تعيين عمق سنگ بستر با استفاده از روش گراني سنجي در منطقه جنوب زاگرس

Depth to bedrock determination using gravimetric method in the south part of Zagros Region

Gravimetry is an effective and almost inex pensive approach to assess the depth to bedrock in sedimentary basins. In this research a gravity data sets located in south part of Zagros has been applied. The sedimentary deposits covered the top of a syncline which is located between two anticlines. An iterative gravity inversion method (Jachens and Moring, 1990) has been applied to determine the depth of sedimentary deposits in the region. In order to test the accuracy nd practicability of this method both 2dimensional and 3dimensional synthesized data has been applied. For determining the surface density and density-based zoning of the region a Nettelton Analysis has been used. Geological and geomorphological evidences almost confirm the determined depth results.