Ramp basin

A ramp basin is a geological depression bounded by a pair of opposite facing reverse faults or thrust faults. In rifting, the equivalent structure is a graben, although the bounding faults are normal rather than reverse in type.[1] Examples of this type of basin include the Cul-de-Sac depression in Haiti[2] and Issyk-Kul in the Tian Shan mountains in Kyrgyzstan.[3]

References

1. Cobbold P.R.; Davy P.; Gapais D.; Rosello E.A.; Sadybakasov E.; Thomas J.C.; Tondji Biyo J.J.; de Urreiztieta M. (1993). "Sedimentary basins and crustal thickening". Sedimentary Geology. 86 (1–2): 77–89. doi:10.1016/0037-0738(93)90134-Q.
2. Saint Fleur N.; Feuillet N.; Grandin R.; Jacques E.; Weil-Accardo J.; Klinger Y. (2015). "Seismotectonics of southern Haiti: A new faulting model for the 12 January 2010 M7.0 earthquake" (PDF). Geophysical Research Letters. 42 (23): 10, 273–10, 281. doi:10.1002/2015GL065505.
3. Vermeesch P.; Poort J.; Duchkov A.D.; Klerkx J.; De Batist M. (2004). "Lake Issyk-Kul (Tien Shan): Unusually low heat flow in an active intermontane basin" (PDF). Russian Geology and Geophysics. 45 (5): 616–625.