Fig. 2. Geological cross-section of study area showing imbricate sheets and overturned thrust-faulted anticline in the southern slope of Siah Kuh (Bahroudi and Omrani, 1999). Owing to
the Sabzevar fault activity, the cream, pink gypsum bearing marls (Mm) have been thrusted over young alluvial fans (Qt2). Location of cross-section is shown in Fig. 1.