A Study of Stream Sediments from Soltan Meydan Basaltic Formation Area, Northern Iran

Mehdi Hashemi Gahruei, Majid Gholami and Teimoor Nazari Dehkordi

International Journal of Geography and Geology, 2013, vol. 2, issue 2, 14-23

Abstract: Stream sediments of the Eastern Alborz Mountain located at Northern Iran, were studied at Silurian-formed Soltan Meydan Basaltic Formation area. The area which is mainly consisted of basalt, andesite and tuff represents a structurally active zone, with Mountain Front Sinuosity index (Smf) of 1.2, caused development of numerous faults, prominently with NE-SW trend. Assessment of potential for metallic mineral deposits in the area was carried out using stream sediment sampling and remote sensing. Total metal concentration in the AAS-analyzed sediments varies in the range of Cu: 33-106.54 ppm, Pb: 14.46-189.04 ppm, Zn: 40.88-376 ppm, Ni: 15.14-73.24 ppm, Co: 8.2-88.64 ppm, Mn: 321.6-1326.4 ppm, and Fe: 2.28-5.39 wt%. Statistical processing of geochemical data shows two concentrated areas as geochemical anomalies. These areas are matched with those which are presented by Photo-lineament Factor (PF) indicating high density of regional structures and tectonic features. Taking high-concentrated-fractured areas into account, it is suggested that there is a close relationship between structural features and the possibility of mineralization which explains that the stream sediments could have been enriched by streams flowing through well-developed drainage system.

Keywords: Stream sediments; Photo-lineament factor (PF); Geochemical anomaly; Soltan meydan basaltic formation; Iran (search for similar items in EconPapers)
Date: 2013
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