Magnetic and Geoelectric characteristics of East Rosetta sand placer deposits, Egypt (original) (raw)

The black-sand beach deposits are known for many decades of years as a source of strategic and economic heavy minerals. The present study deals with the analysis and interpretation of the results of field geophysical survey and laboratory geophysical measurements conducted on Koam Mashaal area, east Rosetta Mediterranean Sea coast Egypt. These include field measurements of total magneticfield intensity and laboratory geoelectric measurements including resistivity and chargeability. The analysis and interpretation of the field and laboratory magnetic and geoelectric maps demonstrated that the studied black-sand beach deposits of Koam Mashaal area can be subdivided according to their geophysical response into three main zones striking nearly parallel to the shoreline of the Mediterranean Sea. The deep-seated magnetic response was interpreted at an average depth of 239.6 m. Meanwhile, the near-surface magnetic responses were interpreted at average depths of 9.1, 57.9 and 81.8 m, respectively.