STRUCTURAL GEOLOGY OF MOGHAN BASIN NORTHWEST IRAN
In this study detail collected field data used to construct seven structural N-S cross sections (40-80km) perpendicular to the structures trend. Analysis of the sections shows three different types of anticlines: A- Gigantic anticlines with broad wave length, moderate dips and exposed Cretaceous core at the uplifted and mountainous regions of the basin at the south (en-echelon Molouk, Gozalan, Menjow, Emarat and Salavat anticlines). B- Narrower, long, steeply dipping, faulted anticlines with Cenozoic exposures at the center of the basin (Towlir, Germi, Ojaghgeshlagh, Ghir dareh, Takdagh, Sheikhlan, Koramalu, Digdash, Ortadagh, Khomarlu, and Qara Su anticlines). C- Minor anticlines at the north or between the main anticlines. Most of the anticlines are asymmetric with steeper north limb. Type B and C anticlines are detached on top of Cretaceous beds or upper levels, and underlying Cretaceous and older layers subducted under the southern volcano-sedimentary horizons and plutonics of Lesser Caucasus-Talesh range. Restoration of the cross sections shows about ten kilometers shortening of the basin in N-S direction accommodated in 6-8 parallel E-W trending anticlines and synclines in between.