sections of the whole external domain from the Oisans to the Mont Blanc massif. These cross
sections were built using published data for the Jura and subalpine fold‐and‐thrust belts
and new structural and field analysis for the External Crystalline Massifs. Five units are
defined: the sedimentary nappes from innermost parts of the external zone (eg, ultra‐
Dauphinois/Helvetic), the crystalline units with their dysharmonically folded cover (eg …