| Description | Black and white photograph, taken from a 35mm slide, showing Dan McKenzie astride the offset drainage ditch which crosses the San Andreas fault at Almaden Winery 1967 (just before plate tectonics)' [see: McKenzie, D, "Plate tectonics and continental drift", 'Endeavour' , vol 29 (1970) January, pp 39-44, fig 3]. |