Extended Data Fig. 1: PCA endmember examples. | Nature Geoscience

Extended Data Fig. 1: PCA endmember examples.

From: Valley formation on early Mars by subglacial and fluvial erosion

Extended Data Fig. 1

Examples of the four groups of valley networks as derived from the PCA classification: Warrego valles, fluvial (a), unnamed valley (M68), glacial (b), Abus vallis, sapping (c), and Pallacopas valles, subglacial (d). Images show colorized elevation (MOLA, Goddard Space Flight Center) overlying a THEMIS (ASU/NASA) mosaic.

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