31. This paper was perhaps the first attempt to apply the concepts of recumbent folding and nappe structure to geologic interpretation of the piedmont. 32. In the cavity formed below the nappe , a local subpressure beneath the nappe is produced by which air is sucked into the flow. 33. In the cavity formed below the nappe, a local subpressure beneath the nappe is produced by which air is sucked into the flow. 34. Some scientists have observed geometric patterns in the area and have attributed it to a certain type of tectonic event called a thrust nappe . 35. It is widely seen as part of the Austroalpine nappes and correlated with the Dent Blanche nappe that crops out further to the northwest. 36. The Giessen nappe is often correlated with the Harz nappe in the Harz and similar units in the Bohemian Massif in the Czech Republic. 37. The Giessen nappe is often correlated with the Harz nappe in the Harz and similar units in the Bohemian Massif in the Czech Republic. 38. Erosion has separated some small pieces of the nappe from the central mass, forming small klippes in the vicinity of Braunfels and Wetzlar. 39. All the serpentinite bodies are found within the Lower Gneiss Unit ( LGU ), a basement thrust nappe of the northwestern Massif central. 40. The crest of a sharp crested weir should be no thicker than to ensure that the nappe springs clear of the weir's crest.
