Figure 1

View Original Image at Full Size

Figure 1. Here are three schematic drawings of survey markers at three different times. (a) Survey I (1852) would show markers (fixed points on the ground) in a straight line across the fault. (b) Survey II (1892) found a displacement of the survey markers and a distortion of the survey line. (c) Survey three (1906), after the San Francisco earthquake, found the markers to be displaced (to the north on the west side of the fault), but the survey line was no longer distorted. [Credit: Glenn Dolphin]

Originally uploaded in NAGT:Our Resources:In the Trenches:2018 - Volume 8:In The Trenches - January 2018.

Image 175278 is a 332 by 975 pixel WebP
Uploaded: Jan10 18

Last Modified: 2018-01-10 14:32:31
Permanent URL:

The file is referred to in 1 page
Glenn Dolphin
This item is offered under a Creative Commons Attribution-NonCommercial-ShareAlike license You may reuse this item for non-commercial purposes as long as you provide attribution and offer any derivative works under a similar license.