EarthStructure - Corrections

EarthStructure
An Introduction to Structural Geology and Tectonics

Note: only corrections that may lead to misunderstandings are listed on this page. A record of minor corrections (such as spelling errors) is kept elsewhere. We would greatly appreciate hearing about errors in interpretation, need for clarification and typos that you have found.

Please email your comments to Ben van der Pluijm (local program, remote form).

Chapter 1

Chapter 2
p.22
End of last paragraph. "... to a horizontal surface in the salt layer on either side of the dome is greater than the weight of the column penetrating the top of the dome ......" (not "... is less than ...")

Chapter 3

Chapter 4
p.58
Figure 4.9 and corresponding text. The kinematic vorticity number for general shear is: 0<W_k<1, not 0>W_k>1.
p.76
Figure 4.30. The strain values plotted in the diagram are incorrect; click here for correct figure 4.30 (FIG430.gif) or see original in Pfiffner and Ramsay, J Geoph. Res., 87, p.319.

Chapter 5
p.79-80
The real story on flow of old window glass. Glass does not flow to the bottom of window panes on the time scale of decades to centuries. As reported in a recent Science News, the use of glass as an analogy for ductile flow is wrong. Glass will not flow unless heated to about 350°C. Unless it's heated, it would take 10³²y to sag. Apparently, the old technology of making window panes involved blowing a big globe of glass, which was then flattened into a disk and spun to make it flatter. Due to the spinning, the glass developed whirls and became thicker on the outside. It was then cut into rectangles. Glaziers would put the thicker part of the glass at the bottom of the pane for stability. Check http://www.heimbaugh.com/science/glass.flow/ for a punishing commentary that seems to have missed this early 1998 correction.
p.85
Click here (chapter5table6.gif) for new Table 5.6.

Chapter 6
p.99-101
Remove references in text to Figure 6.1b and Figure 6.1c.
p.104
Stress concentration is (2a/b)+1, rather than (2a+1)/b; examples at end of paragraph remain correct.
p.114
Figure 6.20. The horizontal axis plots 90-a (=q), rather than a (alpha) as defined in inset figure.
p.112
Replacing s_t (tensile stress) in equations 6.1 and 6.3 with s_c (critical stress) better clarifies the difference between remote and local stress. Also note that equation 6.1 can be simplified by a plane stress condition, which replaces E/(1-v)² by E.
p.118
In Figure 6.27, add a plane D at an angle of ~10^o with the compression direction, which represent the lower intercept of the friction envelopw with the Mohr circle (~160^o).

Chapter 7
p. 134-135
Sheeting joints and exfoliation joints (in Figure 7.15) are used as synonyms, but are not listed as such in Table 7.1.

Chapter 8
p.154
Figure 8.10. The location of the flat on the left side side of (a) should be at the base of the layers to correspond with the thrust geometry in (b).
p.158
Figure 8.15. The photo in (b) shows gouge (not gorge).
p.166
Figure 8.23. This photograph, showing uplifted basement rocks in the center surrounded by younger sedimentary rocks, was printed backward. A nice example of an uplifted basement ridge in a restraining stepover (Borrego Mountain) was provided by Art Sylvester.

Chapter 9
p.181
medium-temperature conditions are as 0.3>T_h>0.7 (not T_m).
p.183
Figure 9.6, caption. Freudian typo: John Suppe wrote a book on Structural Geology (not Structural Biology).
p.189
Figure 9.15. Width of view is 5 cm (not 5 mm).

Chapter 10
p.223
References to Figure 10.24a, Figure 10.24b, and Figure 10.24c should be Figure 10.24b, Figure 10.24c, and Figure 10.24d, respectively.
p.228-230
the discussion is clarified by substituting wavelength (L) for arc length in this section (as defined in Fig. 10.4). The 2nd sentence of p. 228, "Because arc length ....... fold analysis", can then be removed.

Chapter 11
p.246
section 11.3.4 reference to Figure 11.9d should be Figure 11.9.

Chapter 12
p.274
Figure 12.18. Strain ellipse in (c) should have perpendicular X_f and Z_f axes. For corrected figure, click here (12_18.jpg).

Chapter 13

Chapter 14

Chapter 15
p.325
Figure 15.4. Beta is defined incorrectly. Should be: b=l_s/l_u.
p.335
2nd paragraph. "As a consequence, the 1280^oC isotherm migrates to greater depth (i.e., the lithosphere thickens), so there is a greater thickness of cooler, denser lithosphere" (not lower).

Chapter 16

Chapter 17
p.383
Equation 17.2 should read: s_s= C + ms_n* and refers to Section 6.7, equation 6.4.

Chapter 18

Chapter 19
19.3, p. 416
1st paragraph: "The Tibetan Plateau stands between about 4000 and 5000 m in elevation ........" (not 400 and 500 m).

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