GSA Today
Volume 27, Number 9 (September 2017)
About the cover:
Perspective view (above) and partially interpreted anaglyph stereo view (below) of 3D terrain model developed from ground-based Structure-from-Motion photogrammetry in Surprise Canyon, western Panamint Mountains, California, USA. View is toward the north. Note how a distinctive schist unit mapped as white lines in the lower image outlines a sub-isoclinal recumbent fold that is refolded by an upright antiform in the foreground but is distinctly different on the ridge in the background. See related article, p. 4–10.
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