Читать книгу Continental Rifted Margins 1 - Gwenn Peron-Pinvidic - Страница 38

In some cases, extension can occur related to strike-slip faults. In regions with multiple segments of strike-slip faults, the lateral displacement between the faults will lead to stepovers and, eventually, the development of pull-apart basins – also named strike-slip basins (Figure 1.26). Typically, pull-apart basins are strongly compartmentalized, with each individual basin sharing similarities with discrete intracontinental rifts. The standard basin geometry corresponds to a rhomb-shaped graben or half-graben. In theory, these basins tend to be fairly deep with a fast subsidence. Type examples of strike-slip faults with pull-apart basins include the San Andreas Fault, the Dead Sea Transform and the North Anatolian Fault (Şengör et al. 2005). The most cited examples of strike-slip rifts include the Salton Sea, the Death Valley, the Jordan Valley-Dead Sea Rift – Gulf of Eilat and the onshore northernmost part of the Red Sea Rift.

Figure 1.26. Diagram illustrating the main structural geometries associated with a pull-apart basin, at its early stage of development (source: modified from Wu et al. 2009, based on analogue modeling results)