The ferruginous oolitic formation in the Jura mountains of Neuchatel, Switzerland, and in other Jura localities are Callovian rather than lower Argovian in age. Both Callovian and Oxfordian (Jurassic) deposits, considered by some to be absent in the central Juras, were found to occur throughout the region, although generally in thin beds.

This content is PDF only. Please click on the PDF icon to access.

First Page Preview

First page PDF preview
You do not currently have access to this article.