Interpreting Seismic Lines In-class Activity 2:
Practicing with Gulf of California Data
Goals: to practice recognizing geologic features on a seismic line; to discover differences in rifting styles through time in the Gulf of
California
Part I: Identify and mark all the features you can find. Note areas that are unclear or difficult to interpret.
Figure 9 from González-Fernández et al., 2005
Part II. Your instructor will show you how the authors of the study interpreted the lines. Using both interpreted lines (yours and the
authors), list the geologic events represented the different features. Decide the order in which these events occurred and then write a
short geologic history of the Northern Gulf of California.
Note to instructors: both lines are given here. You may choose to give students only one and show the second on the screen or give
students both.
Figure 11 from González-Fernández et al., 2005
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González-Fernández, A., Danobeitia, J.J., Deldago-Argote, L., Michaud, F., Cordoba, D., and Bartolome, R., 2005, Mode of extension
and rifting history of upper Tiburón and upper Delfin basins, northern Gulf of California, Journal of Geophysical Research, v. 110, p. 117.