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Official Journal of the Asia Oceania Geosciences Society (AOGS)

Figure 4 | Geoscience Letters

Figure 4

From: Giant palaeo-landslide dammed the Yangtze river

Figure 4

Evidence for palaeo-landslide inferred from digital data. Location of landslide dam is shown in upper left panel on map of the Upper Yangtze basin. The reach indicated in the inset is displayed as an aspect map derived from SRTM data. Lighter shades indicate west-facing slopes and darker shades east-facing slopes. The shading indicates anomalies in the valley side slopes (upper right panel) where the general slope direction is reversed. The red line is a cross section perpendicular to river which is displayed in the lower right panel. The four arrows on the cross section and the aspect map identify location of Triassic escarpment and remnant headscar on the Sichuan side of river, the main river and location of Triassic rampart on the Yunnan side of river. The relationship of these features is annotated on a Google Earth oblique aerial view looking downstream towards Qiaojia (lower left panel). The view is to the northwest with the river flowing due north towards the top right of the scene. The star symbol marks the furthest downstream exposure of palaeo-lake deposits. The Triassic escarpment is a dominant topographic feature on the western side of the river.

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