Nappe Terminology

4. a collection of thrust nappes that share common lithological and/or structural features
5. the sole thrust, which separates the entire stack of thrust nappes from a less deformed or undeformed basement
6. tectonic unit that has been transported too far for direct correlation with the substrate; nappes that have moved tens of kilometers or more.
8. almost autochthonous rocks in an orogen, with only short transportation; the rocks can easily be correlated with the autochthonous.
10. lithologic unit in or along an orogenic belt that has not been tectonically transported; basement
12. an erosional “hole” through a nappe that exposes the underlying rock unit or nappe
13. erosional remnant of a nappe

1. a low-angle fault or shear zone where the hanging wall has been transported over the footwall.
2. thrust nappe is bounded by a basal fault
3. thrust nappe is bounded by an overlying fault
7. large sheets or layers of rock separated from the substrate by a thrust fault
9. marginal part of the collision zone, farthest into the continent
11. the area in the central portion of the collision zone