

News Release 7-May-2020 The great unconformity A billion years is missing from the geologic record; one UC Santa Barbara scientist believes he knows where it may have gone Peer-Reviewed Publication ...