Page 308 - Global Tectonics

Kley (1996). Thick-skinned thrust belt (d) and restored section (e) of the Santa Bárbara system (all images modified from Kley et al., 1999, with permission from
deformation. Thin-skinned thrust belt (b) and restored section (c) of the sub-Andean ranges, Bolivia using data from Baby et al. (1992), Dunn et al. (1995), and
0
0

Eastern Cordillera Tanjia Interandean Zone Subandean Zone Villamontes S km 5 10 50 10 0 km T Shortening: 150 km (approx. 42%) C - Mz S - D u. C - O - -- pC-C km 5 10 50 010 km Sa. de Zapla Eastern Cordillera SE NW E W Sta. Bárbara System 0 0 km 5 10 10 20 Shortening: 30 km (approx. 20%) 50 10 0 km 0 0 km 5 10 κ u. C-D - km 10 - pC-m. C 20 (a) Sketch map showing the transitions from thick to thin lithosphere under the Central Andes as determined from seismic wave at
T
W (d) km (e) -
0 10 20
(b) km (c)
15 S 20 S 25 S 30 S
60 W Strong shortening gradient Fig. 10.5d

Strong shortening gradient Foreland

65 W Subandean Ranges Fig. 10.5b

W Elsevier). Location of profiles (b) and (d) also shown on Fig. 10.4.
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NAZCA PLATE

W Low Q/ thin lithosphere
75
Figure 10.5
(a)